Iodide

Formula: I^-
Molecular weight: 126.90502
IUPAC Standard InChI: InChI=1S/HI/h1H/p-1
IUPAC Standard InChIKey: XMBWDFGMSWQBCA-UHFFFAOYSA-M
CAS Registry Number: 20461-54-5
Chemical structure:
This structure is also available as a 2d Mol file
Other names: Iodized Oil; Iodine anion
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Other data available:
- Reaction thermochemistry data: reactions 1 to 50, reactions 51 to 100, reactions 101 to 150
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Gas phase thermochemistry data

Go To: Top, Gas phase ion energetics data, Ion clustering data, References, Notes

Quantity	Value	Units	Method	Reference	Comment
S°_{gas,1 bar}	169.26	J/mol*K	Review	Chase, 1998	Data last reviewed in June, 1982

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Ion clustering data, References, Notes

Data compiled by: John E. Bartmess

Protonation reactions

Iodide + =

By formula: I^- + H⁺ = HI

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	1315.24 ± 0.084	kJ/mol	D-EA	Pelaez, Blondel, et al., 2009	gas phase; Given: 3.0590463(38) eV
Δ_rH°	1312.1	kJ/mol	N/A	Check, Faust, et al., 2001	gas phase; Fe(CO)2-(q); ; ΔS(EA)=5.0
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1294.03 ± 0.25	kJ/mol	H-TS	Pelaez, Blondel, et al., 2009	gas phase; Given: 3.0590463(38) eV
Δ_rG°	1290.8	kJ/mol	N/A	Check, Faust, et al., 2001	gas phase; Fe(CO)2-(q); ; ΔS(EA)=5.0

Ion clustering data

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References, Notes

Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

Iodide = BrI₂^-

By formula: I^- = BrI₂^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	141.8 ± 0.96	kJ/mol	PDis	Crider, Harrison, et al., 2011	gas phase; B
Δ_rH°	149.4	kJ/mol	N/A	Check, Faust, et al., 2001	gas phase; FeF2-(q); ; ΔS(EA)=4.5; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	107.9	kJ/mol	N/A	Check, Faust, et al., 2001	gas phase; FeF2-(q); ; ΔS(EA)=4.5; B

Iodide = CH₃ClI^-

By formula: I^- = CH₃ClI^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	33.8 ± 0.96	kJ/mol	N/A	Van Duzor, Wei, et al., 2010	gas phase; B

Iodide = C₆H₅INO₂^-

By formula: I^- = C₆H₅INO₂^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	46.4 ± 8.4	kJ/mol	N/A	Piani, Becucci, et al., 2008	gas phase; Stated electron affinity is the Vertical Detachment Energy; B

Iodide = HIS^-

By formula: I^- = HIS^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	76.15	kJ/mol	N/A	Check, Faust, et al., 2001	gas phase; H-; ; ΔS(acid)=20.9; ΔS(EA)=6.4; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	56.07	kJ/mol	N/A	Check, Faust, et al., 2001	gas phase; H-; ; ΔS(acid)=20.9; ΔS(EA)=6.4; B

Iodide = IRb^-

By formula: I^- = IRb^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	95.0 ± 4.2	kJ/mol	Ther	Miller, Leopold, et al., 1986	gas phase; Extrapolated by polarizability and radius from experimental data.; B

Iodide + = ( Iodide • )

By formula: I^- + Ar = (I^- • Ar)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	2.5	kJ/mol	Ther	Zhao, Yourshaw, et al., 1994	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + CHCl₃ = (I^- • CHCl₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	59.0 ± 4.2	kJ/mol	TDAs	Caldwell, Masucci, et al., 1989	gas phase; B,M

Iodide + = ( Iodide • )

By formula: I^- + CHF₃ = (I^- • CHF₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	54.0 ± 4.2	kJ/mol	TDAs	Caldwell, Masucci, et al., 1989	gas phase; B,M

Iodide + = ( Iodide • )

By formula: I^- + CHN = (I^- • CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	70.3 ± 4.2	kJ/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	88.7	J/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	43.5 ± 6.7	kJ/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

( Iodide • ) + = ( Iodide • 2)

By formula: (I^- • CHN) + CHN = (I^- • 2CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	55.2 ± 4.2	kJ/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	83.7	J/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	30.1	kJ/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

( Iodide • 2) + = ( Iodide • 3)

By formula: (I^- • 2CHN) + CHN = (I^- • 3CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	46.9 ± 4.2	kJ/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	87.9	J/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	20.5	kJ/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

( Iodide • 3) + = ( Iodide • 4)

By formula: (I^- • 3CHN) + CHN = (I^- • 4CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	38. ± 4.2	kJ/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	84.9	J/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	13.4	kJ/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

( Iodide • 4) + = ( Iodide • 5)

By formula: (I^- • 4CHN) + CHN = (I^- • 5CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	36. ± 4.2	kJ/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	95.8	J/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	7.53	kJ/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

( Iodide • 5) + = ( Iodide • 6)

By formula: (I^- • 5CHN) + CHN = (I^- • 6CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	31. ± 4.2	kJ/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	83.3	J/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.28	kJ/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

( Iodide • 6) + = ( Iodide • 7)

By formula: (I^- • 6CHN) + CHN = (I^- • 7CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	31. ± 4.2	kJ/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	83.3	J/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.28	kJ/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

( Iodide • 7) + = ( Iodide • 8)

By formula: (I^- • 7CHN) + CHN = (I^- • 8CHN)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	28. ± 4.2	kJ/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	88.7	J/mol*K	PHPMS	Meot-ner, Cybulski, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	2.1	kJ/mol	TDAs	Meot-ner, Cybulski, et al., 1988	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + CH₂O₂ = (I^- • CH₂O₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	79.1 ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B,M
Δ_rH°	54.0 ± 8.8	kJ/mol	CIDT	Walker and Sunderlin, 1999	gas phase; Authors suggest real value somewhere between this and Caldwell and Kebarle, 1984; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	86.6	J/mol*K	PHPMS	Caldwell and Kebarle, 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	53.1 ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + CH₃Br = (I^- • CH₃Br)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	34.7 ± 0.84	kJ/mol	N/A	Van Duzor, Wei, et al., 2010	gas phase; B
Δ_rH°	34.7 ± 2.1	kJ/mol	PDis	Cyr, Bishea, et al., 1992	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + CH₃I = (I^- • CH₃I)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	35.7 ± 0.84	kJ/mol	N/A	Van Duzor, Wei, et al., 2010	gas phase; B
Δ_rH°	32.6 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujita, et al., 1905	gas phase; B
Δ_rH°	35.1 ± 2.1	kJ/mol	N/A	Arnold, Neumark, et al., 1995	gas phase; ZEKE data, shift relative to bare I-; B
Δ_rH°	34.7 ± 2.1	kJ/mol	PDis	Cyr, Bishea, et al., 1992	gas phase; B
Δ_rH°	38. ± 8.4	kJ/mol	TDAs	Dougherty and Roberts, 1974	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	68.6	J/mol*K	HPMS	Dougherty and Roberts, 1974	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	11.4 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujita, et al., 1905	gas phase; B
Δ_rG°	17.2 ± 1.3	kJ/mol	TDAs	Dougherty and Roberts, 1974	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + CH₃NO₂ = (I^- • CH₃NO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	51.0 ± 4.2	kJ/mol	TDAs	Caldwell, Masucci, et al., 1989	gas phase; B,M

Iodide + = ( Iodide • )

By formula: I^- + CH₄O = (I^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	49.79 ± 0.84	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	47.3 ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B,M
Δ_rH°	46.9	kJ/mol	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Δ_rH°	46.	kJ/mol	PHPMS	Caldwell, Masucci, et al., 1989	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	71.5	J/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Δ_rS°	74.5	J/mol*K	PHPMS	Caldwell and Kebarle, 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	24.1	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	25. ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B
Δ_rG°	24. ± 8.4	kJ/mol	IMRE	Tanabe, Morgon, et al., 1996	gas phase; Anchored to H2O..I- of Caldwell and Kebarle, 1984; B

( Iodide • ) + = ( Iodide • 2)

By formula: (I^- • CH₄O) + CH₄O = (I^- • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	39.7 ± 0.84	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	46.4 ± 4.2	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	94.6	J/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	17.8	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	18. ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( Iodide • 2) + = ( Iodide • 3)

By formula: (I^- • 2CH₄O) + CH₄O = (I^- • 3CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	32.2 ± 2.5	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	41. ± 4.2	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	93.7	J/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	14.3	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	13. ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( Iodide • 3) + = ( Iodide • 4)

By formula: (I^- • 3CH₄O) + CH₄O = (I^- • 4CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	41. ± 4.2	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	104.	J/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	9.6 ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( Iodide • 4) + = ( Iodide • 5)

By formula: (I^- • 4CH₄O) + CH₄O = (I^- • 5CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	40. ± 4.2	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	113.	J/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.3 ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( Iodide • 5) + = ( Iodide • 6)

By formula: (I^- • 5CH₄O) + CH₄O = (I^- • 6CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	40. ± 4.2	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	115.	J/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.9 ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( Iodide • 6) + = ( Iodide • 7)

By formula: (I^- • 6CH₄O) + CH₄O = (I^- • 7CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	39. ± 4.2	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	117.	J/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.6 ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( Iodide • 7) + = ( Iodide • 8)

By formula: (I^- • 7CH₄O) + CH₄O = (I^- • 8CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	38. ± 4.2	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; Entropy estimated.; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	120.	J/mol*K	N/A	Hiraoka and Yamabe, 1991	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3. ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; Entropy estimated.; B

Iodide + = CH₄I^-

By formula: I^- + CH₄ = CH₄I^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10.9	kJ/mol	N/A	Hiraoka, Mizuno, et al., 2001	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-11.6	kJ/mol	TDAs	Hiraoka, Mizuno, et al., 2001	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + CO₂ = (I^- • CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15. ± 7.5	kJ/mol	N/A	Piani, Becucci, et al., 2008	gas phase; Stated electron affinity is the Vertical Detachment Energy; B
Δ_rH°	17. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B
Δ_rH°	20. ± 8.4	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1987	gas phase; B,M
Δ_rH°	13.4	kJ/mol	N/A	Gomez, Taylor, et al., 2002	gas phase; EA=Vertical Detachment Energy. Affinity is stepwise difference in EAs.; B
Δ_rH°	23.4 ± 0.42	kJ/mol	TDAs	Keesee, Lee, et al., 1980	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	56.1	J/mol*K	PHPMS	Hiraoka, Mizuse, et al., 1987	gas phase; M
Δ_rS°	76.1	J/mol*K	HPMS	Keesee, Lee, et al., 1980	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3. ± 8.4	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1987	gas phase; B
Δ_rG°	3.3 ± 0.42	kJ/mol	TDAs	Banic and Iribarne, 1985	gas phase; B,M
Δ_rG°	1.7 ± 0.42	kJ/mol	TDAs	Keesee, Lee, et al., 1980	gas phase; B

( Iodide • ) + = ( Iodide • 2)

By formula: (I^- • CO₂) + CO₂ = (I^- • 2CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B
Δ_rH°	20. ± 4.2	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1987	gas phase; B,M
Δ_rH°	10.9	kJ/mol	N/A	Gomez, Taylor, et al., 2002	gas phase; EA=Vertical Detachment Energy. Affinity is stepwise difference in EAs.; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	72.4	J/mol*K	PHPMS	Hiraoka, Mizuse, et al., 1987	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	3. ± 8.4	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1987	gas phase; B

( Iodide • 2) + = ( Iodide • 3)

By formula: (I^- • 2CO₂) + CO₂ = (I^- • 3CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.20	kJ/mol	N/A	Gomez, Taylor, et al., 2002	gas phase; EA=Vertical Detachment Energy. Affinity is stepwise difference in EAs.; B
Δ_rH°	15. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B
Δ_rH°	19. ± 4.2	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	77.0	J/mol*K	PHPMS	Hiraoka, Mizuse, et al., 1987	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-3. ± 8.4	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1987	gas phase; B

( Iodide • 3) + = ( Iodide • 4)

By formula: (I^- • 3CO₂) + CO₂ = (I^- • 4CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.53	kJ/mol	N/A	Gomez, Taylor, et al., 2002	gas phase; EA=Vertical Detachment Energy. Affinity is stepwise difference in EAs.; B
Δ_rH°	15. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B
Δ_rH°	19. ± 4.2	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1987	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-4.2 ± 8.4	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1987	gas phase; B

( Iodide • 4) + = ( Iodide • 5)

By formula: (I^- • 4CO₂) + CO₂ = (I^- • 5CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.11	kJ/mol	N/A	Gomez, Taylor, et al., 2002	gas phase; EA=Vertical Detachment Energy. Affinity is stepwise difference in EAs.; B
Δ_rH°	13. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B
Δ_rH°	18. ± 4.2	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	79.5	J/mol*K	PHPMS	Hiraoka, Mizuse, et al., 1987	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-5.9 ± 8.4	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1987	gas phase; B

( Iodide • 5) + = ( Iodide • 6)

By formula: (I^- • 5CO₂) + CO₂ = (I^- • 6CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B
Δ_rH°	7.53	kJ/mol	N/A	Gomez, Taylor, et al., 2002	gas phase; EA=Vertical Detachment Energy. Affinity is stepwise difference in EAs.; B
Δ_rH°	18.	kJ/mol	PHPMS	Hiraoka, Mizuse, et al., 1987	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	79.	J/mol*K	N/A	Hiraoka, Mizuse, et al., 1987	gas phase; Entropy change calculated or estimated; M

( Iodide • 6) + = ( Iodide • 7)

By formula: (I^- • 6CO₂) + CO₂ = (I^- • 7CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	14. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B
Δ_rH°	7.95	kJ/mol	N/A	Gomez, Taylor, et al., 2002	gas phase; EA=Vertical Detachment Energy. Affinity is stepwise difference in EAs.; B

( Iodide • 7) + = ( Iodide • 8)

By formula: (I^- • 7CO₂) + CO₂ = (I^- • 8CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B
Δ_rH°	7.95	kJ/mol	N/A	Gomez, Taylor, et al., 2002	gas phase; EA=Vertical Detachment Energy. Affinity is stepwise difference in EAs.; B

( Iodide • 8) + = ( Iodide • 9)

By formula: (I^- • 8CO₂) + CO₂ = (I^- • 9CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( Iodide • 9) + = ( Iodide • 10)

By formula: (I^- • 9CO₂) + CO₂ = (I^- • 10CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( Iodide • 10) + = ( Iodide • 11)

By formula: (I^- • 10CO₂) + CO₂ = (I^- • 11CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.2 ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( Iodide • 11) + = ( Iodide • 12)

By formula: (I^- • 11CO₂) + CO₂ = (I^- • 12CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	6.7 ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( Iodide • 12) + = ( Iodide • 13)

By formula: (I^- • 12CO₂) + CO₂ = (I^- • 13CO₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.6 ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

Iodide + = ( Iodide • )

By formula: I^- + CS₂ = (I^- • CS₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	31.0 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1993	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	69.9	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	10. ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1993	gas phase; B

( Iodide • ) + = ( Iodide • 2)

By formula: (I^- • CS₂) + CS₂ = (I^- • 2CS₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	28.5 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1993	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	90.8	J/mol*K	PHPMS	Hiraoka, Fujimaki, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	0.8 ± 4.2	kJ/mol	TDAs	Hiraoka, Fujimaki, et al., 1993	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + C₂H₃F₃O = (I^- • C₂H₃F₃O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	84.1 ± 4.2	kJ/mol	TDAs	Caldwell, Masucci, et al., 1989	gas phase; B,M

Iodide + = ( Iodide • )

By formula: I^- + C₂H₃N = (I^- • C₂H₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	49.8 ± 8.4	kJ/mol	TDAs	Yamdagni and Kebarle, 1972	gas phase; B,M
Δ_rH°	46.4 ± 1.7	kJ/mol	N/A	Markovich, Perera, et al., 1996	gas phase; B
Δ_rH°	46.4 ± 4.6	kJ/mol	LPES	Dessent, Bailey, et al., 1995	gas phase; B
Δ_rH°	46.02 ± 0.84	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; B,M
Δ_rH°	50.	kJ/mol	PHPMS	Caldwell, Masucci, et al., 1989	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	57.7	J/mol*K	PHPMS	Hiraoka, Mizuse, et al., 1988	gas phase; M
Δ_rS°	76.1	J/mol*K	PHPMS	Yamdagni and Kebarle, 1972	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	27. ± 8.4	kJ/mol	TDAs	Yamdagni and Kebarle, 1972	gas phase; B
Δ_rG°	28. ± 8.4	kJ/mol	IMRE	Tanabe, Morgon, et al., 1996	gas phase; Anchored to H2O..I- of Caldwell and Kebarle, 1984; B
Δ_rG°	28.9 ± 2.1	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; B

( Iodide • ) + = ( Iodide • 2)

By formula: (I^- • C₂H₃N) + C₂H₃N = (I^- • 2C₂H₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	43.51 ± 0.84	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; B,M
Δ_rH°	46.4 ± 2.9	kJ/mol	N/A	Markovich, Perera, et al., 1996	gas phase; B
Δ_rH°	46.4 ± 1.7	kJ/mol	N/A	Dessent, Bailey, et al., 1995	gas phase; Vertical Detachment Energy: 2.25±0.08 eV.; B
Δ_rH°	43.93	kJ/mol	TDAs	Yamdagni and Kebarle, 1972	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	77.0	J/mol*K	PHPMS	Hiraoka, Mizuse, et al., 1988	gas phase; M
Δ_rS°	87.0	J/mol*K	PHPMS	Yamdagni and Kebarle, 1972	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	20.5 ± 3.3	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; B
Δ_rG°	18.0	kJ/mol	TDAs	Yamdagni and Kebarle, 1972	gas phase; B

( Iodide • 2) + = ( Iodide • 3)

By formula: (I^- • 2C₂H₃N) + C₂H₃N = (I^- • 3C₂H₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	38.5 ± 0.84	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; B,M
Δ_rH°	40.6 ± 2.9	kJ/mol	N/A	Markovich, Perera, et al., 1996	gas phase; B
Δ_rH°	38.9	kJ/mol	TDAs	Yamdagni and Kebarle, 1972	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	83.3	J/mol*K	PHPMS	Hiraoka, Mizuse, et al., 1988	gas phase; M
Δ_rS°	92.5	J/mol*K	PHPMS	Yamdagni and Kebarle, 1972	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	13.4 ± 3.3	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; B
Δ_rG°	11.3	kJ/mol	TDAs	Yamdagni and Kebarle, 1972	gas phase; B

( Iodide • 3) + = ( Iodide • 4)

By formula: (I^- • 3C₂H₃N) + C₂H₃N = (I^- • 4C₂H₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	32.6 ± 0.42	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; B,M
Δ_rH°	31.0 ± 3.3	kJ/mol	N/A	Markovich, Perera, et al., 1996	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	80.8	J/mol*K	PHPMS	Hiraoka, Mizuse, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	8.4 ± 1.7	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; B

( Iodide • 4) + = ( Iodide • 5)

By formula: (I^- • 4C₂H₃N) + C₂H₃N = (I^- • 5C₂H₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	29.7 ± 1.3	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; B,M
Δ_rH°	44.4 ± 3.8	kJ/mol	N/A	Markovich, Perera, et al., 1996	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	79.1	J/mol*K	PHPMS	Hiraoka, Mizuse, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.9 ± 5.9	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; B

( Iodide • 5) + = ( Iodide • 6)

By formula: (I^- • 5C₂H₃N) + C₂H₃N = (I^- • 6C₂H₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-10. ± 4.2	kJ/mol	N/A	Markovich, Perera, et al., 1996	gas phase; B

( Iodide • 6) + = ( Iodide • 7)

By formula: (I^- • 6C₂H₃N) + C₂H₃N = (I^- • 7C₂H₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	15. ± 4.6	kJ/mol	N/A	Markovich, Perera, et al., 1996	gas phase; B

( Iodide • 7) + = ( Iodide • 8)

By formula: (I^- • 7C₂H₃N) + C₂H₃N = (I^- • 8C₂H₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	13. ± 5.0	kJ/mol	N/A	Markovich, Perera, et al., 1996	gas phase; B

( Iodide • 8) + = ( Iodide • 9)

By formula: (I^- • 8C₂H₃N) + C₂H₃N = (I^- • 9C₂H₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10. ± 5.9	kJ/mol	N/A	Markovich, Perera, et al., 1996	gas phase; B

( Iodide • 9) + = ( Iodide • 10)

By formula: (I^- • 9C₂H₃N) + C₂H₃N = (I^- • 10C₂H₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10. ± 6.3	kJ/mol	N/A	Markovich, Perera, et al., 1996	gas phase; B

( Iodide • 10) + = ( Iodide • 11)

By formula: (I^- • 10C₂H₃N) + C₂H₃N = (I^- • 11C₂H₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.8 ± 6.7	kJ/mol	N/A	Markovich, Perera, et al., 1996	gas phase; B

( Iodide • 11) + = ( Iodide • 12)

By formula: (I^- • 11C₂H₃N) + C₂H₃N = (I^- • 12C₂H₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.8 ± 7.1	kJ/mol	N/A	Markovich, Perera, et al., 1996	gas phase; B

( Iodide • 13) + = ( Iodide • 14)

By formula: (I^- • 13C₂H₃N) + C₂H₃N = (I^- • 14C₂H₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	-4. ± 7.9	kJ/mol	N/A	Markovich, Perera, et al., 1996	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + C₂H₄F₃N = (I^- • C₂H₄F₃N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	59.0 ± 4.2	kJ/mol	TDAs	Caldwell, Masucci, et al., 1989	gas phase; B,M

Iodide + = ( Iodide • )

By formula: I^- + C₂H₄O₂ = (I^- • C₂H₄O₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	70.7 ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	89.1	J/mol*K	PHPMS	Caldwell and Kebarle, 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	43.9 ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + C₂H₆OS = (I^- • C₂H₆OS)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	65.69	kJ/mol	TDAs	Magnera, Caldwell, et al., 1984	gas phase; B,M
Δ_rH°	67.	kJ/mol	PHPMS	Caldwell, Masucci, et al., 1989	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	90.8	J/mol*K	PHPMS	Magnera, Caldwell, et al., 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	38.5	kJ/mol	TDAs	Magnera, Caldwell, et al., 1984	gas phase; B

( Iodide • ) + = ( Iodide • 2)

By formula: (I^- • C₂H₆OS) + C₂H₆OS = (I^- • 2C₂H₆OS)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	53.6	kJ/mol	PHPMS	Magnera, Caldwell, et al., 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	92.0	J/mol*K	PHPMS	Magnera, Caldwell, et al., 1984	gas phase; M

( Iodide • 2) + = ( Iodide • 3)

By formula: (I^- • 2C₂H₆OS) + C₂H₆OS = (I^- • 3C₂H₆OS)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	48.5	kJ/mol	PHPMS	Magnera, Caldwell, et al., 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	105.	J/mol*K	PHPMS	Magnera, Caldwell, et al., 1984	gas phase; M

Iodide + = ( Iodide • )

By formula: I^- + C₂H₆O = (I^- • C₂H₆O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	54.39 ± 0.84	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	50.6 ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	79.1	J/mol*K	PHPMS	Caldwell and Kebarle, 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	25.6	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	27. ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B
Δ_rG°	25. ± 8.4	kJ/mol	IMRE	Tanabe, Morgon, et al., 1996	gas phase; Anchored to H2O..I- of Caldwell and Kebarle, 1984; B

Iodide + 2 = C₄H₁₂IO₂^-

By formula: I^- + 2C₂H₆O = C₄H₁₂IO₂^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	43.93 ± 0.84	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	18.5	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B

Iodide + 3 = C₆H₁₈IO₃^-

By formula: I^- + 3C₂H₆O = C₆H₁₈IO₃^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	35.1 ± 2.1	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	14.7	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B

Iodide + = C₃F₆I^-

By formula: I^- + C₃F₆ = C₃F₆I^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	36.0 ± 1.3	kJ/mol	TDAs	Hiraoka, Takao, et al., 2002	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.0 ± 1.3	kJ/mol	TDAs	Hiraoka, Takao, et al., 2002	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + C₃H₂F₆O = (I^- • C₃H₂F₆O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	100. ± 4.2	kJ/mol	TDAs	Caldwell, Masucci, et al., 1989	gas phase; B,M

Iodide + = ( Iodide • )

By formula: I^- + C₃H₂N₂ = (I^- • C₃H₂N₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	79.1 ± 4.2	kJ/mol	TDAs	Caldwell, Masucci, et al., 1989	gas phase; B,M

Iodide + = ( Iodide • )

By formula: I^- + C₃H₆O = (I^- • C₃H₆O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	50.2 ± 4.2	kJ/mol	TDAs	Caldwell, Masucci, et al., 1989	gas phase; B,M

Iodide + = ( Iodide • )

By formula: I^- + C₃H₆O₂ = (I^- • C₃H₆O₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	69.5 ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	43.9 ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + C₃H₆O₂ = (I^- • C₃H₆O₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	69.5	kJ/mol	PHPMS	Caldwell and Kebarle, 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	85.4	J/mol*K	PHPMS	Caldwell and Kebarle, 1984	gas phase; M

Iodide + = ( Iodide • )

By formula: I^- + C₃H₈O = (I^- • C₃H₈O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	54.81 ± 0.84	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	51.0 ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	79.9	J/mol*K	PHPMS	Caldwell and Kebarle, 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	26.5	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	27. ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B

Iodide + 2 = C₆H₁₆IO₂^-

By formula: I^- + 2C₃H₈O = C₆H₁₆IO₂^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	46.0 ± 1.3	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	19.5	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B

Iodide + 3 = C₉H₂₄IO₃^-

By formula: I^- + 3C₃H₈O = C₉H₂₄IO₃^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	39.7 ± 2.9	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	14.8	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + C₄HF₉O = (I^- • C₄HF₉O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	97.1 ± 4.2	kJ/mol	TDAs	Caldwell, Masucci, et al., 1989	gas phase; B,M

Iodide + = ( Iodide • )

By formula: I^- + C₄H₈O₂ = (I^- • C₄H₈O₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	69.9 ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	85.8	J/mol*K	PHPMS	Caldwell and Kebarle, 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	44.4 ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + C₄H₁₀O = (I^- • C₄H₁₀O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	54.8 ± 1.3	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	50.6 ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	78.2	J/mol*K	PHPMS	Caldwell and Kebarle, 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	25.7	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	27. ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B

Iodide + 2 = C₈H₂₀IO₂^-

By formula: I^- + 2C₄H₁₀O = C₈H₂₀IO₂^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	47.3 ± 1.7	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	18.1	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B

Iodide + = C₅F₈I^-

By formula: I^- + C₅F₈ = C₅F₈I^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	41.84 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujita, et al., 1905	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	16.9 ± 0.84	kJ/mol	TDAs	Hiraoka, Fujita, et al., 1905	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + C₅H₈O₂ = (I^- • C₅H₈O₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	63.2 ± 4.2	kJ/mol	TDAs	Caldwell, Masucci, et al., 1989	gas phase; B,M

Iodide + = ( Iodide • )

By formula: I^- + C₅H₁₀O₂ = (I^- • C₅H₁₀O₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	64.4 ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	90.8	J/mol*K	PHPMS	Caldwell and Kebarle, 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	37. ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + C₆F₆ = (I^- • C₆F₆)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	46.0 ± 4.2	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1987, 2	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	72.4	J/mol*K	PHPMS	Hiraoka, Mizuse, et al., 1987, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	24. ± 6.7	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1987, 2	gas phase; B

( Iodide • ) + = ( Iodide • 2)

By formula: (I^- • C₆F₆) + C₆F₆ = (I^- • 2C₆F₆)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	43.5	kJ/mol	PHPMS	Hiraoka, Mizuse, et al., 1987, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	90.4	J/mol*K	PHPMS	Hiraoka, Mizuse, et al., 1987, 2	gas phase; M

Iodide + = ( Iodide • )

By formula: I^- + C₆H₅ClO = (I^- • C₆H₅ClO)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	85.8 ± 7.5	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	88.	J/mol*K	N/A	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	48.5 ± 4.2	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
48.5	423.	PHPMS	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M

Iodide + = ( Iodide • )

By formula: I^- + C₆H₅ClO = (I^- • C₆H₅ClO)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	88.3 ± 7.5	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	88.	J/mol*K	N/A	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	51.0 ± 4.2	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
51.0	423.	PHPMS	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M

Iodide + = ( Iodide • )

By formula: I^- + C₆H₅FO = (I^- • C₆H₅FO)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	82.0 ± 7.5	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	88.	J/mol*K	N/A	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	44.8 ± 4.2	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
43.9	423.	PHPMS	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M

Iodide + = ( Iodide • )

By formula: I^- + C₆H₅FO = (I^- • C₆H₅FO)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	81.2 ± 7.5	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	88.	J/mol*K	N/A	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	43.9 ± 4.2	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
44.8	423.	PHPMS	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M

Iodide + = ( Iodide • )

By formula: I^- + C₆H₅NO₃ = (I^- • C₆H₅NO₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	97.1 ± 7.5	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	88.	J/mol*K	N/A	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	59.8 ± 4.2	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
59.8	423.	PHPMS	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M

Iodide + = ( Iodide • )

By formula: I^- + C₆H₆O = (I^- • C₆H₆O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	72.4 ± 7.5	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	88.	J/mol*K	N/A	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	35. ± 4.2	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
35.	423.	PHPMS	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M

Iodide + = ( Iodide • )

By formula: I^- + C₆H₆ = (I^- • C₆H₆)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	26. ± 8.4	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988, 2	gas phase; B,M
Δ_rH°	38. ± 4.2	kJ/mol	TDAs	Caldwell, Masucci, et al., 1989	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	59.4	J/mol*K	PHPMS	Hiraoka, Mizuse, et al., 1988, 2	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	8. ± 11.	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988, 2	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + C₆H₇N = (I^- • C₆H₇N)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	54.0 ± 4.2	kJ/mol	TDAs	Caldwell, Masucci, et al., 1989	gas phase; B,M

Iodide + = ( Iodide • )

By formula: I^- + C₇H₅NO = (I^- • C₇H₅NO)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	99.6 ± 7.5	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	88.	J/mol*K	N/A	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	62.3 ± 4.2	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
62.3	423.	PHPMS	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M

Iodide + = ( Iodide • )

By formula: I^- + C₇H₅NO = (I^- • C₇H₅NO)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	96.2 ± 7.5	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	88.	J/mol*K	N/A	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	59.0 ± 4.2	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
59.0	423.	PHPMS	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M

Iodide + = ( Iodide • )

By formula: I^- + C₇H₈O = (I^- • C₇H₈O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	68.6 ± 7.5	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	88.	J/mol*K	N/A	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	31. ± 4.2	kJ/mol	IMRE	Paul and Kebarle, 1990	gas phase; ΔGaff at 423 K; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
31.	423.	PHPMS	Paul and Kebarle, 1990	gas phase; Entropy change calculated or estimated; M

Iodide + = ( Iodide • )

By formula: I^- + C₇H₈ = (I^- • C₇H₈)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	46.0 ± 4.2	kJ/mol	TDAs	Caldwell, Masucci, et al., 1989	gas phase; B,M

Iodide + CeI₃ = ( Iodide • CeI₃)

By formula: I^- + CeI₃ = (I^- • CeI₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	280. ± 33.	kJ/mol	TDEq	Chantry, 1976	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	120.	J/mol*K	MS	Chantry, 1976	gas phase; heated collision chamber; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	250. ± 42.	kJ/mol	TDEq	Chantry, 1976	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + CsI = (I^- • CsI)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	141.00 ± 0.21	kJ/mol	N/A	Wang, Wang, et al., 2010	gas phase; B
Δ_rH°	151. ± 5.4	kJ/mol	N/A	Gusarov, Gorokhov, et al., 1979	gas phase; value altered from reference due to conversion from electron convention to ion convention; B

Iodide + CsI₂ = ( Iodide • CsI₂)

By formula: I^- + CsI₂ = (I^- • CsI₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	115. ± 13.	kJ/mol	N/A	Gusarov, Gorokhov, et al., 1979	gas phase; value altered from reference due to conversion from electron convention to ion convention; B

Iodide + DyI₃ = ( Iodide • DyI₃)

By formula: I^- + DyI₃ = (I^- • DyI₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	279. ± 8.4	kJ/mol	TDAs	Lelik, Korobov, et al., 1984	gas phase; anion heat reworked from reference due to better dHf(DyI3); value altered from reference due to conversion from electron convention to ion convention; B

Iodide + = ( Iodide • )

By formula: I^- + HBr = (I^- • HBr)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	67.4 ± 8.4	kJ/mol	TDEq	Caldwell and Kebarle, 1985	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	82.0	J/mol*K	PHPMS	Caldwell and Kebarle, 1985	gas phase; switching reaction(I-)SO2; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	43. ± 11.	kJ/mol	TDEq	Caldwell and Kebarle, 1985	gas phase; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
42.7	300.	PHPMS	Caldwell and Kebarle, 1985	gas phase; switching reaction(I-)SO2; M

Iodide + = ( Iodide • )

By formula: I^- + HCl = (I^- • HCl)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	61.9 ± 8.4	kJ/mol	TDAs	Caldwell and Kebarle, 1985	gas phase; B,M
Δ_rH°	59.4	kJ/mol	HPMS	Keesee, Lee, et al., 1980	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	83.7	J/mol*K	PHPMS	Caldwell and Kebarle, 1985	gas phase; M
Δ_rS°	95.0	J/mol*K	HPMS	Keesee, Lee, et al., 1980	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	37. ± 11.	kJ/mol	TDAs	Caldwell and Kebarle, 1985	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + HF = (I^- • HF)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	62.8 ± 8.4	kJ/mol	Est	Larson and McMahon, 1984	gas phase; Extrapolated from other bihalide data; B
Δ_rH°	63.	kJ/mol	PHPMS	Caldwell, Masucci, et al., 1989	gas phase; M

Iodide + = ( Iodide • )

By formula: I^- + HI = (I^- • HI)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	71.1 ± 8.4	kJ/mol	TDEq	Caldwell and Kebarle, 1985	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	102.	J/mol*K	PHPMS	Caldwell and Kebarle, 1985	gas phase; switching reaction(I-)SO2; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	41. ± 11.	kJ/mol	TDEq	Caldwell and Kebarle, 1985	gas phase; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
41.	300.	PHPMS	Caldwell and Kebarle, 1985	gas phase; switching reaction(I-)SO2; M

Iodide + = ( Iodide • )

By formula: I^- + H₂O = (I^- • H₂O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	43. ± 3.	kJ/mol	AVG	N/A	Average of 6 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	64.0	J/mol*K	PHPMS	Hiraoka, Mizuse, et al., 1988	gas phase; M
Δ_rS°	80.8	J/mol*K	HPMS	Keesee and Castleman, 1980	gas phase; M
Δ_rS°	68.2	J/mol*K	HPMS	Arshadi, Yamdagni, et al., 1970	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	23. ± 1.	kJ/mol	AVG	N/A	Average of 6 values; Individual data points

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
22.	300.	HPMS	Banic and Iribarne, 1985	gas phase; electric fields; M

( Iodide • ) + = ( Iodide • 2)

By formula: (I^- • H₂O) + H₂O = (I^- • 2H₂O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	41.4 ± 0.84	kJ/mol	TDAs	Keesee and Castleman, 1980	gas phase; B,M
Δ_rH°	39.7	kJ/mol	N/A	Markovich, Pollack, et al., 1994	gas phase; For photodissociation plus electron loss. Affinity is difference from lower solvated ion.; B
Δ_rH°	39.7 ± 0.84	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; B,M
Δ_rH°	41. ± 4.2	kJ/mol	TDAs	Payzant, Yamdagni, et al., 1971	gas phase; B
Δ_rH°	41. ± 4.2	kJ/mol	TDAs	Arshadi, Yamdagni, et al., 1970	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	73.6	J/mol*K	PHPMS	Hiraoka, Mizuse, et al., 1988	gas phase; M
Δ_rS°	84.9	J/mol*K	HPMS	Keesee and Castleman, 1980	gas phase; M
Δ_rS°	79.5	J/mol*K	HPMS	Arshadi, Yamdagni, et al., 1970	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	17. ± 2.	kJ/mol	AVG	N/A	Average of 6 values; Individual data points

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
17.	300.	HPMS	Banic and Iribarne, 1985	gas phase; electric fields; M

( Iodide • 2) + = ( Iodide • 3)

By formula: (I^- • 2H₂O) + H₂O = (I^- • 3H₂O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	38.9 ± 1.3	kJ/mol	TDAs	Keesee and Castleman, 1980	gas phase; B,M
Δ_rH°	36. ± 9.6	kJ/mol	N/A	Markovich, Pollack, et al., 1994	gas phase; For photodissociation plus electron loss. Affinity is difference from lower solvated ion.; B
Δ_rH°	38.5 ± 0.84	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; B,M
Δ_rH°	39. ± 4.2	kJ/mol	TDAs	Payzant, Yamdagni, et al., 1971	gas phase; B
Δ_rH°	39. ± 4.2	kJ/mol	TDAs	Arshadi, Yamdagni, et al., 1970	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	85.4	J/mol*K	PHPMS	Hiraoka, Mizuse, et al., 1988	gas phase; M
Δ_rS°	87.9	J/mol*K	HPMS	Keesee and Castleman, 1980	gas phase; M
Δ_rS°	89.1	J/mol*K	HPMS	Arshadi, Yamdagni, et al., 1970	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	12.6	kJ/mol	TDAs	Keesee and Castleman, 1980	gas phase; B
Δ_rG°	13.0 ± 3.3	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; B
Δ_rG°	14. ± 8.4	kJ/mol	TDAs	Kebarle, Arshadi, et al., 1968	gas phase; B,M

( Iodide • 3) + = ( Iodide • 4)

By formula: (I^- • 3H₂O) + H₂O = (I^- • 4H₂O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	38.5 ± 1.7	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; B,M
Δ_rH°	29. ± 9.6	kJ/mol	N/A	Markovich, Pollack, et al., 1994	gas phase; For photodissociation plus electron loss. Affinity is difference from lower solvated ion.; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	98.7	J/mol*K	PHPMS	Hiraoka, Mizuse, et al., 1988	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	8.8 ± 6.7	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; B
Δ_rG°	9.2 ± 8.4	kJ/mol	TDAs	Kebarle, Arshadi, et al., 1968	gas phase; B,M

( Iodide • 4) + = ( Iodide • 5)

By formula: (I^- • 4H₂O) + H₂O = (I^- • 5H₂O)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	37.7	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; Entropy estimated; B,M
Δ_rH°	17.6	kJ/mol	N/A	Markovich, Pollack, et al., 1994	gas phase; For photodissociation plus electron loss. Affinity is difference from lower solvated ion.; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	100.	J/mol*K	N/A	Hiraoka, Mizuse, et al., 1988	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	6.28	kJ/mol	TDAs	Hiraoka, Mizuse, et al., 1988	gas phase; Entropy estimated; B

( Iodide • 5) + = ( Iodide • 6)

By formula: (I^- • 5H₂O) + H₂O = (I^- • 6H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	32.6	kJ/mol	N/A	Markovich, Pollack, et al., 1994	gas phase; For photodissociation plus electron loss. Affinity is difference from lower solvated ion.; B

( Iodide • 6) + = ( Iodide • 7)

By formula: (I^- • 6H₂O) + H₂O = (I^- • 7H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.53	kJ/mol	N/A	Markovich, Pollack, et al., 1994	gas phase; For photodissociation plus electron loss. Affinity is difference from lower solvated ion.; B

( Iodide • 7) + = ( Iodide • 8)

By formula: (I^- • 7H₂O) + H₂O = (I^- • 8H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	2.9	kJ/mol	N/A	Markovich, Pollack, et al., 1994	gas phase; For photodissociation plus electron loss. Affinity is difference from lower solvated ion.; B

( Iodide • 8) + = ( Iodide • 9)

By formula: (I^- • 8H₂O) + H₂O = (I^- • 9H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	16.3	kJ/mol	N/A	Markovich, Pollack, et al., 1994	gas phase; For photodissociation plus electron loss. Affinity is difference from lower solvated ion.; B

( Iodide • 9) + = ( Iodide • 10)

By formula: (I^- • 9H₂O) + H₂O = (I^- • 10H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	5.86	kJ/mol	N/A	Markovich, Pollack, et al., 1994	gas phase; For photodissociation plus electron loss. Affinity is difference from lower solvated ion.; B

( Iodide • 10) + = ( Iodide • 11)

By formula: (I^- • 10H₂O) + H₂O = (I^- • 11H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	2.9	kJ/mol	N/A	Markovich, Pollack, et al., 1994	gas phase; For photodissociation plus electron loss. Affinity is difference from lower solvated ion.; B

( Iodide • 11) + = ( Iodide • 12)

By formula: (I^- • 11H₂O) + H₂O = (I^- • 12H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	5.86	kJ/mol	N/A	Markovich, Pollack, et al., 1994	gas phase; For photodissociation plus electron loss. Affinity is difference from lower solvated ion.; B

( Iodide • 12) + = ( Iodide • 13)

By formula: (I^- • 12H₂O) + H₂O = (I^- • 13H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.53	kJ/mol	N/A	Markovich, Pollack, et al., 1994	gas phase; For photodissociation plus electron loss. Affinity is difference from lower solvated ion.; B

( Iodide • 13) + = ( Iodide • 14)

By formula: (I^- • 13H₂O) + H₂O = (I^- • 14H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	0.84	kJ/mol	N/A	Markovich, Pollack, et al., 1994	gas phase; For photodissociation plus electron loss. Affinity is difference from lower solvated ion.; B

( Iodide • 14) + = ( Iodide • 15)

By formula: (I^- • 14H₂O) + H₂O = (I^- • 15H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	5.02	kJ/mol	N/A	Markovich, Pollack, et al., 1994	gas phase; For photodissociation plus electron loss. Affinity is difference from lower solvated ion.; B

( Iodide • 15) + = ( Iodide • 16)

By formula: (I^- • 15H₂O) + H₂O = (I^- • 16H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	5.02	kJ/mol	N/A	Markovich, Pollack, et al., 1994	gas phase; For photodissociation plus electron loss. Affinity is difference from lower solvated ion.; B

( Iodide • ) + = ( Iodide • • )

By formula: (I^- • H₂O) + O₂S = (I^- • O₂S • H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	37.7 ± 0.42	kJ/mol	TDAs	Banic and Iribarne, 1985	gas phase; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
30.	300.	HPMS	Banic and Iribarne, 1985	gas phase; electric fields; M

Iodide + = ( Iodide • )

By formula: I^- + H₂S = (I^- • H₂S)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	37. ± 4.2	kJ/mol	TDAs	Caldwell, Masucci, et al., 1989	gas phase; B,M

Iodide + = ( Iodide • )

By formula: I^- + H₃N = (I^- • H₃N)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	31.0 ± 1.3	kJ/mol	TDAs	Evans, Keesee, et al., 1987	gas phase; B,M
Δ_rH°	31. ± 4.2	kJ/mol	TDAs	Caldwell, Masucci, et al., 1989	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	87.4	J/mol*K	HPMS	Evans, Keesee, et al., 1987	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.0 ± 2.5	kJ/mol	TDAs	Evans, Keesee, et al., 1987	gas phase; B

Iodide + HoI₃ = ( Iodide • HoI₃)

By formula: I^- + HoI₃ = (I^- • HoI₃)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	288.7	kJ/mol	TDAs	Bencze, Kaposi, et al., 1988	gas phase; Data at 0 K. See also Pramann and Rademann, 1999; value altered from reference due to conversion from electron convention to ion convention; B

Iodide + = ( Iodide • )

By formula: I^- + IK = (I^- • IK)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	163. ± 8.8	kJ/mol	N/A	Burdukovskaya, Kudin, et al., 1984	gas phase; value altered from reference due to conversion from electron convention to ion convention; B

Iodide + = ( Iodide • )

By formula: I^- + I₂ = (I^- • I₂)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	100.	kJ/mol	N/A	Downs and Adams, 1973	gas phase; from Δ_rH(f); M

Iodide + = I₃^-

By formula: I^- + I₂ = I₃^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	136. ± 10.	kJ/mol	N/A	Taylor, Asmis, et al., 1999	gas phase; B
Δ_rH°	126. ± 5.9	kJ/mol	CIDT	Do, Klein, et al., 1997	gas phase; B
Δ_rH°	356.1	kJ/mol	Ther	Finch, Gates, et al., 1977	gas phase; This value is far more bound than expected from other studies; B
Δ_rH°	136.4	kJ/mol	N/A	Check, Faust, et al., 2001	gas phase; FeF3-(t); ; ΔS(EA)=2.8; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	94.14	kJ/mol	N/A	Check, Faust, et al., 2001	gas phase; FeF3-(t); ; ΔS(EA)=2.8; B

Iodide + = I₄P^-

By formula: I^- + I₃P = I₄P^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	54.0 ± 7.9	kJ/mol	CIDT	Heil, Check, et al., 2002	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + Kr = (I^- • Kr)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.18	kJ/mol	Ther	Zhao, Yourshaw, et al., 1994	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + N₂O = (I^- • N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B
Δ_rH°	16. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	59.0	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

( Iodide • ) + = ( Iodide • 2)

By formula: (I^- • N₂O) + N₂O = (I^- • 2N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B
Δ_rH°	14. ± 1.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	59.4	J/mol*K	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; M

( Iodide • 2) + = ( Iodide • 3)

By formula: (I^- • 2N₂O) + N₂O = (I^- • 3N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B
Δ_rH°	13.	kJ/mol	PHPMS	Hiraoka, Aruga, et al., 1993	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	63.	J/mol*K	N/A	Hiraoka, Aruga, et al., 1993	gas phase; Entropy change calculated or estimated; M

( Iodide • 3) + = ( Iodide • 4)

By formula: (I^- • 3N₂O) + N₂O = (I^- • 4N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	12. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( Iodide • 4) + = ( Iodide • 5)

By formula: (I^- • 4N₂O) + N₂O = (I^- • 5N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	11. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( Iodide • 5) + = ( Iodide • 6)

By formula: (I^- • 5N₂O) + N₂O = (I^- • 6N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.6 ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( Iodide • 6) + = ( Iodide • 7)

By formula: (I^- • 6N₂O) + N₂O = (I^- • 7N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	9.2 ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( Iodide • 7) + = ( Iodide • 8)

By formula: (I^- • 7N₂O) + N₂O = (I^- • 8N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	8.8 ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( Iodide • 8) + = ( Iodide • 9)

By formula: (I^- • 8N₂O) + N₂O = (I^- • 9N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	10. ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( Iodide • 9) + = ( Iodide • 10)

By formula: (I^- • 9N₂O) + N₂O = (I^- • 10N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	7.5 ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( Iodide • 10) + = ( Iodide • 11)

By formula: (I^- • 10N₂O) + N₂O = (I^- • 11N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.2 ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( Iodide • 11) + = ( Iodide • 12)

By formula: (I^- • 11N₂O) + N₂O = (I^- • 12N₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	5.4 ± 8.4	kJ/mol	PDis	Arnold, Bradforth, et al., 1995	gas phase; EA given is Vertical Detachment Energy. Affinity: difference between successive EAs in (Y); B

( Iodide • 4294967295) + = Iodide

By formula: (I^- • 4294967295Na) + Na = I^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	82.0 ± 9.6	kJ/mol	N/A	Miller, Leopold, et al., 1986	gas phase; B

Iodide + = ( Iodide • )

By formula: I^- + O₂S = (I^- • O₂S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	59.8 ± 8.4	kJ/mol	TDAs	Caldwell and Kebarle, 1985	gas phase; B,M
Δ_rH°	53.97 ± 0.42	kJ/mol	TDAs	Keesee, Lee, et al., 1980	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	73.6	J/mol*K	PHPMS	Caldwell and Kebarle, 1985	gas phase; M
Δ_rS°	84.5	J/mol*K	HPMS	Keesee, Lee, et al., 1980	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	38. ± 11.	kJ/mol	TDAs	Caldwell and Kebarle, 1985	gas phase; B
Δ_rG°	7.11 ± 0.42	kJ/mol	TDAs	Banic and Iribarne, 1985	gas phase; B
Δ_rG°	28.5 ± 0.84	kJ/mol	TDAs	Keesee, Lee, et al., 1980	gas phase; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
38.	301.	HPMS	Banic and Iribarne, 1985	gas phase; electric fields; M

( Iodide • ) + = ( Iodide • • )

By formula: (I^- • O₂S) + H₂O = (I^- • H₂O • O₂S)

Bond type: Hydrogen bond (negative ion to hydride)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	14.6 ± 0.42	kJ/mol	TDAs	Banic and Iribarne, 1985	gas phase; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
15.	300.	HPMS	Banic and Iribarne, 1985	gas phase; electric fields; M

( Iodide • • ) + = ( Iodide • 2 • )

By formula: (I^- • O₂S • H₂O) + O₂S = (I^- • 2O₂S • H₂O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	29.7 ± 0.42	kJ/mol	TDAs	Banic and Iribarne, 1985	gas phase; B

( Iodide • ) + = ( Iodide • 2)

By formula: (I^- • O₂S) + O₂S = (I^- • 2O₂S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	42.26 ± 0.42	kJ/mol	TDAs	Keesee, Lee, et al., 1980	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	90.4	J/mol*K	HPMS	Keesee, Lee, et al., 1980	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	15.1 ± 1.3	kJ/mol	TDAs	Keesee, Lee, et al., 1980	gas phase; B

( Iodide • 2) + = ( Iodide • 3)

By formula: (I^- • 2O₂S) + O₂S = (I^- • 3O₂S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	38.5 ± 0.84	kJ/mol	TDAs	Keesee, Lee, et al., 1980	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	103.	J/mol*K	HPMS	Keesee, Lee, et al., 1980	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	7.5 ± 2.5	kJ/mol	TDAs	Keesee, Lee, et al., 1980	gas phase; B

Iodide + = IO₃S^-

By formula: I^- + O₃S = IO₃S^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	161. ± 8.8	kJ/mol	CIDT	Hao, Gilbert, et al., 2006	gas phase; B

Iodide + = IXe^-

By formula: I^- + Xe = IXe^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	6.69	kJ/mol	N/A	Lenzer, Furlanetto, et al., 1998	gas phase; B
Δ_rH°	11.7	kJ/mol	TDAs	Wada, Kikkawa, et al., 2007	gas phase; Entropy estimated; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	-8.24	kJ/mol	TDAs	Wada, Kikkawa, et al., 2007	gas phase; Entropy estimated; B

References

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Ion clustering data, Notes

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Notes

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Symbols used in this document:

S°_{gas,1 bar}	Entropy of gas at standard conditions (1 bar)
T	Temperature
Δ_rG°	Free energy of reaction at standard conditions
Δ_rH°	Enthalpy of reaction at standard conditions
Δ_rS°	Entropy of reaction at standard conditions

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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