2-Propanol, 2-methyl-
- Formula: C4H10O
- Molecular weight: 74.1216
- IUPAC Standard InChIKey: DKGAVHZHDRPRBM-UHFFFAOYSA-N
- CAS Registry Number: 75-65-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Isotopologues:
- Other names: tert-Butyl alcohol; tert-Butanol; Ethanol, 1,1-Dimethyl-; Trimethylcarbinol; Trimethylmethanol; 1,1-Dimethylethanol; 2-Methyl-2-propanol; tert-C4H9OH; t-Butanol; tert-Butyl hydroxide; 2-Methylpropanol-2; 2-Methylpropan-2-ol; Alcool butylique tertiaire; Butanol tertiaire; t-Butyl hydroxide; Methanol, trimethyl-; NCI-C55367; 2-Methyl n-propan-2-ol; Methyl-2 propanol-2; Tert.-butyl alcohol
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Reaction thermochemistry data
Go To: Top, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
By formula: Cl- + C4H10O = (Cl- • C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 19. ± 4. | kcal/mol | AVG | N/A | Average of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 27.4 | cal/mol*K | PHPMS | Hiraoka and Mizuse, 1987 | gas phase; M |
ΔrS° | 24.0 | cal/mol*K | PHPMS | Sieck, 1985 | gas phase; M |
ΔrS° | 23.4 | cal/mol*K | N/A | Larson and McMahon, 1984 | gas phase; Entropy change calculated or estimated; French, Ikuta, et al., 1982; M |
ΔrS° | 27. | cal/mol*K | PHPMS | Kebarle, 1977 | gas phase; M |
ΔrS° | 10.3 | cal/mol*K | N/A | Yamdagni and Kebarle, 1971 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 11.58 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrG° | 12.30 ± 0.30 | kcal/mol | TDAs | Sieck, 1985 | gas phase; B |
ΔrG° | 11.60 | kcal/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B |
ΔrG° | 11.1 ± 2.0 | kcal/mol | IMRE | Larson and McMahon, 1984, 2 | gas phase; B,M |
ΔrG° | 11.1 ± 2.0 | kcal/mol | TDAs | Yamdagni and Kebarle, 1971 | gas phase; B |
C4H9O- + =
By formula: C4H9O- + H+ = C4H10O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 374.7 ± 1.0 | kcal/mol | D-EA | Ramond, Davico, et al., 2000 | gas phase; B |
ΔrH° | 374.6 ± 2.1 | kcal/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
ΔrH° | 376.00 ± 0.70 | kcal/mol | CIDT | DeTuri and Ervin, 1999 | gas phase; B |
ΔrH° | 374.3 ± 2.0 | kcal/mol | CIDC | Haas and Harrison, 1993 | gas phase; Both metastable and 50 eV collision energy.; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 368.1 ± 1.1 | kcal/mol | H-TS | Ramond, Davico, et al., 2000 | gas phase; B |
ΔrG° | 368.0 ± 2.0 | kcal/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
ΔrG° | 367.7 ± 2.1 | kcal/mol | H-TS | Haas and Harrison, 1993 | gas phase; Both metastable and 50 eV collision energy.; B |
By formula: C4H9O- + C4H10O = (C4H9O- • C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 27.9 ± 2.9 | kcal/mol | N/A | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 29.3 | cal/mol*K | N/A | Caldwell, Rozeboom, et al., 1984 | gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 18.8 ± 2.0 | kcal/mol | IMRE | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M |
By formula: F- + C4H10O = (F- • C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 33.40 ± 0.70 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrH° | 33.3 ± 2.0 | kcal/mol | IMRE | Larson and McMahon, 1983 | gas phase; B,M |
ΔrH° | 32.7 ± 2.2 | kcal/mol | CIDT | DeTuri and Ervin, 1999 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 26.1 | cal/mol*K | N/A | Larson and McMahon, 1983 | gas phase; switching reaction(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 26.01 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrG° | 25.5 ± 2.0 | kcal/mol | IMRE | Larson and McMahon, 1983 | gas phase; B,M |
By formula: C3H9Sn+ + C4H10O = (C3H9Sn+ • C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 36.6 | kcal/mol | PHPMS | Stone and Splinter, 1984 | gas phase; switching reaction((CH3)3Sn+)CH3OH, Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 32.4 | cal/mol*K | N/A | Stone and Splinter, 1984 | gas phase; switching reaction((CH3)3Sn+)CH3OH, Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
19.6 | 525. | PHPMS | Stone and Splinter, 1984 | gas phase; switching reaction((CH3)3Sn+)CH3OH, Entropy change calculated or estimated; M |
By formula: C5H11O- + C4H10O = (C5H11O- • C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 27.4 ± 2.9 | kcal/mol | N/A | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 18.7 ± 2.0 | kcal/mol | IMRE | Caldwell, Rozeboom, et al., 1984 | gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B |
By formula: (Cl- • 2C4H10O) + C4H10O = (Cl- • 3C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 15.80 ± 0.30 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrH° | 13.7 ± 1.0 | kcal/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 31.0 | cal/mol*K | PHPMS | Hiraoka and Mizuse, 1987 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 5.07 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrG° | 4.4 ± 1.0 | kcal/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B |
By formula: (Cl- • C4H10O) + C4H10O = (Cl- • 2C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 16.90 ± 0.20 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrH° | 14.9 ± 1.0 | kcal/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 25.8 | cal/mol*K | PHPMS | Hiraoka and Mizuse, 1987 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 7.36 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrG° | 7.2 ± 1.0 | kcal/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B |
By formula: (Cl- • 5C4H10O) + C4H10O = (Cl- • 6C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 11.4 ± 1.0 | kcal/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; Estimated entropy; single temperature measurement; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 32. | cal/mol*K | N/A | Hiraoka and Mizuse, 1987 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1.8 ± 1.0 | kcal/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; Estimated entropy; single temperature measurement; B |
By formula: CH6N+ + C4H10O = (CH6N+ • C4H10O)
Bond type: Hydrogen bonds of the type NH+-O between organics
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 22.9 | kcal/mol | PHPMS | Meot-Ner, 1984 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 26. | cal/mol*K | N/A | Meot-Ner, 1984 | gas phase; Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
10.0 | 495. | PHPMS | Meot-Ner, 1984 | gas phase; Entropy change calculated or estimated; M |
By formula: I- + C4H10O = (I- • C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 13.10 ± 0.30 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrH° | 12.1 ± 1.0 | kcal/mol | TDAs | Caldwell and Kebarle, 1984 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 18.7 | cal/mol*K | PHPMS | Caldwell and Kebarle, 1984 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 6.15 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
ΔrG° | 6.5 ± 1.0 | kcal/mol | TDAs | Caldwell and Kebarle, 1984 | gas phase; B |
By formula: CN- + C4H10O = (CN- • C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 18.1 ± 3.5 | kcal/mol | IMRE | Larson and McMahon, 1987 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 24.8 | cal/mol*K | N/A | Larson and McMahon, 1987 | gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 10.7 ± 2.3 | kcal/mol | IMRE | Larson and McMahon, 1987 | gas phase; B,M |
By formula: (Cl- • 3C4H10O) + C4H10O = (Cl- • 4C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 12.7 ± 1.0 | kcal/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 31.3 | cal/mol*K | PHPMS | Hiraoka and Mizuse, 1987 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 3.3 ± 1.0 | kcal/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B |
By formula: (Cl- • 4C4H10O) + C4H10O = (Cl- • 5C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 11.9 ± 1.0 | kcal/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 32.3 | cal/mol*K | PHPMS | Hiraoka and Mizuse, 1987 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 2.2 ± 1.0 | kcal/mol | TDAs | Hiraoka and Mizuse, 1987 | gas phase; B |
By formula: HS- + C4H10O = (HS- • C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 16.80 ± 0.30 | kcal/mol | TDAs | Sieck and Meot-ner, 1989 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 19.9 | cal/mol*K | PHPMS | Sieck and Meot-ner, 1989 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 10.9 ± 1.2 | kcal/mol | TDAs | Sieck and Meot-ner, 1989 | gas phase; B |
By formula: NO2- + C4H10O = (NO2- • C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 19.60 ± 0.20 | kcal/mol | TDAs | Sieck, 1985 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 29.5 | cal/mol*K | PHPMS | Sieck, 1985 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 10.80 ± 0.30 | kcal/mol | TDAs | Sieck, 1985 | gas phase; B |
By formula: C5H5- + C4H10O = (C5H5- • C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 17.0 ± 1.0 | kcal/mol | TDAs | Meot-ner, 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 32.0 | cal/mol*K | PHPMS | Meot-ner, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 7.4 ± 1.0 | kcal/mol | TDAs | Meot-ner, 1988 | gas phase; B |
By formula: Na+ + C4H10O = (Na+ • C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 28.0 ± 1.0 | kcal/mol | CIDT | Rodgers and Armentrout, 2000 | RCD |
ΔrH° | 27.8 ± 1.0 | kcal/mol | CIDT | Rodgers and Armentrout, 1999 | RCD |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
21.4 | 298. | IMRE | McMahon and Ohanessian, 2000 | Anchor alanine=39.89; RCD |
+ 2 = C8H20FO2-
By formula: F- + 2C4H10O = C8H20FO2-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 22.00 ± 0.40 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 13.59 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
+ = C10H15OS-
By formula: C6H5S- + C4H10O = C10H15OS-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 14.60 ± 0.10 | kcal/mol | TDAs | Sieck and Meot-ner, 1989 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 7.20 ± 0.50 | kcal/mol | TDAs | Sieck and Meot-ner, 1989 | gas phase; B |
+ 2 = C8H20IO2-
By formula: I- + 2C4H10O = C8H20IO2-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 11.30 ± 0.40 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 4.32 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
+ 2 = C8H20BrO2-
By formula: Br- + 2C4H10O = C8H20BrO2-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 12.90 ± 0.40 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 5.65 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
+ 3 = C12H30BrO3-
By formula: Br- + 3C4H10O = C12H30BrO3-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 11.60 ± 0.50 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 4.33 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
+ = C4H10BrO-
By formula: Br- + C4H10O = C4H10BrO-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 15.80 ± 0.20 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 8.58 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
+ 3 = C12H30FO3-
By formula: F- + 3C4H10O = C12H30FO3-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 18.3 ± 1.0 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 7.81 | kcal/mol | TDAs | Bogdanov, Peschke, et al., 1999 | gas phase; B |
By formula: C6H5NO2- + C4H10O = (C6H5NO2- • C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 16.4 | kcal/mol | PHPMS | Sieck, 1985 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 27.2 | cal/mol*K | PHPMS | Sieck, 1985 | gas phase; M |
+ = C4H9D10FO-
By formula: F- + C4H10O = C4H9D10FO-
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrG° | 25.1 ± 2.0 | kcal/mol | IMRE | Wilkinson, Szulejko, et al., 1992 | gas phase; Reported relative to ROH..F-, 0.5 kcal/mol weaker.; B |
By formula: C4H8 + H2O = C4H10O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -12.775 | kcal/mol | Eqk | Eberz and Lucas, 1934 | gas phase; solvent: Aqueous; Heat of hydration; ALS |
By formula: C2H2O + C4H10O = C6H12O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -23.49 | kcal/mol | Cm | Rice and Greenberg, 1934 | liquid phase; ALS |
By formula: C4H10O = C4H8 + H2O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 12.6 | kcal/mol | Eqk | Taft and Riesz, 1955 | liquid phase; ALS |
By formula: Li+ + C4H10O = (Li+ • C4H10O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 42.5 ± 2.4 | kcal/mol | CIDT | Rodgers and Armentrout, 2000 | RCD |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias
Data compiled as indicated in comments:
B - John E. Bartmess
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 9.90 ± 0.03 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 191.8 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 184.6 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.90 ± 0.03 | PIPECO | Shao, Baer, et al., 1988 | LL |
9.97 ± 0.02 | PE | Cocksey, Eland, et al., 1971 | LLK |
10.23 | PE | Baker, Betteridge, et al., 1971 | LLK |
10.23 | PE | Baker, Betteridge, et al., 1971 | LLK |
10.26 | PE | Benoit and Harrison, 1977 | Vertical value; LLK |
10.25 ± 0.03 | PE | Peel and Willett, 1975 | Vertical value; LLK |
10.25 | PE | Robin and Kuebler, 1973 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C3H7O+ | 9.86 | CH3 | EI | Lossing, 1977 | LLK |
C3H7O+ | 10.1 ± 0.2 | CH3 | EI | Beauchamp, Caserio, et al., 1974 | LLK |
C3H7O+ | 9.87 ± 0.03 | CH3 | PI | Potapov and Sorokin, 1972 | LLK |
C3H7O+ | 9.87 | CH3 | EI | Potapov and Sorokin, 1970 | RDSH |
C3H7O+ | 10.2 | CH3 | EI | Harrison, Ivko, et al., 1966 | RDSH |
De-protonation reactions
C4H9O- + =
By formula: C4H9O- + H+ = C4H10O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 374.7 ± 1.0 | kcal/mol | D-EA | Ramond, Davico, et al., 2000 | gas phase; B |
ΔrH° | 374.6 ± 2.1 | kcal/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
ΔrH° | 376.00 ± 0.70 | kcal/mol | CIDT | DeTuri and Ervin, 1999 | gas phase; B |
ΔrH° | 374.3 ± 2.0 | kcal/mol | CIDC | Haas and Harrison, 1993 | gas phase; Both metastable and 50 eV collision energy.; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 368.1 ± 1.1 | kcal/mol | H-TS | Ramond, Davico, et al., 2000 | gas phase; B |
ΔrG° | 368.0 ± 2.0 | kcal/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
ΔrG° | 367.7 ± 2.1 | kcal/mol | H-TS | Haas and Harrison, 1993 | gas phase; Both metastable and 50 eV collision energy.; B |
References
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Hiraoka and Mizuse, 1987
Hiraoka, K.; Mizuse, S.,
Gas-Phase Solvation of Cl- with H2O, CH3OH, C2H4OH, i-C3H7OH, n-C3H7OH, and t-C4H9OH,
Chem. Phys., 1987, 118, 3, 457, https://doi.org/10.1016/0301-0104(87)85078-4
. [all data]
Sieck, 1985
Sieck, L.W.,
Thermochemistry of Solvation of NO2- and C6H5NO2- by Polar Molecules in the Vapor Phase. Comparison with Cl- and Variation with Ligand Structure.,
J. Phys. Chem., 1985, 89, 25, 5552, https://doi.org/10.1021/j100271a049
. [all data]
Larson and McMahon, 1984
Larson, J.W.; McMahon, T.B.,
Gas phase negative ion chemistry of alkylchloroformates,
Can. J. Chem., 1984, 62, 675. [all data]
French, Ikuta, et al., 1982
French, M.A.; Ikuta, S.; Kebarle, P.,
Hydrogen bonding of O-H and C-H hydrogen donors to Cl-. Results from mass spectrometric measurement of the ion-molecule equilibria RH + Cl- = RHCl-,
Can. J. Chem., 1982, 60, 1907. [all data]
Kebarle, 1977
Kebarle, P.,
Ion Thermochemistry and Solvation from Gas Phase Ion Equilibria,
Ann. Rev. Phys. Chem., 1977, 28, 1, 445, https://doi.org/10.1146/annurev.pc.28.100177.002305
. [all data]
Yamdagni and Kebarle, 1971
Yamdagni, R.; Kebarle, P.,
Hydrogen bonding energies to negative ions from gas phase measurements of ionic equilibria,
J. Am. Chem. Soc., 1971, 93, 7139. [all data]
Bogdanov, Peschke, et al., 1999
Bogdanov, B.; Peschke, M.; Tonner, D.S.; Szulejko, J.E.; McMahon, T.B.,
Stepwise solvation of halides by alcohol molecules in the gas phase,
Int. J. Mass Spectrom., 1999, 187, 707-725, https://doi.org/10.1016/S1387-3806(98)14180-5
. [all data]
Larson and McMahon, 1984, 2
Larson, J.W.; McMahon, T.B.,
Hydrogen bonding in gas phase anions. An experimental investigation of the interaction between chloride ion and bronsted acids from ICR chloride exchange equilibria,
J. Am. Chem. Soc., 1984, 106, 517. [all data]
Ramond, Davico, et al., 2000
Ramond, T.M.; Davico, G.E.; Schwartz, R.L.; Lineberger, W.C.,
Vibronic structure of alkoxy radicals via photoelectron spectroscopy,
J. Chem. Phys., 2000, 112, 3, 1158-1169, https://doi.org/10.1063/1.480767
. [all data]
Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr.,
The gas phase acidity scale from methanol to phenol,
J. Am. Chem. Soc., 1979, 101, 6047. [all data]
DeTuri and Ervin, 1999
DeTuri, V.F.; Ervin, K.M.,
Competitive threshold collision-induced dissociation: Gas-phase acidities and bond dissociation energies for a series of alcohols,
J. Phys. Chem. A, 1999, 103, 35, 6911-6920, https://doi.org/10.1021/jp991459m
. [all data]
Haas and Harrison, 1993
Haas, M.J.; Harrison, A.G.,
The Fragmentation of Proton-Bound Cluster Ions and the Gas-Phase Acidities of Alcohols,
Int. J. Mass Spectrom. Ion Proc., 1993, 124, 2, 115, https://doi.org/10.1016/0168-1176(93)80003-W
. [all data]
Caldwell, Rozeboom, et al., 1984
Caldwell, G.; Rozeboom, M.D.; Kiplinger, J.P.; Bartmess, J.E.,
Anion-alcohol hydrogen bond strengths in the gas phase,
J. Am. Chem. Soc., 1984, 106, 4660. [all data]
Paul and Kebarle, 1990
Paul, G.J.C.; Kebarle, P.,
Thermodynamics of the Association Reactions OH- - H2O = HOHOH- and CH3O- - CH3OH = CH3OHOCH3- in the Gas Phase,
J. Phys. Chem., 1990, 94, 12, 5184, https://doi.org/10.1021/j100375a076
. [all data]
Meot-ner and Sieck, 1986
Meot-ner, M.; Sieck, L.W.,
Relative acidities of water and methanol, and the stabilities of the dimer adducts,
J. Phys. Chem., 1986, 90, 6687. [all data]
Meot-Ner(Mautner), 1986
Meot-Ner(Mautner), M.,
Comparative Stabilities of Cationic and Anionic Hydrogen-Bonded Networks. Mixed Clusters of Water-Methanol,
J. Am. Chem. Soc., 1986, 108, 20, 6189, https://doi.org/10.1021/ja00280a014
. [all data]
Larson and McMahon, 1983
Larson, J.W.; McMahon, T.B.,
Strong hydrogen bonding in gas-phase anions. An ion cyclotron resonance determination of fluoride binding energetics to bronsted acids from gas-phase fluoride exchange equilibria measurements,
J. Am. Chem. Soc., 1983, 105, 2944. [all data]
Arshadi, Yamdagni, et al., 1970
Arshadi, M.; Yamdagni, R.; Kebarle, P.,
Hydration of Halide Negative Ions in the Gas Phase. II. Comparison of Hydration Energies for the Alkali Positive and Halide Negative Ions,
J. Phys. Chem., 1970, 74, 7, 1475, https://doi.org/10.1021/j100702a014
. [all data]
Stone and Splinter, 1984
Stone, J.A.; Splinter, D.E.,
A high-pressure mass spectrometric study of the binding of (CH3)3Sn+ to lewis bases in the gas phase,
Int. J. Mass Spectrom. Ion Processes, 1984, 59, 169. [all data]
Meot-Ner, 1984
Meot-Ner, (Mautner)M.,
The Ionic Hydrogen Bond and Ion Solvation. 1. -NH+ O-, -NH+ N- and -OH+ O- Bonds. Correlations with Proton Affinity. Deviations Due to Structural Effects,
J. Am. Chem. Soc., 1984, 106, 5, 1257, https://doi.org/10.1021/ja00317a015
. [all data]
Caldwell and Kebarle, 1984
Caldwell, G.; Kebarle, P.,
Binding energies and structural effects in halide anion-ROH and -RCOOH complexes from gas phase equilibria measurements,
J. Am. Chem. Soc., 1984, 106, 967. [all data]
Larson and McMahon, 1987
Larson, J.W.; McMahon, T.B.,
Hydrogen bonding in gas phase anions. The energetics of interaction between cyanide ion and bronsted acids,
J. Am. Chem. Soc., 1987, 109, 6230. [all data]
Payzant, Yamdagni, et al., 1971
Payzant, J.D.; Yamdagni, R.; Kebarle, P.,
Hydration of CN-, NO2-, NO3-, and HO- in the gas phase,
Can. J. Chem., 1971, 49, 3308. [all data]
Sieck and Meot-ner, 1989
Sieck, L.W.; Meot-ner, M.,
Ionic Hydrogen Bond and Ion Solvation. 8. RS-..HOR Bond Strengths. Correlation with Acidities.,
J. Phys. Chem., 1989, 93, 4, 1586, https://doi.org/10.1021/j100341a079
. [all data]
Meot-ner, 1988
Meot-ner, M.,
The Ionic Hydrogen Bond and Solvation. 7. Interaction Energies of Carbanions with Solvent Molecules,
J. Am. Chem. Soc., 1988, 110, 12, 3858, https://doi.org/10.1021/ja00220a022
. [all data]
Rodgers and Armentrout, 2000
Rodgers, M.T.; Armentrout, P.B.,
Noncovalent Metal-Ligand Bond Energies as Studied by Threshold Collision-Induced Dissociation,
Mass Spectrom. Rev., 2000, 19, 4, 215, https://doi.org/10.1002/1098-2787(200007)19:4<215::AID-MAS2>3.0.CO;2-X
. [all data]
Rodgers and Armentrout, 1999
Rodgers, M.T.; Armentrout, P.B.,
Absolute Binding Energies of Sodium Ions to Short-Chain Alcohols, CnH2n+2O, n=1-4, Determined by Threshold Collision-Induced Dissociation Experiments and Ab Initio Theory, 1999, 4955. [all data]
McMahon and Ohanessian, 2000
McMahon, T.B.; Ohanessian, G.,
An Experimental and Ab Initio Study of the Nature of the Binding in Gas-Phase Complexes of Sodium Ions,
Chem. Eur. J., 2000, 6, 16, 2931, https://doi.org/10.1002/1521-3765(20000818)6:16<2931::AID-CHEM2931>3.0.CO;2-7
. [all data]
Wilkinson, Szulejko, et al., 1992
Wilkinson, F.E.; Szulejko, J.E.; Allison, C.E.; Mcmahon, T.B.,
Fourier Transform Ion Cyclotron Resonance Investigation of the Deuterium Isotope Effect on Gas Phase Ion/Molecule Hydrogen Bonding Interactions in Alcohol-Fluoride Adduct Ions,
Int. J. Mass Spectrom., 1992, 117, 487-505, https://doi.org/10.1016/0168-1176(92)80110-M
. [all data]
Eberz and Lucas, 1934
Eberz, W.F.; Lucas, H.J.,
The hydration of unsaturated compounds. II. The equilibrium between i-butene and t-butanol and the free energy of hydration of i-butene,
J. Am. Chem. Soc., 1934, 56, 1230-1234. [all data]
Rice and Greenberg, 1934
Rice, F.O.; Greenberg, J.,
Ketene. III. Heat of formation and heat of reaction with alcohols,
J. Am. Chem. Soc., 1934, 38, 2268-2270. [all data]
Taft and Riesz, 1955
Taft, R.W., Jr.; Riesz, P.,
Thermodynamic properties for the system isobutene-t-butyl alcohol,
J. Am. Chem. Soc., 1955, 77, 902-904. [all data]
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Shao, Baer, et al., 1988
Shao, J.D.; Baer, T.; Lewis, D.K.,
Dissociation dynamics of energy-selected ion-dipole complexes. 2. Butyl alcohol ions,
J. Phys. Chem., 1988, 92, 5123. [all data]
Cocksey, Eland, et al., 1971
Cocksey, B.J.; Eland, J.H.D.; Danby, C.J.,
The effect of alkyl substitution on ionisation potential,
J. Chem. Soc., 1971, (B), 790. [all data]
Baker, Betteridge, et al., 1971
Baker, A.D.; Betteridge, D.; Kemp, N.R.; Kirby, R.E.,
Application of photoelectron spectrometry to pesticide analysis. II.Photoelectron spectra of hydroxy-, and halo-alkanes and halohydrins,
Anal. Chem., 1971, 43, 375. [all data]
Benoit and Harrison, 1977
Benoit, F.M.; Harrison, A.G.,
Predictive value of proton affinity. Ionization energy correlations involving oxygenated molecules,
J. Am. Chem. Soc., 1977, 99, 3980. [all data]
Peel and Willett, 1975
Peel, J.B.; Willett, G.D.,
Photoelectron spectroscopic studies of the higher alcohols,
Aust. J. Chem., 1975, 28, 2357. [all data]
Robin and Kuebler, 1973
Robin, M.B.; Kuebler, N.A.,
Excited electronic states of the simple alcohols,
J. Electron Spectrosc. Relat. Phenom., 1973, 1, 13. [all data]
Lossing, 1977
Lossing, F.P.,
Heats of formation of some isomeric [CnH2n+1]+ ions. Substitutional effects on ion stability,
J. Am. Chem. Soc., 1977, 99, 7526. [all data]
Beauchamp, Caserio, et al., 1974
Beauchamp, J.L.; Caserio, M.C.; McMahon, T.B.,
Ion-molecule reactions of tert-butyl alcohol by ion cyclotron resonance spectroscopy,
J. Am. Chem. Soc., 1974, 96, 6243. [all data]
Potapov and Sorokin, 1972
Potapov, V.K.; Sorokin, V.V.,
Kinetic energies of products of dissociative photoionization of molecules. I. Aliphatic ketones and alcohols,
Khim. Vys. Energ., 1972, 6, 387. [all data]
Potapov and Sorokin, 1970
Potapov, V.K.; Sorokin, V.V.,
Investigation of ionic molecular reactions proceeding during photoionization of aromatic compounds and alcohols,
Dokl. Akad. Nauk SSSR, 1970, 195, 616, In original 848. [all data]
Harrison, Ivko, et al., 1966
Harrison, A.G.; Ivko, A.; Van Raalte, D.,
Energetics of formation of some oxygenated ions and the proton affinities of carbonyl compounds,
Can. J. Chem., 1966, 44, 1625. [all data]
Notes
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- Symbols used in this document:
AE Appearance energy IE (evaluated) Recommended ionization energy T Temperature ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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