Ethyl, positive ion

• Formula: C₂H₅⁺
• Molecular weight: 29.0606
• Information on this page:
  • Reaction thermochemistry data
  • Ion clustering data
  • References
  • Notes
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Reaction thermochemistry data

Go To: Top, Ion clustering 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 by: 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. 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

C₂H₅⁺ +  = (C₂H₅⁺  )

By formula: C₂H₅⁺ + CH₄ = (C₂H₅⁺  CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	23.0	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
rH°	28.	kJ/mol	PHPMS	Hiroka and Kebarle, 1975	gas phase
rH°	10.	kJ/mol	HPMS	Field and Beggs, 1971	gas phase; Entropy change is questionable
Quantity	Value	Units	Method	Reference	Comment
rS°	92.9	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
rS°	97.9	J/mol*K	PHPMS	Hiroka and Kebarle, 1975	gas phase
rS°	36.	J/mol*K	HPMS	Field and Beggs, 1971	gas phase; Entropy change is questionable

(C₂H₅⁺  ) +  = (C₂H₅⁺  2)

By formula: (C₂H₅⁺  N₂) + N₂ = (C₂H₅⁺  2N₂)

Quantity	Value	Units	Method	Reference	Comment
rH°	19.	kJ/mol	HPMS	Speller, 1983	gas phase; deuterated, Entropy change is questionable
Quantity	Value	Units	Method	Reference	Comment
rS°	45.6	J/mol*K	HPMS	Speller, 1983	gas phase; deuterated, Entropy change is questionable

(C₂H₅⁺  9) +  = (C₂H₅⁺  10)

By formula: (C₂H₅⁺  9CH₄) + CH₄ = (C₂H₅⁺  10CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	7.99	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase; Entropy change calculated or estimated
Quantity	Value	Units	Method	Reference	Comment
rS°	92.	J/mol*K	N/A	Hiraoka, Mori, et al., 1993	gas phase; Entropy change calculated or estimated

(C₂H₅⁺  2) +  = (C₂H₅⁺  3)

By formula: (C₂H₅⁺  2C₂H₅Cl) + C₂H₅Cl = (C₂H₅⁺  3C₂H₅Cl)

Quantity	Value	Units	Method	Reference	Comment
rH°	20.	kJ/mol	HPMS	Luczynski and Wincel, 1974	gas phase; Entropy change is questionable
Quantity	Value	Units	Method	Reference	Comment
rS°	32.	J/mol*K	HPMS	Luczynski and Wincel, 1974	gas phase; Entropy change is questionable

(C₂H₅⁺  ) +  = (C₂H₅⁺  2)

By formula: (C₂H₅⁺  C₂H₅Cl) + C₂H₅Cl = (C₂H₅⁺  2C₂H₅Cl)

Quantity	Value	Units	Method	Reference	Comment
rH°	22.	kJ/mol	HPMS	Luczynski and Wincel, 1974	gas phase; Entropy change is questionable
Quantity	Value	Units	Method	Reference	Comment
rS°	36.	J/mol*K	HPMS	Luczynski and Wincel, 1974	gas phase; Entropy change is questionable

C₂H₅⁺ +  = (C₂H₅⁺  )

By formula: C₂H₅⁺ + CH₂Cl₂ = (C₂H₅⁺  CH₂Cl₂)

Quantity	Value	Units	Method	Reference	Comment
rH°	151.	kJ/mol	PHPMS	Sharma, Meza de Hojer, et al., 1985	gas phase; Entropy change is questionable
Quantity	Value	Units	Method	Reference	Comment
rS°	189.	J/mol*K	PHPMS	Sharma, Meza de Hojer, et al., 1985	gas phase; Entropy change is questionable

(C₂H₅⁺  2) +  = (C₂H₅⁺  3)

By formula: (C₂H₅⁺  2CH₄) + CH₄ = (C₂H₅⁺  3CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	9.54	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	74.9	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase

(C₂H₅⁺  3) +  = (C₂H₅⁺  4)

By formula: (C₂H₅⁺  3CH₄) + CH₄ = (C₂H₅⁺  4CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	9.46	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	77.0	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase

(C₂H₅⁺  4) +  = (C₂H₅⁺  5)

By formula: (C₂H₅⁺  4CH₄) + CH₄ = (C₂H₅⁺  5CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	9.29	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	79.1	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase

(C₂H₅⁺  5) +  = (C₂H₅⁺  6)

By formula: (C₂H₅⁺  5CH₄) + CH₄ = (C₂H₅⁺  6CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	9.25	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	81.2	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase

(C₂H₅⁺  6) +  = (C₂H₅⁺  7)

By formula: (C₂H₅⁺  6CH₄) + CH₄ = (C₂H₅⁺  7CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	8.91	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	86.6	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase

(C₂H₅⁺  7) +  = (C₂H₅⁺  8)

By formula: (C₂H₅⁺  7CH₄) + CH₄ = (C₂H₅⁺  8CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	8.79	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	87.9	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase

(C₂H₅⁺  8) +  = (C₂H₅⁺  9)

By formula: (C₂H₅⁺  8CH₄) + CH₄ = (C₂H₅⁺  9CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	8.70	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	91.2	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase

(C₂H₅⁺  ) +  = (C₂H₅⁺  2)

By formula: (C₂H₅⁺  CH₄) + CH₄ = (C₂H₅⁺  2CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	9.92	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	67.4	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase

C₂H₅⁺ +  = (C₂H₅⁺  )

By formula: C₂H₅⁺ + CH₃Cl = (C₂H₅⁺  CH₃Cl)

Quantity	Value	Units	Method	Reference	Comment
rH°	128.	kJ/mol	PHPMS	Sen Sharma and Kebarle, 1978	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	128.	J/mol*K	PHPMS	Sen Sharma and Kebarle, 1978	gas phase

C₂H₅⁺ +  = (C₂H₅⁺  )

By formula: C₂H₅⁺ + N₂ = (C₂H₅⁺  N₂)

Quantity	Value	Units	Method	Reference	Comment
rH°	29.	kJ/mol	HPMS	Speller, 1983	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	76.1	J/mol*K	HPMS	Speller, 1983	gas phase

Ion clustering 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 compiled by: 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

C₂H₅⁺ +  = (C₂H₅⁺  )

By formula: C₂H₅⁺ + CH₂Cl₂ = (C₂H₅⁺  CH₂Cl₂)

Quantity	Value	Units	Method	Reference	Comment
rH°	151.	kJ/mol	PHPMS	Sharma, Meza de Hojer, et al., 1985	gas phase; Entropy change is questionable
Quantity	Value	Units	Method	Reference	Comment
rS°	189.	J/mol*K	PHPMS	Sharma, Meza de Hojer, et al., 1985	gas phase; Entropy change is questionable

C₂H₅⁺ +  = (C₂H₅⁺  )

By formula: C₂H₅⁺ + CH₃Cl = (C₂H₅⁺  CH₃Cl)

Quantity	Value	Units	Method	Reference	Comment
rH°	128.	kJ/mol	PHPMS	Sen Sharma and Kebarle, 1978	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	128.	J/mol*K	PHPMS	Sen Sharma and Kebarle, 1978	gas phase

C₂H₅⁺ +  = (C₂H₅⁺  )

By formula: C₂H₅⁺ + CH₄ = (C₂H₅⁺  CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	23.0	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
rH°	28.	kJ/mol	PHPMS	Hiroka and Kebarle, 1975	gas phase
rH°	10.	kJ/mol	HPMS	Field and Beggs, 1971	gas phase; Entropy change is questionable
Quantity	Value	Units	Method	Reference	Comment
rS°	92.9	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
rS°	97.9	J/mol*K	PHPMS	Hiroka and Kebarle, 1975	gas phase
rS°	36.	J/mol*K	HPMS	Field and Beggs, 1971	gas phase; Entropy change is questionable

(C₂H₅⁺  ) +  = (C₂H₅⁺  2)

By formula: (C₂H₅⁺  CH₄) + CH₄ = (C₂H₅⁺  2CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	9.92	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	67.4	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase

(C₂H₅⁺  2) +  = (C₂H₅⁺  3)

By formula: (C₂H₅⁺  2CH₄) + CH₄ = (C₂H₅⁺  3CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	9.54	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	74.9	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase

(C₂H₅⁺  3) +  = (C₂H₅⁺  4)

By formula: (C₂H₅⁺  3CH₄) + CH₄ = (C₂H₅⁺  4CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	9.46	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	77.0	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase

(C₂H₅⁺  4) +  = (C₂H₅⁺  5)

By formula: (C₂H₅⁺  4CH₄) + CH₄ = (C₂H₅⁺  5CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	9.29	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	79.1	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase

(C₂H₅⁺  5) +  = (C₂H₅⁺  6)

By formula: (C₂H₅⁺  5CH₄) + CH₄ = (C₂H₅⁺  6CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	9.25	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	81.2	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase

(C₂H₅⁺  6) +  = (C₂H₅⁺  7)

By formula: (C₂H₅⁺  6CH₄) + CH₄ = (C₂H₅⁺  7CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	8.91	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	86.6	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase

(C₂H₅⁺  7) +  = (C₂H₅⁺  8)

By formula: (C₂H₅⁺  7CH₄) + CH₄ = (C₂H₅⁺  8CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	8.79	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	87.9	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase

(C₂H₅⁺  8) +  = (C₂H₅⁺  9)

By formula: (C₂H₅⁺  8CH₄) + CH₄ = (C₂H₅⁺  9CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	8.70	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	91.2	J/mol*K	PHPMS	Hiraoka, Mori, et al., 1993	gas phase

(C₂H₅⁺  9) +  = (C₂H₅⁺  10)

By formula: (C₂H₅⁺  9CH₄) + CH₄ = (C₂H₅⁺  10CH₄)

Quantity	Value	Units	Method	Reference	Comment
rH°	7.99	kJ/mol	PHPMS	Hiraoka, Mori, et al., 1993	gas phase; Entropy change calculated or estimated
Quantity	Value	Units	Method	Reference	Comment
rS°	92.	J/mol*K	N/A	Hiraoka, Mori, et al., 1993	gas phase; Entropy change calculated or estimated

(C₂H₅⁺  ) +  = (C₂H₅⁺  2)

By formula: (C₂H₅⁺  C₂H₅Cl) + C₂H₅Cl = (C₂H₅⁺  2C₂H₅Cl)

Quantity	Value	Units	Method	Reference	Comment
rH°	22.	kJ/mol	HPMS	Luczynski and Wincel, 1974	gas phase; Entropy change is questionable
Quantity	Value	Units	Method	Reference	Comment
rS°	36.	J/mol*K	HPMS	Luczynski and Wincel, 1974	gas phase; Entropy change is questionable

(C₂H₅⁺  2) +  = (C₂H₅⁺  3)

By formula: (C₂H₅⁺  2C₂H₅Cl) + C₂H₅Cl = (C₂H₅⁺  3C₂H₅Cl)

Quantity	Value	Units	Method	Reference	Comment
rH°	20.	kJ/mol	HPMS	Luczynski and Wincel, 1974	gas phase; Entropy change is questionable
Quantity	Value	Units	Method	Reference	Comment
rS°	32.	J/mol*K	HPMS	Luczynski and Wincel, 1974	gas phase; Entropy change is questionable

C₂H₅⁺ +  = (C₂H₅⁺  )

By formula: C₂H₅⁺ + N₂ = (C₂H₅⁺  N₂)

Quantity	Value	Units	Method	Reference	Comment
rH°	29.	kJ/mol	HPMS	Speller, 1983	gas phase
Quantity	Value	Units	Method	Reference	Comment
rS°	76.1	J/mol*K	HPMS	Speller, 1983	gas phase

(C₂H₅⁺  ) +  = (C₂H₅⁺  2)

By formula: (C₂H₅⁺  N₂) + N₂ = (C₂H₅⁺  2N₂)

Quantity	Value	Units	Method	Reference	Comment
rH°	19.	kJ/mol	HPMS	Speller, 1983	gas phase; deuterated, Entropy change is questionable
Quantity	Value	Units	Method	Reference	Comment
rS°	45.6	J/mol*K	HPMS	Speller, 1983	gas phase; deuterated, Entropy change is questionable

References

Go To: Top, Reaction thermochemistry data, Ion clustering data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Hiraoka, Mori, et al., 1993
Hiraoka, K.; Mori, T.; Yamabe, S., The Gas-Phase Solvation of C2H5+, s-C3H7+ and s-C4H9+ with CH4. The Isomeric Structures of C2H5+ and C2H5+.CH4, Chem. Phys. Lett., 1993, 207, 2-3, 178, https://doi.org/10.1016/0009-2614(93)87011-Q . [all data]

Hiroka and Kebarle, 1975
Hiroka, K.; Kebarle, P., Information on the Proton Affinity and Protolysis of Propane from Measurement of the Ion Cluster Equilibrium: C2H5+ + CH4 = C3H9+, Can. J. Phys., 1975, 53, 970. [all data]

Field and Beggs, 1971
Field, F.H.; Beggs, D.P., Reversible Reactions of Gas Phase Ions. III. Studies with Methane at 0.1-1.0 Torr and 77-300 K, J. Am. Chem. Soc., 1971, 93, 7, 1585, https://doi.org/10.1021/ja00736a003 . [all data]

Speller, 1983
Speller, C.V., Ph. D. Thesis, Universite de Paris Sud, 1983. [all data]

Luczynski and Wincel, 1974
Luczynski, Z.; Wincel, H., Ion - Molecule Reactions in Ethyl Chloride, Int. J. Mass Spectrom. Ion Phys., 1974, 14, 1, 29, https://doi.org/10.1016/0020-7381(74)80059-8 . [all data]

Sharma, Meza de Hojer, et al., 1985
Sharma, D.M.S.; Meza de Hojer, S.; Kebarle, P., Stabilities of halonium ions from a study of gas-phase equilibria R+ + XR' = (RXR')+, J. Am. Chem. Soc., 1985, 107, 13, 3757, https://doi.org/10.1021/ja00299a002 . [all data]

Sen Sharma and Kebarle, 1978
Sen Sharma, D.K.; Kebarle, P., Binding Energies and Stabilities of Chloronium Ions from Study of the Gas - Phase Equilibria: R1+ + ClR2 = R1ClR2+, J. Am. Chem. Soc., 1978, 100, 18, 5826, https://doi.org/10.1021/ja00486a039 . [all data]

Notes

Go To: Top, Reaction thermochemistry data, Ion clustering data, References

• Symbols used in this document:
  

  rH°	Enthalpy of reaction at standard conditions
  rS°	Entropy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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