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Reaction data

C2H- + Hydrogen cation = Acetylene


Enthalpy of reaction at standard conditions (nominally 298.15 K, 1 atm.)

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

Data compiled by: John E. Bartmess

DeltarH° (kJ/mol) Method Reference Comment
1583.48 ± 0.29D-EAZhou, Garand, et al., 2007gas phase; B
1583.4 ± 0.63D-EAErvin and Lineberger, 1991gas phase; B
1581.4 ± 2.8G+TSErvin, Gronert, et al., 1990gas phase; B
1581.6 ± 2.1N/ARuscic and Berkowitz, 1990gas phase; 376.7 0K; corrected with data from Gurvich, Veyts, et al.; B
1589.1 ± 2.1TDEqMeot-ner and Sieck, 1986gas phase; value altered from reference due to change in acidity scale; B
1576. ± 8.8G+TSBartmess, Scott, et al., 1979gas phase; value altered from reference due to change in acidity scale; B
1610.7 ± 2.8G+TSBohme, MacKay, et al., 1974gas phase; B
1572. ± 38.EndoHughes, Lifschitz, et al., 1973gas phase; B

References

Go To: Top, Enthalpy of reaction at standard conditions (nominally 298.15 K, 1 atm.), Notes

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

Zhou, Garand, et al., 2007
Zhou, J.; Garand, E.; Neumark, D.M., Vibronic structure in C2H and C2D from anion slow electron velocity-map imaging spectroscopy, J. Chem. Phys., 2007, 127, 11, 114313, https://doi.org/10.1063/1.2768932 . [all data]

Ervin and Lineberger, 1991
Ervin, K.M.; Lineberger, W.C., Photoelectron Spectra of C2- and C2H-, J. Phys. Chem., 1991, 95, 3, 1167, https://doi.org/10.1021/j100156a026 . [all data]

Ervin, Gronert, et al., 1990
Ervin, K.M.; Gronert, S.; Barlow, S.E.; Gilles, M.K.; Harrison, A.G.; Bierbaum, V.M.; DePuy, C.H.; Lin, W.C., Bonds Strengths of Ethylene and Acetylene, J. Am. Chem. Soc., 1990, 112, 15, 5750, https://doi.org/10.1021/ja00171a013 . [all data]

Ruscic and Berkowitz, 1990
Ruscic, B.; Berkowitz, J., Photoion-pair Formation and Photoelectron-induced Dissociative Attachment in C2H2: D0(HCC-H), J. Chem. Phys., 1990, 93, 8, 5586, https://doi.org/10.1063/1.459629 . [all data]

Gurvich, Veyts, et al.
Gurvich, L.V.; Veyts, I.V.; Alcock, C.B., Hemisphere Publishing, NY, 1989, V. 1 2, Thermodynamic Properties of Individual Substances, 4th Ed. [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]

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]

Bohme, MacKay, et al., 1974
Bohme, D.K.; MacKay, G.I.; Schiff, H.I.; Hemsworth, R.S., Equilibrium OH- + C2H2 = C2H- + H2O and the determination of Hf298(C2H-), J. Chem. Phys., 1974, 61, 2175. [all data]

Hughes, Lifschitz, et al., 1973
Hughes, B.M.; Lifschitz, C.; Tiernan, T.O., Electron affinities from endothermic negative-ion charge-transfer reactions. III. NO, NO2, S2, CS2, Cl2, Br2, I2, and C2H, J. Chem. Phys., 1973, 59, 3162. [all data]


Notes

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