Chloromethyl cyanide

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Reaction thermochemistry data

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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

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Individual Reactions

C2HClN- + Hydrogen cation = Chloromethyl cyanide

By formula: C2HClN- + H+ = C2H2ClN

Quantity Value Units Method Reference Comment
Δr357.7 ± 2.2kcal/molG+TSPoutsma, Upshaw, et al., 2002gas phase
Δr348.2 ± 6.9kcal/molEIAEHacaloglu, Suzer, et al., 1988gas phase; From ClCH2CN. ΔGacid more likely to be ca. 360 - JEB.
Quantity Value Units Method Reference Comment
Δr350.0 ± 2.0kcal/molIMRBPoutsma, Upshaw, et al., 2002gas phase
Δr341.6 ± 7.8kcal/molH-TSHacaloglu, Suzer, et al., 1988gas phase; From ClCH2CN. ΔGacid more likely to be ca. 360 - JEB.

Gas phase ion energetics data

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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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
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
Proton affinity (review)178.2kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity170.9kcal/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
11.95 ± 0.01PEStaley, Kleckner, et al., 1976LLK
11.98PEBotter, Gounelle, et al., 1977Vertical value; LLK
12.05PELake and Thompson, 1970Vertical value; RDSH

De-protonation reactions

C2HClN- + Hydrogen cation = Chloromethyl cyanide

By formula: C2HClN- + H+ = C2H2ClN

Quantity Value Units Method Reference Comment
Δr357.7 ± 2.2kcal/molG+TSPoutsma, Upshaw, et al., 2002gas phase; B
Δr348.2 ± 6.9kcal/molEIAEHacaloglu, Suzer, et al., 1988gas phase; From ClCH2CN. ΔGacid more likely to be ca. 360 - JEB.; B
Quantity Value Units Method Reference Comment
Δr350.0 ± 2.0kcal/molIMRBPoutsma, Upshaw, et al., 2002gas phase; B
Δr341.6 ± 7.8kcal/molH-TSHacaloglu, Suzer, et al., 1988gas phase; From ClCH2CN. ΔGacid more likely to be ca. 360 - JEB.; B

References

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

Poutsma, Upshaw, et al., 2002
Poutsma, J.C.; Upshaw, S.D.; Squires, R.R.; Wenthold, P.G., Absolute heat of formation and singlet-triplet splitting for HCCN, J. Phys. Chem. A, 2002, 106, 6, 1067-1073, https://doi.org/10.1021/jp013653q . [all data]

Hacaloglu, Suzer, et al., 1988
Hacaloglu, J.; Suzer, S.; Oster, T.; Illenberger, E., Negative Ion Formation in Fluoroacetonitrile and Chloroacetonitrile following Low Energy Electron Impact, Chem. Phys. Lett., 1988, 153, 2-3, 268, https://doi.org/10.1016/0009-2614(88)85224-2 . [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]

Staley, Kleckner, et al., 1976
Staley, R.H.; Kleckner, J.E.; Beauchamp, J.L., Relationship between orbital ionization energies and molecular properties. Proton affinities and photoelectron spectra of nitriles, J. Am. Chem. Soc., 1976, 98, 2081. [all data]

Botter, Gounelle, et al., 1977
Botter, R.; Gounelle, Y.; Henry, Y.; Jullien, J.; Menes, F.; Solgadi, D., Photoelectron spectra of halogeno-3-propynes (XCH2≡CH) and halogeno- methylcyanides (XCH2C≡N) and comments on the attribution of fluorine IP, J. Electron Spectrosc. Relat. Phenom., 1977, 10, 393. [all data]

Lake and Thompson, 1970
Lake, R.F.; Thompson, H., The photoelectron spectra of some molecules containing the C N group, Proc. Roy. Soc. (London), 1970, A317, 187. [all data]


Notes

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