Methyl isocyanide

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Gas phase 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Δfgas39.1 ± 1.7kcal/molCmBaghal-Vayjooee, Collister, et al., 1977Reanalyzed by Pedley, Naylor, et al., 1986, Original value = 41.32 ± 0.24 kcal/mol; Heat of isomerization; ALS
Δfgas34.13kcal/molN/ALemoult, 1906Value computed using ΔfHliquid° value of 112.0 kj/mol from Lemoult, 1906 and ΔvapH° value of 30.8 kj/mol from Baghal-Vayjooee, Collister, et al., 1977.; DRB

Condensed phase 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Δfliquid31.7 ± 1.7kcal/molCmBaghal-Vayjooee, Collister, et al., 1977Reanalyzed by Pedley, Naylor, et al., 1986, Original value = 33.95 ± 0.35 kcal/mol; Heat of isomerization
Δfliquid26.7kcal/molCcbLemoult, 1906 
Quantity Value Units Method Reference Comment
Δcliquid-318.7kcal/molCcbLemoult and Jungfleisch, 1909 
Δcliquid-318.7kcal/molCcbLemoult, 1906 

Phase change 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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Tfus228.15KN/AGautier, 1869Uncertainty assigned by TRC = 3. K; TRC
Quantity Value Units Method Reference Comment
Δvap7.37 ± 0.25kcal/molVBaghal-Vayjooee, Collister, et al., 1977Heat of isomerization; ALS
Δvap7.36kcal/molN/ABaghal-Vayjooee, Collister, et al., 1977DRB

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


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 as indicated in comments:
B - John E. Bartmess
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

C2H2N- + Hydrogen cation = Methyl isocyanide

By formula: C2H2N- + H+ = C2H3N

Quantity Value Units Method Reference Comment
Δr380.6 ± 2.1kcal/molG+TSMatimba, Crabbendam, et al., 1992gas phase; B
Δr374.5 ± 2.1kcal/molG+TSFilley, DePuy, et al., 1987gas phase; Matimba, Crabbendam, et al., 1992 indicate that CN- loss interfered with equilibrium here.; B
Quantity Value Units Method Reference Comment
Δr373.1 ± 2.0kcal/molIMREMatimba, Crabbendam, et al., 1992gas phase; B
Δr367.0 ± 2.0kcal/molIMREFilley, DePuy, et al., 1987gas phase; Matimba, Crabbendam, et al., 1992 indicate that CN- loss interfered with equilibrium here.; B

Methyl isocyanide = Acetonitrile

By formula: C2H3N = C2H3N

Quantity Value Units Method Reference Comment
Δr-23.70 ± 0.14kcal/molCmBaghal-Vayjooee, Collister, et al., 1977gas phase; Heat of isomerization; ALS

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Notes

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

Baghal-Vayjooee, Collister, et al., 1977
Baghal-Vayjooee, M.H.; Collister, J.L.; Pritchard, H.O., The enthalpy of isomerisation of methyl isocyanide, Can. J. Chem., 1977, 55, 2634-2636. [all data]

Pedley, Naylor, et al., 1986
Pedley, J.B.; Naylor, R.D.; Kirby, S.P., Thermochemical Data of Organic Compounds, Chapman and Hall, New York, 1986, 1-792. [all data]

Lemoult, 1906
Lemoult, P., Carbylamines et nitriles., Compt. Rend., 1906, 143, 902-904. [all data]

Lemoult and Jungfleisch, 1909
Lemoult, M.P.; Jungfleisch, M.E., Thermochimie. - Comparaisons entre les nitriles et les carbylamines, Compt. Rend., 1909, 148, 1602-1604. [all data]

Gautier, 1869
Gautier, A., Ann. Chim. Phys., 1869, 17, 103. [all data]

Matimba, Crabbendam, et al., 1992
Matimba, H.E.K.; Crabbendam, A.M.; Ingemann, S.; Nibbering, N.M.M., Gas-phase Bimolecular Chemistry of the .-CHNC and .-CHCN Radical Anions, Int. J. Mass Spectrom. Ion Proc., 1992, 114, 1-2, 85, https://doi.org/10.1016/0168-1176(92)85024-T . [all data]

Filley, DePuy, et al., 1987
Filley, J.; DePuy, C.H.; Bierbaum, V.M., Gas-Phase Negative Ion Chemistry of Methyl Isocyanide, J. Am. Chem. Soc., 1987, 109, 20, 5992, https://doi.org/10.1021/ja00254a017 . [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References