Isobutyronitrile
- Formula: C4H7N
- Molecular weight: 69.1051
- IUPAC Standard InChIKey: LRDFRRGEGBBSRN-UHFFFAOYSA-N
- CAS Registry Number: 78-82-0
- 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. - Other names: Propanenitrile, 2-methyl-; Isopropyl cyanide; Isopropylnitrile; 1-Cyano-1-methylethane; 2-Cyanopropane; 2-Methylpropanenitrile; 2-Methylpropionitrile; iso-C3H7CN; Dimethylacetonitrile; Isopropylkyanid; UN 2284; α-Methylpropanenitrile; NSC 60536
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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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 22.8 | kJ/mol | Ccr | Hall and Baldt, 1971 | |
ΔfH°gas | 24.3 ± 1.8 | kJ/mol | Ccb | Evans and Skinner, 1959 | Reanalyzed by Cox and Pilcher, 1970, Original value = 23. kJ/mol |
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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -13.8 | kJ/mol | Ccr | Hall and Baldt, 1971 | ALS |
ΔfH°liquid | -12.2 ± 0.84 | kJ/mol | Ccb | Evans and Skinner, 1959 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -2560.6 ± 1.3 | kJ/mol | Ccr | Hall and Baldt, 1971 | ALS |
ΔcH°liquid | -2562.3 ± 0.75 | kJ/mol | Ccb | Evans and Skinner, 1959 | ALS |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
156.2 | 297. | Hall and Baldt, 1971 | DH |
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:
BS - Robert L. Brown and Stephen E. Stein
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.
AC - William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 378. ± 5. | K | AVG | N/A | Average of 19 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 201.65 | K | N/A | Timmermans, 1952 | Uncertainty assigned by TRC = 0.5 K; TRC |
Tfus | 201.65 | K | N/A | Timmermans and Delcourt, 1934 | Uncertainty assigned by TRC = 0.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 37.22 | kJ/mol | N/A | Majer and Svoboda, 1985 | |
ΔvapH° | 36.7 | kJ/mol | V | Hall and Baldt, 1971 | ALS |
ΔvapH° | 36.6 | kJ/mol | N/A | Hall and Baldt, 1971 | DRB |
ΔvapH° | 37.13 ± 0.02 | kJ/mol | V | Howard and Wadso, 1970 | ALS |
ΔvapH° | 36.5 | kJ/mol | N/A | Evans and Skinner, 1959 | DRB |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
32.39 | 377. | N/A | Majer and Svoboda, 1985 | |
35.9 | 339. | N/A | Sukhova, Vlasov, et al., 1979 | Based on data from 324. to 354. K.; AC |
37.5 | 321. | BG | Baldt and Hall, 1971 | Based on data from 303. to 352. K.; AC |
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
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
C4H6N- + =
By formula: C4H6N- + H+ = C4H7N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1569. ± 9.2 | kJ/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1539. ± 8.4 | kJ/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale |
IR Spectrum
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Gas Phase Spectrum
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Additional Data
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Owner | NIST Standard Reference Data Program Collection (C) 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | Sadtler Research Labs Under US-EPA Contract |
State | gas |
Mass spectrum (electron ionization)
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | Japan AIST/NIMC Database- Spectrum MS-NW- 916 |
NIST MS number | 227719 |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Hall and Baldt, 1971
Hall, H.K., Jr.; Baldt, J.H.,
Thermochemistry of strained-ring bridgehead nitriles and esters,
J. Am. Chem. Soc., 1971, 93, 140-145. [all data]
Evans and Skinner, 1959
Evans, F.W.; Skinner, H.A.,
The heats of combustion of organic compounds of nitrogen Part 2.-n-Propyl, isopropyl and phenyl cyandies,
Trans. Faraday Soc., 1959, 55, 255-259. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Timmermans, 1952
Timmermans, J.,
Freezing points of organic compounds. VVI New determinations.,
Bull. Soc. Chim. Belg., 1952, 61, 393. [all data]
Timmermans and Delcourt, 1934
Timmermans, J.; Delcourt, Y.,
Work of the International Bureau of Physico-Chemical Standards.VI. Physical Constants of Twenty Organic Compounds.,
J. Chim. Phys. Phys.-Chim. Biol., 1934, 31, 85-121. [all data]
Majer and Svoboda, 1985
Majer, V.; Svoboda, V.,
Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]
Howard and Wadso, 1970
Howard, P.B.; Wadso, I.,
Enthalpies of vaporization of organic compounds IV. Alkyl Nitriles,
Acta Chem. Scand., 1970, 24, 145. [all data]
Sukhova, Vlasov, et al., 1979
Sukhova, S.I.; Vlasov, O.N.; Li, L.V.,
Nov. Khim. Sredstva Azsch Rast., 1979, 51. [all data]
Baldt and Hall, 1971
Baldt, J.H.; Hall, H.K.K., Jr.,
Thermochemistry of strained-ring bridgehead nitriles and esters,
J. Am. Chem. Soc., 1971, 93, 140-145. [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]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid Tboil Boiling point Tfus Fusion (melting) point ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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