Diazene, dibutyl
- Formula: C8H18N2
- Molecular weight: 142.2419
- IUPAC Standard InChIKey: SZNDPAPNQABPGR-UHFFFAOYSA-N
- CAS Registry Number: 2159-75-3
- 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: Di-n-butyldiazene
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas Chromatography, References, Notes
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:
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 19.3 | kJ/mol | N/A | Lebedeva, Masalitinova, et al., 1980 | Value computed using ΔfHliquid° value of -30.0 kj/mol from Lebedeva, Masalitinova, et al., 1980 and ΔvapH° value of 49.3 kj/mol from Engel, Montgomery, et al., 1978.; DRB |
ΔfH°gas | 9.2 ± 3.8 | kJ/mol | Ccb | Engel, Montgomery, et al., 1978 | ALS |
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 |
---|---|---|---|---|---|
ΔfH°liquid | -30. | kJ/mol | Ccb | Lebedeva, Masalitinova, et al., 1980 | |
ΔfH°liquid | -40.1 ± 3.8 | kJ/mol | Ccb | Engel, Montgomery, et al., 1978 | |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -5690. ± 1. | kJ/mol | Ccb | Lebedeva, Masalitinova, et al., 1980 | |
ΔcH°liquid | -5680.4 ± 3.6 | kJ/mol | Ccb | Engel, Montgomery, et al., 1978 |
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
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 |
---|---|---|---|---|---|
ΔvapH° | 49.31 | kJ/mol | N/A | Majer and Svoboda, 1985 | |
ΔvapH° | 49.3 ± 0.2 | kJ/mol | V | Engel, Montgomery, et al., 1978 | ALS |
ΔvapH° | 49.3 | kJ/mol | N/A | Engel, Montgomery, et al., 1978 | DRB |
ΔvapH° | 49.3 ± 0.2 | kJ/mol | C | Engel, Montgomery, et al., 1978 | AC |
Reduced pressure boiling point
Tboil (K) | Pressure (bar) | Reference | Comment |
---|---|---|---|
332. to 333. | 0.024 | Buckingham and Donaghy, 1982 | BS |
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: 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
By formula: H2 + C8H18N2 = C8H20N2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -68.6 ± 0.8 | kJ/mol | Chyd | Engel, Owens, et al., 1993 | liquid phase; solvent: Hexane |
Gas Chromatography
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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
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Methyl Silicone | 962. | Zenkevich, 1999 | Program: not specified |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Lebedeva, Masalitinova, et al., 1980
Lebedeva, N.D.; Masalitinova, T.N.; Mon'yakova, O.N.; Oleinikova, T.P.,
Energy of hydrazone = azo compound tautomeric transformation,
J. Org. Chem. USSR (Engl. Transl.), 1980, 16, 226-228. [all data]
Engel, Montgomery, et al., 1978
Engel, P.S.; Montgomery, R.L.; Mansson, M.; Leckonby, R.A.; Foyt, H.L.; Rossini, F.D.,
Enthalpies of combustion, vaporization, and formation of methyl-n-butyldiazene and di-n-butyldiazene,
J. Chem. Thermodyn., 1978, 10, 205-211. [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]
Buckingham and Donaghy, 1982
Buckingham, J.; Donaghy, S.M.,
Dictionary of Organic Compounds: Fifth Edition, Chapman and Hall, New York, 1982, 1. [all data]
Engel, Owens, et al., 1993
Engel, P.S.; Owens, W.H.; Wang, C.,
The heat of oxidation of 1,2-di-n-butylhydrazine to azo-n-butane,
J. Phys. Chem., 1993, 97, 10486-10488. [all data]
Zenkevich, 1999
Zenkevich, I.G.,
Precalculation of Gas Chromatographic Retention Indices of Organic Compounds from Boiling Points of their Structural Analogues,
Zh. Struct. Khim., 1999, 40, 1, 121-130. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas Chromatography, References
- Symbols used in this document:
Tboil Boiling 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 ΔrH° Enthalpy of reaction at standard conditions ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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