2,3-Butanediol, 2,3-dimethyl-
- Formula: C6H14O2
- Molecular weight: 118.1742
- IUPAC Standard InChI: InChI=1S/C6H14O2/c1-5(2,7)6(3,4)8/h7-8H,1-4H3
- IUPAC Standard InChIKey: IVDFJHOHABJVEH-UHFFFAOYSA-N
- CAS Registry Number: 76-09-5
- 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: Pinacol; Tetramethylethylene glycol; 2,3-Dimethyl-2,3-butanediol; meso-2,3-Dimethyl-2,3-butanediol; 2,3-Dihydroxy-2,3-dimethylbutane; 2,3-Dimethyl-2,3-dihydroxybutane
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Gas phase thermochemistry data
Go To: Top, Gas phase ion energetics 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -129.2 ± 2.2 | kcal/mol | Cm | Guthrie, 1977 | Hydrolysis |
Gas phase ion energetics data
Go To: Top, Gas phase 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 by: Sharon G. Lias and Joel F. Liebman
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| C3H7O+ | 9.60 | C3H7O | EI | Holmes, Lossing, et al., 1991 |
Gas Chromatography
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References, Notes
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
Kovats' RI, non-polar column, isothermal
| Column type | Active phase | Temperature (C) | I | Reference | Comment |
|---|---|---|---|---|---|
| Packed | Apiezon L | 160. | 850. | Bogoslovsky, Anvaer, et al., 1978 | Celite 545 |
Van Den Dool and Kratz RI, polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-Wax | 1338. | Shiratsuchi, Shimoda, et al., 1994 | 60. m/0.25 mm/0.25 μm, 2. K/min, 230. C @ 60. min; Tstart: 50. C |
| Capillary | DB-Wax | 1338. | Shiratsuchi, Shimoda, et al., 1994, 2 | 60. m/0.25 mm/0.25 μm, He, 2. K/min, 230. C @ 60. min; Tstart: 50. C |
Normal alkane RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | SE-30 | 843. | Vinogradov, 2004 | Program: not specified |
References
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Guthrie, 1977
Guthrie, J.P.,
Cyclization of glycol monoesters to give hemiorthoesters: a test of the thermochemical method for determining free energies of tetrahedral intermediates,
Can. J. Chem., 1977, 55, 3562-3574. [all data]
Holmes, Lossing, et al., 1991
Holmes, J.L.; Lossing, F.P.; Mayer, P.M.,
Heats of formation of oxygen-containing organic free radicals from appearance energy measurements,
J. Am. Chem. Soc., 1991, 113, 9723. [all data]
Bogoslovsky, Anvaer, et al., 1978
Bogoslovsky, Yu.N.; Anvaer, B.I.; Vigdergauz, M.S.,
Chromatographic constants in gas chromatography (in Russian), Standards Publ. House, Moscow, 1978, 192. [all data]
Shiratsuchi, Shimoda, et al., 1994
Shiratsuchi, H.; Shimoda, M.; Imayoshi, K.; Noda, K.; Osajima, Y.,
Off-flavor compounds in spray-dried skim milk powder,
J. Agric. Food Chem., 1994, 42, 6, 1323-1327, https://doi.org/10.1021/jf00042a014
. [all data]
Shiratsuchi, Shimoda, et al., 1994, 2
Shiratsuchi, H.; Shimoda, M.; Imayoshi, K.; Noda, K.; Osajima, Y.,
Volatile flavor compounds in spray-dried skim milk powder,
J. Agric. Food Chem., 1994, 42, 4, 984-988, https://doi.org/10.1021/jf00040a028
. [all data]
Vinogradov, 2004
Vinogradov, B.A.,
Production, composition, properties and application of essential oils, 2004, retrieved from http://viness.narod.ru. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Gas Chromatography, References
- Symbols used in this document:
AE Appearance energy ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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