1,4-Butanediol
- Formula: C4H10O2
- Molecular weight: 90.1210
- IUPAC Standard InChIKey: WERYXYBDKMZEQL-UHFFFAOYSA-N
- CAS Registry Number: 110-63-4
- 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: Diol 14B; Sucol B; Tetramethylene glycol; 1,4-Butylene glycol; 1,4-Dihydroxybutane; 1,4-Tetramethylene glycol; Butane-1,4-diol; Butanediol; 1,4-BD; Tetramethylene 1,4-diol; BDO; Butylene glycol; Dabco BDO; Butane diol-1,4; NSC 406696
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Gas phase thermochemistry data
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), 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 | -101.8 ± 1.4 | kcal/mol | Ccr | Knauth and Sabbah, 1990 | see Knauth and Sabbah, 1989 |
ΔfH°gas | -102.0 ± 0.6 | kcal/mol | Ccb | Gardner and Hussain, 1972 |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Mass spectrum (electron ionization), References, Notes
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
MM - Michael M. Meot-Ner (Mautner)
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 218.8 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 204.3 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Proton affinity at 298K
Proton affinity (kcal/mol) | Reference | Comment |
---|---|---|
>209.1 | Bouchoux, Buisson, et al., 2003 | MM |
>208.3 | Bouchoux, Buisson, et al., 2003 | MM |
>211.4 ± 0.1 | Bouchoux, Buisson, et al., 2003 | MM |
Gas basicity at 298K
Gas basicity (review) (kcal/mol) | Reference | Comment |
---|---|---|
201.6 | Bouchoux, Buisson, et al., 2003 | MM |
201.1 | Bouchoux, Buisson, et al., 2003 | MM |
203.8 ± 0.1 | Bouchoux, Buisson, et al., 2003 | MM |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C3H6+ | 11.1 ± 0.1 | H2O+CH2O | EI | Holmes, Mommers, et al., 1984 | LBLHLM |
C3H8O+ | 10.70 ± 0.05 | CH2O | EI | Holmes, Mommers, et al., 1984 | LBLHLM |
De-protonation reactions
C4H9O2- + =
By formula: C4H9O2- + H+ = C4H10O2
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 356.1 ± 2.5 | kcal/mol | G+TS | Crowder and Bartmess, 1993 | gas phase; ΔGacid at 80°C; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 354.6 ± 2.0 | kcal/mol | IMRE | Crowder and Bartmess, 1993 | gas phase; ΔGacid at 80°C; B |
ΔrG° | 360.20 ± 0.30 | kcal/mol | CIDC | Houriet, Tabet, et al., 1984 | gas phase; value altered from reference due to change in acidity scale; B |
Mass spectrum (electron ionization)
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
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 | NIST Mass Spectrometry Data Center, 1998. |
NIST MS number | 291303 |
References
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, 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.
Knauth and Sabbah, 1990
Knauth, P.; Sabbah, R.,
Energetics of intra- and intermolecular bonds in ω-alkanediols (II) Thermochemical study of 1,2-ethanediol, 1,3-propanediol, 1,4-butanediol, and 1,5-pentanediol at 298.15K,
Struct. Chem., 1990, 1, 43-46. [all data]
Knauth and Sabbah, 1989
Knauth, P.; Sabbah, R.,
Combustion calorimetry on milligram samples of liquid substances with a CRMT rocking bomb calorimeter. Application to the study of ω-alkanediol at 298.15 K,
J. Chem. Thermodyn., 1989, 21, 203-210. [all data]
Gardner and Hussain, 1972
Gardner, P.J.; Hussain, K.S.,
The standard enthalpies of formation of some aliphatic diols,
J. Chem. Thermodyn., 1972, 4, 819-827. [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]
Bouchoux, Buisson, et al., 2003
Bouchoux, G.; Buisson, D.A.; Bourcier, S.; Sablier, M.,
Application of the kinetic method to bifunctional bases. ESI tandem quadrupole experiments,
Int. J. Mass Spectrom., 2003, 228, 1035. [all data]
Holmes, Mommers, et al., 1984
Holmes, J.L.; Mommers, A.A.; Szulejko, J.E.; Terlouw, J.K.,
Two new stable [C3H8O]+ isomers: The radical cations [C3H6OH2]+,
J. Chem. Soc., Chem. Commun., 1984, 165. [all data]
Crowder and Bartmess, 1993
Crowder, C.; Bartmess, J.,
The Gas Phase Acidities of Diols,
J. Am. Soc. Mass Spectrom., 1993, 4, 9, 723, https://doi.org/10.1016/1044-0305(93)80051-Y
. [all data]
Houriet, Tabet, et al., 1984
Houriet, R.; Tabet, J.-C.; Tchapla, A.,
Gas-phase Acidities of Aliphatic and Cyclic Diols,
Spectros. Int. J., (1984),, 1984, 3, 132.. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), References
- Symbols used in this document:
AE Appearance energy ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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