3-Pentanol, 2,2,4,4-tetramethyl-
- Formula: C9H20O
- Molecular weight: 144.2545
- IUPAC Standard InChIKey: WFJSIIHYYLHRHB-UHFFFAOYSA-N
- CAS Registry Number: 14609-79-1
- 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: 2,2,4,4-Tetramethylpentan-3-ol
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Phase change data
Go To: Top, 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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 439. ± 3. | K | AVG | N/A | Average of 7 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 325. | K | N/A | Petrov, Kao, et al., 1960 | Uncertainty assigned by TRC = 3. K; TRC |
Tfus | 325. | K | N/A | Petrov, Sokolova, et al., 1960 | Uncertainty assigned by TRC = 3. K; TRC |
Tfus | 320.15 | K | N/A | Zeiss and Tsutsui, 1953 | Uncertainty assigned by TRC = 2. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 15.0 ± 0.2 | kcal/mol | N/A | Verevkin, 1998 | AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
1.7 | 322. | Domalski and Hearing, 1996 | AC |
Enthalpy of phase transition
ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.4541 | 263. | crystaline, II | crystaline, I | Bator, Jakubas, et al., 1990 | DH |
1.745 | 322. | crystaline, I | liquid | Bator, Jakubas, et al., 1990 | DH |
Entropy of phase transition
ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
1.68 | 263. | crystaline, II | crystaline, I | Bator, Jakubas, et al., 1990 | DH |
5.45 | 322. | crystaline, I | liquid | Bator, Jakubas, et al., 1990 | DH |
Gas phase ion energetics data
Go To: Top, Phase change 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: John E. Bartmess
De-protonation reactions
C9H19O- + =
By formula: C9H19O- + H+ = C9H20O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 367.6 ± 2.1 | kcal/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° | 361.0 ± 2.0 | kcal/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale |
References
Go To: Top, Phase change data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Petrov, Kao, et al., 1960
Petrov, A.D.; Kao, C.L.; Semenkin, V.M.,
Reaction of 2,2,3,3-Tetramethyl-4-pentanone with Alkyl Lithiums,
Zh. Obshch. Khim., 1960, 30, 363-9. [all data]
Petrov, Sokolova, et al., 1960
Petrov, A.D.; Sokolova, E.B.; Kao, C.L.,
Reaction of tert-Butyllithium with Esters of Acids,
Zh. Obshch. Khim., 1960, 30, 1107. [all data]
Zeiss and Tsutsui, 1953
Zeiss, H.H.; Tsutsui, M.,
The Carbon-Oxygen Absorption Band in the Infrared Spectra of Alcohols,
J. Am. Chem. Soc., 1953, 75, 897. [all data]
Verevkin, 1998
Verevkin, Sergey P.,
Structural Chemistry, 1998, 9, 5, 375-382, https://doi.org/10.1023/A:1022471228499
. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Bator, Jakubas, et al., 1990
Bator, G.; Jakubas, R.; Malarski, Z.; GAlewski, Z.; Matuszewski, J.; Miniewicz, A.,
Phase transition in solid 2,2,4,4-tetramethylpentan-3-ol (TMP),
J. Mol. Struct., 1990, 240, 39-46. [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, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔfusH Enthalpy of fusion ΔrG° Free energy of reaction 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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