Cyclopentane, 1,3-dimethyl-, trans-
- Formula: C7H14
- Molecular weight: 98.1861
- IUPAC Standard InChI: InChI=1S/C7H14/c1-6-3-4-7(2)5-6/h6-7H,3-5H2,1-2H3/t6-,7-/m0/s1
- IUPAC Standard InChIKey: XAZKFISIRYLAEE-BQBZGAKWSA-N
- CAS Registry Number: 1759-58-6
- 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. - Stereoisomers:
- Other names: trans-1,3-Dimethylcyclopentane; 1,trans-3-Dimethylcyclopentane; 1,3-Dimethylcyclopentane, trans; t-1,3-Dimethylcyclopentane
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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 | -40.68 ± 0.28 | kcal/mol | Cm | Johnson, Prosen, et al., 1949 | ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -1095.90 ± 0.26 | kcal/mol | Cm | Johnson, Prosen, et al., 1949 | Corresponding ΔfHºliquid = -40.66 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid | 64.900 | cal/mol*K | N/A | Gross, Oliver, et al., 1953 | DH |
Constant pressure heat capacity of liquid
| Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 45.619 | 304.03 | Gross, Oliver, et al., 1953 | T = 13 to 300 K. Unsmoothed experimental datum.; DH |
References
Go To: Top, Condensed phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Johnson, Prosen, et al., 1949
Johnson, W.H.; Prosen, E.J.; Rossini, F.D.,
Heats of combustion and isomerization of the six C7H14 alkylcyclopentanes,
J. Res. NBS, 1949, 42, 251-255. [all data]
Gross, Oliver, et al., 1953
Gross, M.E.; Oliver, G.D.; Huffman, H.M.,
Low-temperature thermal data for some C7H14 alkylcyclopentanes,
J. Am. Chem. Soc., 1953, 75, 2801-2804. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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