Cyclopentane, ethyl-
- Formula: C7H14
- Molecular weight: 98.1861
- IUPAC Standard InChIKey: IFTRQJLVEBNKJK-UHFFFAOYSA-N
- CAS Registry Number: 1640-89-7
- 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: Ethylcyclopentane
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Gas phase thermochemistry data
Go To: Top, 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -127.1 ± 1.0 | kJ/mol | Ccb | Prosen, Johnson, et al., 1946 | ALS |
ΔfH°gas | -129.4 | kJ/mol | N/A | Moore, Renquist, et al., 1940 | Value computed using ΔfHliquid° value of -165.8±1.6 kj/mol from Moore, Renquist, et al., 1940 and ΔvapH° value of 36.4 kj/mol from Prosen, Johnson, et al., 1946.; DRB |
Quantity | Value | Units | Method | Reference | Comment |
S°gas | 378.32 | J/mol*K | N/A | Stull D.R., 1969 | This value was obtained using low temperature data of [ Gross M.E., 1953].; GT |
Constant pressure heat capacity of gas
Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
49.48 | 50. | Thermodynamics Research Center, 1997 | p=1 bar. Selected values are in close agreement with those calculated by a method of increments [ Kilpatrick J.E., 1947].; GT |
65.17 | 100. | ||
77.76 | 150. | ||
92.61 | 200. | ||
122.1 | 273.15 | ||
133.6 | 298.15 | ||
134.5 | 300. | ||
182.0 | 400. | ||
224.8 | 500. | ||
260.6 | 600. | ||
290.5 | 700. | ||
315.7 | 800. | ||
337.1 | 900. | ||
355.4 | 1000. | ||
371.2 | 1100. | ||
384.7 | 1200. | ||
396.4 | 1300. | ||
406.5 | 1400. | ||
415.2 | 1500. | ||
432.5 | 1750. | ||
445.0 | 2000. | ||
454.2 | 2250. | ||
461.1 | 2500. | ||
466.5 | 2750. | ||
470.7 | 3000. |
References
Go To: Top, Gas phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Prosen, Johnson, et al., 1946
Prosen, E.J.; Johnson, W.H.; Rossini, F.D.,
Heats of formation and combustion of the normal alkylcyclopentanes and cyclohexanes and the increment per CH2 group for several homologous series of hydrocarbons,
J. Res. NBS, 1946, 37, 51-56. [all data]
Moore, Renquist, et al., 1940
Moore, G.E.; Renquist, M.L.; Parks, G.S.,
Thermal data on organic compounds. XX. Modern combustion data for two methylnonanes, methyl ethyl ketone, thiophene and six cycloparaffins,
J. Am. Chem. Soc., 1940, 62, 1505-1507. [all data]
Stull D.R., 1969
Stull D.R., Jr.,
The Chemical Thermodynamics of Organic Compounds. Wiley, New York, 1969. [all data]
Gross M.E., 1953
Gross M.E.,
Low-temperature thermal data for some C7H14 alkylcyclopentanes,
J. Am. Chem. Soc., 1953, 75, 2801-2804. [all data]
Thermodynamics Research Center, 1997
Thermodynamics Research Center,
Selected Values of Properties of Chemical Compounds., Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1997. [all data]
Kilpatrick J.E., 1947
Kilpatrick J.E.,
Heats, equilibrium constants, and free energies of formation of the alkylcyclopentanes and alkylcyclohexanes,
J. Res. Nat. Bur. Stand., 1947, 39, 523-543. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas S°gas Entropy of gas at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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