Cyclobutane
- Formula: C4H8
- Molecular weight: 56.1063
- IUPAC Standard InChI: InChI=1S/C4H8/c1-2-4-3-1/h1-4H2
- IUPAC Standard InChIKey: PMPVIKIVABFJJI-UHFFFAOYSA-N
- CAS Registry Number: 287-23-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
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- Other names: Tetramethylene; UN 2601
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry 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: Glushko Thermocenter, Russian Academy of Sciences, Moscow
Constant pressure heat capacity of gas
| Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 8.162 | 50. | Dorofeeva O.V., 1986 | Discrepancies between selected values and those calculated earlier [ Rathjens G.W., 1953] increase as the temperature increases and amount to 5.4 and 3.1 J/mol*K for S(1500 K) and Cp(1500 K), respectively. |
| 9.128 | 100. | ||
| 10.11 | 150. | ||
| 11.67 | 200. | ||
| 15.35 | 273.15 | ||
| 16.86 ± 0.36 | 298.15 | ||
| 16.98 | 300. | ||
| 23.34 | 400. | ||
| 29.166 | 500. | ||
| 34.092 | 600. | ||
| 38.222 | 700. | ||
| 41.711 | 800. | ||
| 44.692 | 900. | ||
| 47.244 | 1000. | ||
| 49.438 | 1100. | ||
| 51.329 | 1200. | ||
| 52.961 | 1300. | ||
| 54.374 | 1400. | ||
| 55.598 | 1500. |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry 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:
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 |
|---|---|---|---|---|---|
| ΔcH°liquid | -650.2 ± 0.1 | kcal/mol | Ccb | Kaarsemaker and Coops, 1952 | Corresponding ΔfHºliquid = 0.72 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
| ΔcH°liquid | -650.22 ± 0.1 | kcal/mol | Ccb | Coops and Kaarsemaker, 1950 | Corresponding ΔfHºliquid = 0.74 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid | 41.862 | cal/mol*K | N/A | Rathjens and Gwinn, 1953 | DH |
Constant pressure heat capacity of liquid
| Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 25.411 | 285. | Rathjens and Gwinn, 1953 | T = 15 to 285 K.; DH |
References
Go To: Top, Gas phase thermochemistry data, 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.
Dorofeeva O.V., 1986
Dorofeeva O.V.,
Thermodynamic properties of twenty-one monocyclic hydrocarbons,
J. Phys. Chem. Ref. Data, 1986, 15, 437-464. [all data]
Rathjens G.W., 1953
Rathjens G.W., Jr.,
Infrared absorption spectra, structure and thermodynamic properties of cyclobutane,
J. Am. Chem. Soc., 1953, 75, 5634-5642. [all data]
Kaarsemaker and Coops, 1952
Kaarsemaker, S.; Coops, J.,
Thermal quantities of some cycloparaffins. Part III. Results of measurements,
Rec. Trav. Chim. Pays/Bas, 1952, 71, 261. [all data]
Coops and Kaarsemaker, 1950
Coops, J.; Kaarsemaker, SJ.,
Heat of combustion of cyclobutane,
Recl. Trav. Chim. Pays-Bas, 1950, 69, 1364. [all data]
Rathjens and Gwinn, 1953
Rathjens, G.W., Jr.; Gwinn, W.D.,
Heat capacities and entropy of cyclobutane,
J. Am. Chem. Soc., 1953, 75, 5629-5633. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas 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 - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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