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
The 3d structure may be viewed using Java or Javascript. - Isotopologues:
- Other names: Tetramethylene; UN 2601
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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 |
|---|---|---|---|---|---|
| ΔcH°liquid | -2720.4 ± 0.5 | kJ/mol | Ccb | Kaarsemaker and Coops, 1952 | Corresponding ΔfHºliquid = 3.0 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| ΔcH°liquid | -2720.5 ± 0.4 | kJ/mol | Ccb | Coops and Kaarsemaker, 1950 | Corresponding ΔfHºliquid = 3.1 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid | 175.15 | J/mol*K | N/A | Rathjens and Gwinn, 1953 | DH |
Constant pressure heat capacity of liquid
| Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 106.32 | 285. | Rathjens and Gwinn, 1953 | T = 15 to 285 K.; 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.
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, 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 - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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