Cyclobutane, methylene-
- Formula: C5H8
- Molecular weight: 68.1170
- IUPAC Standard InChI: InChI=1S/C5H8/c1-5-3-2-4-5/h1-4H2
- IUPAC Standard InChIKey: QIRVGKYPAOQVNP-UHFFFAOYSA-N
- CAS Registry Number: 1120-56-5
- 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. - Species with the same structure:
- Other names: Methylenecyclobutane
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Gas 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
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 106. | kJ/mol | Chyd | Roth, Adamczak, et al., 1991 | ALS |
| ΔfH°gas | 121.5 ± 0.71 | kJ/mol | Ccb | Good, Moore, et al., 1974 | ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas | 298.9 ± 1.0 | J/mol*K | N/A | Finke H.L., 1981 | Close value of S(298.15 K)=298.6(1.7) J/mol*K was calculated by [ Andreevskii D.N., 1983] using other value for the entropy of the liquid state.; GT |
Constant pressure heat capacity of gas
| Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 87.40 | 298.15 | Andreevskii D.N., 1976 | GT |
| 87.99 | 300. | ||
| 118.41 | 400. | ||
| 144.98 | 500. | ||
| 166.90 | 600. | ||
| 185.06 | 700. | ||
| 200.29 | 800. | ||
| 213.22 | 900. | ||
| 224.26 | 1000. |
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.
Roth, Adamczak, et al., 1991
Roth, W.R.; Adamczak, O.; Breuckmann, R.; Lennartz, H.-W.; Boese, R.,
Die Berechnung von Resonanzenergien; das MM2ERW-Kraftfeld,
Chem. Ber., 1991, 124, 2499-2521. [all data]
Good, Moore, et al., 1974
Good, W.D.; Moore, R.T.; Osborn, A.G.; Douslin, D.R.,
The enthalpies of formation of ethylcyclobutane, methylenecyclobutane, and 1,1-dimethylcyclopropane,
J. Chem. Thermodyn., 1974, 6, 303-310. [all data]
Finke H.L., 1981
Finke H.L.,
Thermodynamic properties of cyclopropylamine, cyclopentylamine, and methylenecyclobutane,
J. Chem. Thermodyn., 1981, 13, 345-355. [all data]
Andreevskii D.N., 1983
Andreevskii D.N.,
Value of the S(298.15) entropy of methylenecyclobutane in the gaseous state,
Zh. Fiz. Khim., 1983, 57, 2109. [all data]
Andreevskii D.N., 1976
Andreevskii D.N.,
The similar structures method in thermodynamics of C3-C5 methylenecycloalkanes,
Zh. Strukt. Khim., 1976, 17, 51-57. [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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