Cyclopropane, 1,1-dimethyl-
- Formula: C5H10
- Molecular weight: 70.1329
- IUPAC Standard InChI: InChI=1S/C5H10/c1-5(2)3-4-5/h3-4H2,1-2H3
- IUPAC Standard InChIKey: PBIJFSCPEFQXBB-UHFFFAOYSA-N
- CAS Registry Number: 1630-94-0
- 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. - Other names: Gem-Dimethylcyclopropane; 1,1-Dimethylcyclopropane
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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
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -8.2 ± 1.2 | kJ/mol | Ccb | Good, Moore, et al., 1974 | ALS |
Constant pressure heat capacity of gas
| Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 34.53 | 50. | Thermodynamics Research Center, 1997 | p=1 bar. Selected values are lower than other statistically calculated values [ Kabo G.Y., 1973] up to 2.2 and 1.1 J/mol*K for S(T) and Cp(T), respectively.; GT |
| 46.12 | 100. | ||
| 60.44 | 150. | ||
| 74.83 | 200. | ||
| 98.04 | 273.15 | ||
| 106.37 | 298.15 | ||
| 106.99 | 300. | ||
| 139.28 | 400. | ||
| 167.17 | 500. | ||
| 190.30 | 600. | ||
| 209.64 | 700. | ||
| 226.09 | 800. | ||
| 240.23 | 900. | ||
| 252.45 | 1000. | ||
| 263.04 | 1100. | ||
| 272.23 | 1200. | ||
| 280.21 | 1300. | ||
| 287.14 | 1400. | ||
| 293.19 | 1500. | ||
| 305.2 | 1750. | ||
| 313.9 | 2000. | ||
| 320.4 | 2250. | ||
| 325.3 | 2500. | ||
| 329.0 | 2750. | ||
| 332.0 | 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.
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]
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]
Kabo G.Y., 1973
Kabo G.Y.,
Thermodynamic properties of some hydrocarbons containing three-membered rings,
Vestn. Beloruss. Univ., Ser. 2, 1973, 3-6. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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