Cyclopropane, 1,2-dimethyl-, cis-
- Formula: C5H10
- Molecular weight: 70.1329
- IUPAC Standard InChIKey: VKJLDXGFBJBTRQ-SYDPRGILSA-N
- CAS Registry Number: 930-18-7
- 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. - Stereoisomers:
- Other names: cis-1,2-Dimethylcyclopropane; 1,cis-2-Dimethylcyclopropane; c-1,2-Dimethylcyclopropane
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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 by: Glushko Thermocenter, Russian Academy of Sciences, Moscow
Constant pressure heat capacity of gas
Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
35.91 | 50. | Thermodynamics Research Center, 1997 | p=1 bar. |
49.40 | 100. | ||
62.47 | 150. | ||
74.98 | 200. | ||
95.47 | 273.15 | ||
103.05 | 298.15 | ||
103.62 | 300. | ||
134.22 | 400. | ||
161.86 | 500. | ||
185.36 | 600. | ||
205.24 | 700. | ||
222.23 | 800. | ||
236.86 | 900. | ||
249.50 | 1000. | ||
260.45 | 1100. | ||
269.95 | 1200. | ||
278.18 | 1300. | ||
285.34 | 1400. | ||
291.57 | 1500. | ||
303.9 | 1750. | ||
312.9 | 2000. | ||
319.6 | 2250. | ||
324.6 | 2500. | ||
328.4 | 2750. | ||
331.4 | 3000. |
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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -26.3 ± 0.67 | kJ/mol | Ccb | Good, 1971 | |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -3370.4 ± 0.59 | kJ/mol | Ccb | Good, 1971 | Corresponding ΔfHºliquid = -26.3 kJ/mol (simple calculation by NIST; no Washburn corrections) |
Phase change 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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 309. ± 3. | K | AVG | N/A | Average of 7 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 132.2 ± 0.1 | K | AVG | N/A | Average of 10 out of 11 values; Individual data points |
Reaction 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -160.3 ± 0.50 | kJ/mol | Chyd | Turner, Goebel, et al., 1968 | liquid phase; solvent: Acetic acid |
ΔrH° | -159. ± 4.2 | kJ/mol | Chyd | Chesick, 1963 | liquid phase; solvent: Acetic acid |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
Good, 1971
Good, W.D.,
The enthalpies of combustion and formation of some alkyl cyclopropanes,
J. Chem. Thermodyn., 1971, 3, 539-546. [all data]
Turner, Goebel, et al., 1968
Turner, R.B.; Goebel, P.; Mallon, B.J.; Doering, W.E.; Coburn, J.F., Jr.; Pomerantz, M.,
Heats of hydrogenation. VIII. Compounds with three- and four-membered rings,
J. Am. Chem. Soc., 1968, 90, 4315-4322. [all data]
Chesick, 1963
Chesick, J.P.,
Kinetics of the thermal interconversion of 2-methylmethylenecyclopropane and ethylidenecyclopropane,
J. Am. Chem. Soc., 1963, 85, 2720-2723. [all data]
Notes
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- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas Tboil Boiling point Tfus Fusion (melting) point ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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