- Formula: C2Cl2
- Molecular weight: 94.927
- IUPAC Standard InChI:
- Download the identifier in a file.
- IUPAC Standard InChIKey: ZMJOVJSTYLQINE-UHFFFAOYSA-N
- CAS Registry Number: 7572-29-4
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
- Species with the same structure:
- Other names: Acetylene, dichloro-; Dichloroacetylene; Dichloroethyne; ClC«equiv»CCl; C2Cl2
- Information on this page:
- Other data available:
- Data at other public NIST sites:
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Reaction 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:
DRB - Donald R. Burgess, Jr.
|fH°gas||209.62||kJ/mol||Review||Chase, 1998||Data last reviewed in December, 1968|
|fH°gas||227. ± 14.||kJ/mol||Review||Manion, 2002||estimate based on a diverse set of quantum calculations; DRB|
|S°gas,1 bar||272.03||J/mol*K||Review||Chase, 1998||Data last reviewed in December, 1968|
Gas Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
Cp = heat capacity (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
|Temperature (K)||298. - 1200.||1200. - 6000.|
|Reference||Chase, 1998||Chase, 1998|
|Comment||Data last reviewed in December, 1968||Data last reviewed in December, 1968|
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, References, Notes
Data compiled by: Donald R. Burgess, Jr.
|fH°liquid||199. ± 14.||kJ/mol||Review||Manion, 2002||derived from recommended «DELTA»fHgas° and «DELTA»vapH°|
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, References, Notes
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.
By formula: C2H2Cl2 = H2 + C2Cl2
|rH°||16.||kJ/mol||Kin||Laursen and Pimentel, 1989||gas phase; Photolysis|
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Notes
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Manion, J.A., Evaluated Enthalpies of Formation of the Stable Closed Shell C1 and C2 Chlorinated Hydrocarbons, J. Phys. Chem. Ref. Data, 2002, 31, 1, 123-172, https://doi.org/10.1063/1.1420703 . [all data]
Laursen and Pimentel, 1989
Laursen, S.L.; Pimentel, G.C., Matrix-induced intersystem crossing in the photochemistry of the 1,2-dichloroethenes, J. Phys. Chem., 1989, 93, 2328-2333. [all data]
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) fH°gas Enthalpy of formation of gas at standard conditions fH°liquid Enthalpy of formation of liquid at standard conditions rH° Enthalpy of reaction at standard conditions
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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