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Experimental data for CHClCHCl (Ethene, 1,2-dichloro-, (Z)-)

22 02 02 11 45
Other names
1,cis-2-Dichloroethene; 1,2-cis-Dichloroethene; 1,2-cis-Dichloroethylene; (Z)-1,2-Dichloroethene; (Z)-1,2-Dichloroethylene; (Z)-CHCl=CHCl; Acetylene dichloride, cis-; cis-1,2-Dichloroethene; cis-1,2-Dichloroethylene; cis-Di-1,2-Chloroethylene; cis-Dichloroethylene; cis-Dichloromethylene; Dichloroethylene, cis-; Ethene, 1,2-dichloro-, (Z)-; Ethylene, 1,2-dichloro-, (Z)-; 1,2-dichloroethylene;
INChI INChIKey SMILES IUPAC name
InChI=1S/C2H2Cl2/c3-1-2-4/h1-2H/b2-1- KFUSEUYYWQURPO-UPHRSURJSA-N Cl/C=C\Cl (Z)-1,2-Dichloroethene
State Conformation
1A1 C2V
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Hfg(298.15K) enthalpy of formation -3.00 2.00 kJ mol-1 2002Man:123
Hfg(0K) enthalpy of formation   2.00 kJ mol-1 2002Man:123
Entropy (298.15K) entropy 289.57   J K-1 mol-1 Gurvich
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 13.74   kJ mol-1 Gurvich
Heat Capacity (298.15K) heat capacity 64.89   J K-1 mol-1 Gurvich
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference
1 A1 3077   Shim      
2 A1 1587   Shim      
3 A1 1179   Shim      
4 A1 711   Shim      
5 A1 173   Shim      
6 A2 876   Shim      
7 A2 406   Shim      
8 B1 697   Shim      
9 B2 3072   Shim      
10 B2 1303   Shim      
11 B2 857   Shim      
12 B2 571   Shim      

vibrational zero-point energy: 7254.5 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for CHClCHCl (Ethene, 1,2-dichloro-, (Z)-).
Gas-phase IR spectra can be found in the NIST Chemistry Webbook here.
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
0.38421 0.08490 0.06947 1966Herzberg

Calculated rotational constants for CHClCHCl (Ethene, 1,2-dichloro-, (Z)-).
Product of moments of inertia moments of inertia
2114219amu3Å6   9.680950747611E-114gm3 cm6
Geometric Data
picture of Ethene, 1,2-dichloro-, (Z)-

Point Group C2v


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4
rCH 1.101   1 3 1992Kuchitsu(II/21)
rCC 1.317   1 2 1992Kuchitsu(II/21)
rCCl 1.717   1 5 1992Kuchitsu(II/21)
aHCC 123.18 1 2 4 1992Kuchitsu(II/21)
aCCCl 124.22 1 2 6 1992Kuchitsu(II/21)
aHCCl 112.55 3 1 5 1992Kuchitsu(II/21)

Cartesians
Atom x (Å) y (Å) z (Å)
C1 0.0000 0.6587 0.9674
C2 0.0000 -0.6587 0.9674
H3 0.0000 1.2610 1.8886
H4 0.0000 -1.2610 1.8886
Cl5 0.0000 1.6244 -0.4525
Cl6 0.0000 -1.6244 -0.4525

Atom - Atom Distances bond lengths
Distances in Å
  C1 C2 H3 H4 Cl5 Cl6
C1   1.31731.10072.12931.71722.6886
C2 1.3173   2.12931.10072.68861.7172
H3 1.10072.1293   2.52212.36923.7157
H4 2.12931.10072.5221   3.71572.3692
Cl5 1.71722.68862.36923.7157   3.2487
Cl6 2.68861.71723.71572.36923.2487  

Calculated geometries for CHClCHCl (Ethene, 1,2-dichloro-, (Z)-).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
C1 C2 H4 123.180 C1 C2 Cl6 124.220
C2 C1 H3 123.180 C2 C1 Cl5 124.220
H3 C1 Cl5 112.600 H4 C2 Cl6 112.600

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-C 2
C=C 1
C-Cl 2

Connectivity
Atom 1 Atom 2
C1 C2
C1 H3
C1 Cl5
C2 H4
C2 Cl6
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A1
42300 1 1966Herzberg

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
9.660 0.010 9.800   webbook
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 1A1 C2v True       1.900 NSRDS-NBS10 dielectric C2v 1 2
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for CHClCHCl (Ethene, 1,2-dichloro-, (Z)-).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 1A1 C2v True       C2v 1 2

Calculated electric quadrupole moments for CHClCHCl (Ethene, 1,2-dichloro-, (Z)-).
Electric dipole polarizability (Å3) polarizability
alpha unc. Reference
8.030   1998Gus/Rui:163

Calculated electric dipole polarizability for CHClCHCl (Ethene, 1,2-dichloro-, (Z)-).

References
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squib reference DOI
1966Herzberg Herzberg, G., Electronic spectra and electronic structure of polyatomic molecules,Van Nostrand,New York, 1966  
1992Kuchitsu(II/21) Kuchitsu (ed.), Landolt-Bornstein: Group II: Atomic and Molecular Physics Volume 21: Structure Data of Free Polyatomic Molecules. Springer-Verlag, Berlin, 1992.  
1998Gus/Rui:163 M Gussoni, R Rui, G Zerbi "Electronic and relaxation contribution to linear molecular polarizability. An analysis of the experimental values" J. Mol. Struct. 447 (1998) 163-215 10.1016/S0022-2860(97)00292-5
2002Man:123 JA Manion "Evaluated Enthalpies of Formation of the Stable Closed Shell C1 and C2 Chlorinated Hydrocarbons" J. Phys. Chem. Ref. Data 31(1), 123-172, 2002 10.1063/1.1420703
Gurvich Gurvich, L.V.; Veyts, I. V.; Alcock, C. B., Thermodynamic Properties of Individual Substances, Fouth Edition, Hemisphere Pub. Co., New York, 1989  
NSRDS-NBS10 R. D. Nelson Jr., D. R. Lide, A. A. Maryott "Selected Values of electric dipole moments for molecules in the gas phase" NSRDS-NBS10, 1967 10.6028/NBS.NSRDS.10
Shim Shimanouchi, T. , Tables of Molecular Vibrational Frequencies, Consolidated Volu 10.6028/NBS.NSRDS.39
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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