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Experimental data for CH2CCl2 (Ethene, 1,1-dichloro-)

22 02 02 11 45
Other names
1,1-DCE; 1,1-Dichloroethene; 1,1-Dichloroethylene; Chlorure de vinylidene; Ethene, 1,1-dichloro-; Ethylene, 1,1-dichloro-; Sconatex; VDC; Vinylidine chloride; Vinylidene dichloride; Vinylidene chloride;
INChI INChIKey SMILES IUPAC name
InChI=1S/C2H2Cl2/c1-2(3)4/h1H2 LGXVIGDEPROXKC-UHFFFAOYSA-N ClC(Cl)=C 1,1-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 2.40 3.00 kJ mol-1 2002Man:123
Hfg(0K) enthalpy of formation   3.00 kJ mol-1 2002Man:123
Entropy (298.15K) entropy 288.16   J K-1 mol-1 Gurvich
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 13.77   kJ mol-1 Gurvich
Heat Capacity (298.15K) heat capacity 67.12   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 3035   Shim      
2 A1 1627   Shim      
3 A1 1400   Shim      
4 A1 603   Shim      
5 A1 299   Shim      
6 A2 686   Shim      
7 B1 875   Shim      
8 B1 460   Shim      
9 B2 3130   Shim      
10 B2 1095   Shim      
11 B2 800   Shim      
12 B2 372   Shim      

vibrational zero-point energy: 7191.0 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for CH2CCl2 (Ethene, 1,1-dichloro-).
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
0.24907 0.11379 0.07802 1966Herzberg

Calculated rotational constants for CH2CCl2 (Ethene, 1,1-dichloro-).
Product of moments of inertia moments of inertia
2166497amu3Å6   9.920330245827E-114gm3 cm6
Geometric Data
picture of Ethene, 1,1-dichloro-

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
rCC 1.324   1 2 1974sve/kov
rCCl 1.710   2 5 1974sve/kov
rCH 1.070   1 3 1974sve/kov
aClCCl 114.5 5 2 6 1974sve/kov
aHCH 120 3 1 4 1974sve/kov
aCCCl 122.75 1 2 5 1974sve/kov by symmetry
aHCC 120 2 1 3 1974sve/kov by symmetry

Cartesians
Atom x (Å) y (Å) z (Å)
C1 0.0000 0.0000 1.7363
C2 0.0000 0.0000 0.4123
H3 0.0000 0.9266 2.2713
H4 0.0000 -0.9266 2.2713
Cl5 0.0000 1.4382 -0.5128
Cl6 0.0000 -1.4382 -0.5128

Atom - Atom Distances bond lengths
Distances in Å
  C1 C2 H3 H4 Cl5 Cl6
C1   1.32401.07001.07002.66962.6696
C2 1.3240   2.07722.07721.71001.7100
H3 1.07002.0772   1.85332.83073.6529
H4 1.07002.07721.8533   3.65292.8307
Cl5 2.66961.71002.83073.6529   2.8764
Cl6 2.66961.71003.65292.83072.8764  

Calculated geometries for CH2CCl2 (Ethene, 1,1-dichloro-).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
C1 C2 Cl5 122.750 C1 C2 Cl6 122.750
C2 C1 H3 120.000 C2 C1 H4 120.000
H3 C1 H4 120.000 Cl5 C2 Cl6 114.500

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 H4
C2 Cl5
C2 Cl6
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A1
41900 1 1966Herzberg

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
9.810 0.040 10.000   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       1.340 1962How/Fly:650-652 MW μ0 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 CH2CCl2 (Ethene, 1,1-dichloro-).
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 CH2CCl2 (Ethene, 1,1-dichloro-).
Electric dipole polarizability (Å3) polarizability
alpha unc. Reference
7.830   1998Gus/Rui:163

Calculated electric dipole polarizability for CH2CCl2 (Ethene, 1,1-dichloro-).

References
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squib reference DOI
1962How/Fly:650-652 JA Howe, WH Flygare "Strong Field Stark Effect" J. Chem. Phys. 36, 650 (1962) 10.1063/1.1732587
1966Herzberg Herzberg, G., Electronic spectra and electronic structure of polyatomic molecules,Van Nostrand,New York, 1966  
1974sve/kov L.M. Sverdlov, M. A. Kovner, E. P. Krainov, "Vibrational Spectra of Polyatomic Molecules" Wiley, New York 1974  
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  
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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