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II.A.3. (XII.A.1.)

Listing of experimental geometry data for C2H2F2 (Ethene, 1,2-difluoro-, (Z)-)

Rotational Constants (cm-1)
See section I.F.4 to change rotational constant units
0.70393 0.19782 0.15418
Rotational Constants from 1961Lau:291
Calculated rotational constants for C2H2F2 (Ethene, 1,2-difluoro-, (Z)-).

Point Group C2v

Internal coordinates (distances (r) in Å) (angles (a) in degrees) (dihedrals (d) in degrees)
Description Value Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4
rCC 1.324 1 2 1976Hellwege(II/7)
rCH 1.089 1 5 1976Hellwege(II/7)
rCF 1.335 1 3 1976Hellwege(II/7)
aCCF 122.1 1 2 4 1976Hellwege(II/7)
aHCC 124 1 2 6 1976Hellwege(II/7)
picture of Ethene, 1,2-difluoro-, (Z)-

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

Atom x (Å) y (Å) z (Å)
C1 0.0000 0.6619 0.6428
C2 0.0000 -0.6619 0.6428
F3 0.0000 1.3714 -0.4880
F4 0.0000 -1.3714 -0.4880
H5 0.0000 1.2691 1.5465
H6 0.0000 -1.2691 -1.5465

Atom - Atom Distances (Å)
  C1 C2 F3 F4 H5 H6

Calculated geometries for C2H2F2 (Ethene, 1,2-difluoro-, (Z)-).

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squib reference DOI
1961Lau:291 VW Laurie "Microwave Spectrum of cis-Difluoroethylene. Structures and Dipole Moment of Fluoroethylenes" J. Chem. Phys. 34, 291, 1961 10.1063/1.1731582
1976Hellwege(II/7) Hellwege, KH and AM Hellwege (ed.). Landolt-Bornstein: Group II: Atomic and Molecular Physics Volume 7: Structure Data of Free Polyatomic Molecules. Springer-Verlag. Berlin. 1976.  

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