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

Listing of experimental geometry data for C2H4F2 (1,2-difluoroethane)

No experimental rotational constants available.
Calculated rotational constants for C2H4F2 (1,2-difluoroethane).

Point Group C2

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 1.493 1 2 1998Kuc r0
rCF 1.390 1 3 1998Kuc
rCH 1.099 1 6 1998Kuc gauche to F on other C
rCH 1.093 1 5 1998Kuc trans to F on other C
aCCF 110.6 1 2 4 1998Kuc
aHCC 108.4 1 2 8 1998Kuc H gauche to F on other C
aHCC 111.3 1 2 7 1998Kuc H trans to F on other C
aHCH 109.1 5 1 6 1998Kuc
aHCF 109.6 3 1 6 1998Kuc H gauche to F on other C
aHCF 107.8 3 1 5 1998Kuc H trans to F on other C
dFCCF 71 3 1 2 4 1998Kuc r0
picture of 1,2-difluoroethane

Bond descriptions
Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-C 4
C-C 1
C-F 2

Atom x (Å) y (Å) z (Å)

Atom - Atom Distances (Å)

Calculated geometries for C2H4F2 (1,2-difluoroethane).

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squib reference DOI
1998Kuc K Kuchitsu(ed) "Structure of Free Polyatomic Molecules - Basic Data" Springer, Berlin, 1998  

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