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	hartrees
Energy at 0K	-276.340592
Energy at 298.15K	-276.342972
Nuclear repulsion energy	113.308307

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3347	3128	9.53
2	A₁	1810	1691	41.86
3	A₁	1317	1230	27.12
4	A₁	1048	979	60.36
5	A₁	226	211	2.45
6	A₂	843	788	0.00
7	A₂	498	466	0.00
8	B₁	806	753	29.79
9	B₂	3323	3105	1.57
10	B₂	1449	1354	30.18
11	B₂	1173	1096	93.71
12	B₂	773	722	27.64

Atom	y (Å)	z (Å)
C1	0.664	0.585
C2	-0.664	0.585
F3	1.381	-0.555
F4	-1.381	-0.555
H5	1.247	1.490
H6	-1.247	1.490

	C1	C2	F3	F4	H5	H6
C1		1.3281	1.3470	2.3417	1.0772	2.1150
C2	1.3281		2.3417	1.3470	2.1150	1.0772
F3	1.3470	2.3417		2.7626	2.0502	3.3309
F4	2.3417	1.3470	2.7626		3.3309	2.0502
H5	1.0772	2.1150	2.0502	3.3309		2.4946
H6	2.1150	1.0772	3.3309	2.0502	2.4946

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	122.170	C1	C2	H6	122.781
C2	C1	F3	122.170	C2	C1	H5	122.781
F3	C1	H5	115.048	F4	C2	H6	115.048

All results from a given calculation for C₂H₂F₂ (Ethene, 1,2-difluoro-, (Z)-)

using model chemistry: MP2=FULL/6-31G**

States and conformations

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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HF vs MP2 Bad vib. Calc. vs exp. 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All results from a given calculation for C2H2F2 (Ethene, 1,2-difluoro-, (Z)-)

using model chemistry: MP2=FULL/6-31G**

States and conformations

All results from a given calculation for C₂H₂F₂ (Ethene, 1,2-difluoro-, (Z)-)