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	hartrees
Energy at 0K	-276.511536
Energy at 298.15K	-276.513949
Nuclear repulsion energy	114.084009

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3313	3114	6.12
2	A₁	1804	1695	46.49
3	A₁	1319	1240	29.60
4	A₁	1043	980	49.09
5	A₁	222	208	2.27
6	A₂	869	817	0.00
7	A₂	526	494	0.00
8	B₁	811	762	30.00
9	B₂	3287	3089	3.25
10	B₂	1432	1346	34.34
11	B₂	1188	1116	99.22
12	B₂	785	738	24.69

Atom	y (Å)	z (Å)
C1	0.662	0.567
C2	-0.662	0.567
F3	1.390	-0.543
F4	-1.390	-0.543
H5	1.227	1.485
H6	-1.227	1.485

	C1	C2	F3	F4	H5	H6
C1		1.3233	1.3268	2.3320	1.0789	2.1005
C2	1.3233		2.3320	1.3268	2.1005	1.0789
F3	1.3268	2.3320		2.7793	2.0345	3.3107
F4	2.3320	1.3268	2.7793		3.3107	2.0345
H5	1.0789	2.1005	2.0345	3.3107		2.4544
H6	2.1005	1.0789	3.3107	2.0345	2.4544

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	123.277	C1	C2	H6	121.614
C2	C1	F3	123.277	C2	C1	H5	121.614
F3	C1	H5	115.109	F4	C2	H6	115.109

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

using model chemistry: MP2=FULL/6-31G(2df,p)

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(2df,p)

States and conformations

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