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	hartrees
Energy at 0K	-276.486370
Energy at 298.15K	-276.488771
Nuclear repulsion energy	113.941576

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3306	3123	5.79
2	A₁	1793	1694	44.48
3	A₁	1311	1239	30.60
4	A₁	1045	987	49.93
5	A₁	224	212	2.18
6	A₂	855	808	0.00
7	A₂	516	487	0.00
8	B₁	807	762	30.57
9	B₂	3282	3099	3.34
10	B₂	1429	1350	32.32
11	B₂	1180	1114	96.79
12	B₂	780	737	25.57

Atom	y (Å)	z (Å)
C1	0.664	0.573
C2	-0.664	0.573
F3	1.383	-0.547
F4	-1.383	-0.547
H5	1.239	1.487
H6	-1.239	1.487

	C1	C2	F3	F4	H5	H6
C1		1.3273	1.3307	2.3327	1.0802	2.1110
C2	1.3273		2.3327	1.3307	2.1110	1.0802
F3	1.3307	2.3327		2.7656	2.0389	3.3183
F4	2.3327	1.3307	2.7656		3.3183	2.0389
H5	1.0802	2.1110	2.0389	3.3183		2.4783
H6	2.1110	1.0802	3.3183	2.0389	2.4783

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	122.712	C1	C2	H6	122.191
C2	C1	F3	122.712	C2	C1	H5	122.191
F3	C1	H5	115.097	F4	C2	H6	115.097

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

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

States and conformations

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