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	hartrees
Energy at 0K	-276.504317
Energy at 298.15K	-276.506746
Nuclear repulsion energy	114.164073

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3300	3125	6.54
2	A₁	1833	1736	42.05
3	A₁	1323	1253	31.76
4	A₁	1058	1003	54.26
5	A₁	230	218	2.44
6	A₂	881	834	0.00
7	A₂	518	490	0.00
8	B₁	817	773	28.47
9	B₂	3274	3101	2.13
10	B₂	1447	1371	36.26
11	B₂	1192	1129	93.84
12	B₂	788	747	27.54

Atom	y (Å)	z (Å)
C1	0.662	0.572
C2	-0.662	0.572
F3	1.379	-0.546
F4	-1.379	-0.546
H5	1.241	1.484
H6	-1.241	1.484

	C1	C2	F3	F4	H5	H6
C1		1.3232	1.3288	2.3271	1.0803	2.1099
C2	1.3232		2.3271	1.3288	2.1099	1.0803
F3	1.3288	2.3271		2.7581	2.0347	3.3146
F4	2.3271	1.3288	2.7581		3.3146	2.0347
H5	1.0803	2.1099	2.0347	3.3146		2.4823
H6	2.1099	1.0803	3.3146	2.0347	2.4823

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	122.679	C1	C2	H6	122.446
C2	C1	F3	122.679	C2	C1	H5	122.446
F3	C1	H5	114.875	F4	C2	H6	114.875

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

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

States and conformations

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