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	hartrees
Energy at 0K	-272.138767
Energy at 298.15K	-272.140983
Nuclear repulsion energy	110.359721

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3495	3107	0.93
2	A₁	1829	1626	7.69
3	A₁	1358	1207	7.04
4	A₁	1089	968	5.82
5	A₁	226	201	0.86
6	A₂	926	823	0.00
7	A₂	487	433	0.00
8	B₁	802	713	6.79
9	B₂	3474	3088	12.62
10	B₂	1598	1420	31.21
11	B₂	1237	1100	12.23
12	B₂	780	694	11.24

Atom	y (Å)	z (Å)
C1	0.682	0.579
C2	-0.682	0.579
F3	1.450	-0.557
F4	-1.450	-0.557
H5	1.233	1.538
H6	-1.233	1.538

	C1	C2	F3	F4	H5	H6
C1		1.3631	1.3709	2.4149	1.1060	2.1408
C2	1.3631		2.4149	1.3709	2.1408	1.1060
F3	1.3709	2.4149		2.8995	2.1056	3.4031
F4	2.4149	1.3709	2.8995		3.4031	2.1056
H5	1.1060	2.1408	2.1056	3.4031		2.4650
H6	2.1408	1.1060	3.4031	2.1056	2.4650

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	124.083	C1	C2	H6	119.879
C2	C1	F3	124.083	C2	C1	H5	119.879
F3	C1	H5	116.038	F4	C2	H6	116.038

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

using model chemistry: MP2=FULL/STO-3G

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/STO-3G

States and conformations

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