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	hartrees
Energy at 0K	-276.552378
Energy at 298.15K	-276.554798
Nuclear repulsion energy	113.559821

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3302	3132	8.98
2	A₁	1782	1690	48.70
3	A₁	1305	1238	35.48
4	A₁	1034	981	62.58
5	A₁	234	222	2.57
6	A₂	863	818	0.00
7	A₂	516	490	0.00
8	B₁	803	761	38.24
9	B₂	3277	3109	2.67
10	B₂	1413	1340	34.48
11	B₂	1169	1109	110.82
12	B₂	783	742	30.86

Atom	y (Å)	z (Å)
C1	0.665	0.576
C2	-0.665	0.576
F3	1.387	-0.549
F4	-1.387	-0.549
H5	1.241	1.491
H6	-1.241	1.491

	C1	C2	F3	F4	H5	H6
C1		1.3302	1.3367	2.3403	1.0812	2.1141
C2	1.3302		2.3403	1.3367	2.1141	1.0812
F3	1.3367	2.3403		2.7743	2.0454	3.3268
F4	2.3403	1.3367	2.7743		3.3268	2.0454
H5	1.0812	2.1141	2.0454	3.3268		2.4813
H6	2.1141	1.0812	3.3268	2.0454	2.4813

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	122.697	C1	C2	H6	122.164
C2	C1	F3	122.697	C2	C1	H5	122.164
F3	C1	H5	115.139	F4	C2	H6	115.139

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

using model chemistry: MP2=FULL/6-311G**

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/6-311G**

States and conformations

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