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	hartrees
Energy at 0K	-274.612506
Energy at 298.15K	-274.614971
Nuclear repulsion energy	111.734296

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3337	3119	7.15
2	A₁	1847	1725	16.29
3	A₁	1377	1287	9.29
4	A₁	1035	968	50.18
5	A₁	235	220	3.29
6	A₂	987	922	0.00
7	A₂	523	489	0.00
8	B₁	863	806	28.37
9	B₂	3306	3089	0.02
10	B₂	1500	1402	12.93
11	B₂	1172	1095	71.43
12	B₂	771	720	23.78

Atom	y (Å)	z (Å)
C1	0.659	0.586
C2	-0.659	0.586
F3	1.423	-0.558
F4	-1.423	-0.558
H5	1.222	1.504
H6	-1.222	1.504

	C1	C2	F3	F4	H5	H6
C1		1.3190	1.3745	2.3753	1.0769	2.0934
C2	1.3190		2.3753	1.3745	2.0934	1.0769
F3	1.3745	2.3753		2.8452	2.0715	3.3530
F4	2.3753	1.3745	2.8452		3.3530	2.0715
H5	1.0769	2.0934	2.0715	3.3530		2.4433
H6	2.0934	1.0769	3.3530	2.0715	2.4433

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	F4	123.723	C1	C2	H6	121.468
C2	C1	F3	123.723	C2	C1	H5	121.468
F3	C1	H5	114.809	F4	C2	H6	114.809

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

using model chemistry: CISD/3-21G*

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

using model chemistry: CISD/3-21G*

States and conformations

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