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	hartrees
Energy at 0K	-13.539475
Energy at 298.15K	-13.542630
HF Energy	-13.276439
Nuclear repulsion energy	19.437818

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	3204	2953	0.00
2	A_g	1712	1579	0.00
3	A_g	1395	1286	0.00
4	A_u	1063	980	0.00
5	B_1u	3183	2934	20.25
6	B_1u	1508	1390	7.13
7	B_2g	882	813	0.00
8	B_2u	3297	3039	39.18
9	B_2u	839	773	0.64
10	B_3g	3271	3015	0.00
11	B_3g	1258	1159	0.00
12	B_3u	979	902	122.71

Atom	y (Å)	z (Å)
C1	0.000	0.671
C2	0.000	-0.671
H3	0.925	1.240
H4	-0.925	1.240
H5	-0.925	-1.240
H6	0.925	-1.240

	C1	C2	H3	H4	H5	H6
C1		1.3418	1.0858	1.0858	2.1226	2.1226
C2	1.3418		2.1226	2.1226	1.0858	1.0858
H3	1.0858	2.1226		1.8500	3.0932	2.4790
H4	1.0858	2.1226	1.8500		2.4790	3.0932
H5	2.1226	1.0858	3.0932	2.4790		1.8500
H6	2.1226	1.0858	2.4790	3.0932	1.8500

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	H5	121.579	C1	C2	H6	121.579
C2	C1	H3	121.579	C2	C1	H4	121.579
H3	C1	H4	116.843	H5	C2	H6	116.843

All results from a given calculation for C₂H₄ (Ethylene)

using model chemistry: CISD/CEP-121G*

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 C2H4 (Ethylene)

using model chemistry: CISD/CEP-121G*

States and conformations

All results from a given calculation for C₂H₄ (Ethylene)