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	hartrees
Energy at 0K	-77.814006
Energy at 298.15K	-77.817181
HF Energy	-77.598688
Nuclear repulsion energy	33.047161

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A_g	3117	2972
2	A_g	1664	1587
3	A_g	1397	1332
4	A_u	1042	993
5	B_1u	3097	2954
6	B_1u	1542	1470
7	B_2g	942	898
8	B_2u	3195	3047
9	B_2u	876	835
10	B_3g	3166	3020
11	B_3g	1280	1220
12	B_3u	967	922

Atom	y (Å)	z (Å)
C1	0.000	0.674
C2	0.000	-0.674
H3	0.926	1.252
H4	-0.926	1.252
H5	-0.926	-1.252
H6	0.926	-1.252

	C1	C2	H3	H4	H5	H6
C1		1.3479	1.0913	1.0913	2.1367	2.1367
C2	1.3479		2.1367	2.1367	1.0913	1.0913
H3	1.0913	2.1367		1.8516	3.1139	2.5036
H4	1.0913	2.1367	1.8516		2.5036	3.1139
H5	2.1367	1.0913	3.1139	2.5036		1.8516
H6	2.1367	1.0913	2.5036	3.1139	1.8516

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	H5	121.969	C1	C2	H6	121.969
C2	C1	H3	121.969	C2	C1	H4	121.969
H3	C1	H4	116.061	H5	C2	H6	116.061

All results from a given calculation for C₂H₄ (Ethylene)

using model chemistry: QCISD(T)/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 C2H4 (Ethylene)

using model chemistry: QCISD(T)/3-21G*

States and conformations

All results from a given calculation for C₂H₄ (Ethylene)