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	hartrees
Energy at 0K	-77.814000
Energy at 298.15K	-77.817175
HF Energy	-77.598760
Nuclear repulsion energy	33.058119

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A_g	3120	3120
2	A_g	1666	1666
3	A_g	1399	1399
4	A_u	1041	1041
5	B_1u	3101	3101
6	B_1u	1543	1543
7	B_2g	940	940
8	B_2u	3199	3199
9	B_2u	876	876
10	B_3g	3170	3170
11	B_3g	1280	1280
12	B_3u	966	966

Atom	y (Å)	z (Å)
C1	0.000	0.674
C2	0.000	-0.674
H3	0.926	1.251
H4	-0.926	1.251
H5	-0.926	-1.251
H6	0.926	-1.251

	C1	C2	H3	H4	H5	H6
C1		1.3475	1.0910	1.0910	2.1360	2.1360
C2	1.3475		2.1360	2.1360	1.0910	1.0910
H3	1.0910	2.1360		1.8510	3.1129	2.5028
H4	1.0910	2.1360	1.8510		2.5028	3.1129
H5	2.1360	1.0910	3.1129	2.5028		1.8510
H6	2.1360	1.0910	2.5028	3.1129	1.8510

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	H5	121.970	C1	C2	H6	121.970
C2	C1	H3	121.970	C2	C1	H4	121.970
H3	C1	H4	116.061	H5	C2	H6	116.061

All results from a given calculation for C₂H₄ (Ethylene)

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

States and conformations

All results from a given calculation for C₂H₄ (Ethylene)