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	hartrees
Energy at 0K	-77.816904
Energy at 298.15K	-77.820080
HF Energy	-77.598746
Nuclear repulsion energy	33.056079

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A_g	3118	3118
2	A_g	1665	1665
3	A_g	1398	1398
4	A_u	1042	1042
5	B_1u	3099	3099
6	B_1u	1542	1542
7	B_2g	943	943
8	B_2u	3197	3197
9	B_2u	876	876
10	B_3g	3168	3168
11	B_3g	1280	1280
12	B_3u	968	968

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	1.0911	1.0911	2.1362	2.1362
C2	1.3475		2.1362	2.1362	1.0911	1.0911
H3	1.0911	2.1362		1.8512	3.1132	2.5029
H4	1.0911	2.1362	1.8512		2.5029	3.1132
H5	2.1362	1.0911	3.1132	2.5029		1.8512
H6	2.1362	1.0911	2.5029	3.1132	1.8512

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	H5	121.971	C1	C2	H6	121.971
C2	C1	H3	121.971	C2	C1	H4	121.971
H3	C1	H4	116.058	H5	C2	H6	116.058

All results from a given calculation for C₂H₄ (Ethylene)

using model chemistry: CCSD(T)=FULL/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: CCSD(T)=FULL/3-21G*

States and conformations

All results from a given calculation for C₂H₄ (Ethylene)