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	hartrees
Energy at 0K	-13.562095
Energy at 298.15K	-13.565214
HF Energy	-13.275824
Nuclear repulsion energy	19.341924

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	3146	3000	0.00
2	A_g	1670	1592	0.00
3	A_g	1364	1301	0.00
4	A_u	1033	985	0.00
5	B_1u	3127	2982	20.76
6	B_1u	1482	1414	6.46
7	B_2g	830	791	0.00
8	B_2u	3240	3090	40.21
9	B_2u	825	786	0.63
10	B_3g	3214	3065	0.00
11	B_3g	1234	1177	0.00
12	B_3u	945	901	117.38

Atom	y (Å)	z (Å)
C1	0.000	0.675
C2	0.000	-0.675
H3	0.929	1.246
H4	-0.929	1.246
H5	-0.929	-1.246
H6	0.929	-1.246

	C1	C2	H3	H4	H5	H6
C1		1.3501	1.0901	1.0901	2.1335	2.1335
C2	1.3501		2.1335	2.1335	1.0901	1.0901
H3	1.0901	2.1335		1.8577	3.1076	2.4912
H4	1.0901	2.1335	1.8577		2.4912	3.1076
H5	2.1335	1.0901	3.1076	2.4912		1.8577
H6	2.1335	1.0901	2.4912	3.1076	1.8577

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	H5	121.561	C1	C2	H6	121.561
C2	C1	H3	121.561	C2	C1	H4	121.561
H3	C1	H4	116.878	H5	C2	H6	116.878

All results from a given calculation for C₂H₄ (Ethylene)

using model chemistry: QCISD/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: QCISD/CEP-121G*

States and conformations

All results from a given calculation for C₂H₄ (Ethylene)