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	hartrees
Energy at 0K	-13.433671
Energy at 298.15K	-13.436814
HF Energy	-13.242139
Nuclear repulsion energy	19.221360

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	3113	2869	0.00
2	A_g	1663	1533	0.00
3	A_g	1376	1269	0.00
4	A_u	1028	947	0.00
5	B_1u	3081	2840	24.53
6	B_1u	1504	1386	6.63
7	B_2g	840	774	0.00
8	B_2u	3207	2956	60.44
9	B_2u	837	771	1.43
10	B_3g	3177	2928	0.00
11	B_3g	1251	1153	0.00
12	B_3u	961	886	123.92

Atom	y (Å)	z (Å)
C1	0.000	0.682
C2	0.000	-0.682
H3	0.930	1.257
H4	-0.930	1.257
H5	-0.930	-1.257
H6	0.930	-1.257

	C1	C2	H3	H4	H5	H6
C1		1.3638	1.0931	1.0931	2.1499	2.1499
C2	1.3638		2.1499	2.1499	1.0931	1.0931
H3	1.0931	2.1499		1.8595	3.1264	2.5133
H4	1.0931	2.1499	1.8595		2.5133	3.1264
H5	2.1499	1.0931	3.1264	2.5133		1.8595
H6	2.1499	1.0931	2.5133	3.1264	1.8595

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	H5	121.723	C1	C2	H6	121.723
C2	C1	H3	121.723	C2	C1	H4	121.723
H3	C1	H4	116.554	H5	C2	H6	116.554

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)