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	hartrees
Energy at 0K	-78.196423
Energy at 298.15K	-78.199563
HF Energy	-78.010202
Nuclear repulsion energy	32.871823

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	3171	2923	0.00
2	A_g	1682	1551	0.00
3	A_g	1392	1284	0.00
4	A_u	1038	957	0.00
5	B_1u	3138	2893	26.04
6	B_1u	1518	1399	10.89
7	B_2g	863	795	0.00
8	B_2u	3269	3013	64.65
9	B_2u	835	770	2.46
10	B_3g	3234	2981	0.00
11	B_3g	1270	1171	0.00
12	B_3u	971	895	131.56

Atom	y (Å)	z (Å)
C1	0.000	0.680
C2	0.000	-0.680
H3	0.929	1.255
H4	-0.929	1.255
H5	-0.929	-1.255
H6	0.929	-1.255

	C1	C2	H3	H4	H5	H6
C1		1.3604	1.0927	1.0927	2.1470	2.1470
C2	1.3604		2.1470	2.1470	1.0927	1.0927
H3	1.0927	2.1470		1.8582	3.1235	2.5107
H4	1.0927	2.1470	1.8582		2.5107	3.1235
H5	2.1470	1.0927	3.1235	2.5107		1.8582
H6	2.1470	1.0927	2.5107	3.1235	1.8582

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	H5	121.759	C1	C2	H6	121.759
C2	C1	H3	121.759	C2	C1	H4	121.759
H3	C1	H4	116.483	H5	C2	H6	116.483

All results from a given calculation for C₂H₄ (Ethylene)

using model chemistry: CISD/SDD

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/SDD

States and conformations

All results from a given calculation for C₂H₄ (Ethylene)