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	hartrees
Energy at 0K	-78.361533
Energy at 298.15K	-78.364682
HF Energy	-78.042158
Nuclear repulsion energy	33.200570

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A_g	3209	3013
2	A_g	1692	1589
3	A_g	1384	1300
4	A_u	1039	975
5	B_1u	3192	2997
6	B_1u	1506	1415
7	B_2g	890	836
8	B_2u	3303	3101
9	B_2u	839	787
10	B_3g	3278	3078
11	B_3g	1255	1178
12	B_3u	960	902

Atom	y (Å)	z (Å)
C1	0.000	0.673
C2	0.000	-0.673
H3	0.923	1.240
H4	-0.923	1.240
H5	-0.923	-1.240
H6	0.923	-1.240

	C1	C2	H3	H4	H5	H6
C1		1.3452	1.0838	1.0838	2.1240	2.1240
C2	1.3452		2.1240	2.1240	1.0838	1.0838
H3	1.0838	2.1240		1.8465	3.0923	2.4804
H4	1.0838	2.1240	1.8465		2.4804	3.0923
H5	2.1240	1.0838	3.0923	2.4804		1.8465
H6	2.1240	1.0838	2.4804	3.0923	1.8465

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	H5	121.583	C1	C2	H6	121.583
C2	C1	H3	121.583	C2	C1	H4	121.583
H3	C1	H4	116.835	H5	C2	H6	116.835

All results from a given calculation for C₂H₄ (Ethylene)

using model chemistry: QCISD(T)/6-31+G**

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(T)/6-31+G**

States and conformations

All results from a given calculation for C₂H₄ (Ethylene)