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	hartrees
Energy at 0K	-78.433379
Energy at 298.15K	-78.436539
HF Energy	-78.061928
Nuclear repulsion energy	33.305797

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A_g	3155	3114
2	A_g	1666	1644
3	A_g	1367	1349
4	A_u	1045	1031
5	B_1u	3136	3095
6	B_1u	1475	1456
7	B_2g	943	930
8	B_2u	3245	3203
9	B_2u	822	811
10	B_3g	3219	3177
11	B_3g	1241	1224
12	B_3u	961	948

Atom	y (Å)	z (Å)
C1	0.000	0.669
C2	0.000	-0.669
H3	0.924	1.235
H4	-0.924	1.235
H5	-0.924	-1.235
H6	0.924	-1.235

	C1	C2	H3	H4	H5	H6
C1		1.3374	1.0839	1.0839	2.1163	2.1163
C2	1.3374		2.1163	2.1163	1.0839	1.0839
H3	1.0839	2.1163		1.8480	3.0853	2.4706
H4	1.0839	2.1163	1.8480		2.4706	3.0853
H5	2.1163	1.0839	3.0853	2.4706		1.8480
H6	2.1163	1.0839	2.4706	3.0853	1.8480

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	H5	121.517	C1	C2	H6	121.517
C2	C1	H3	121.517	C2	C1	H4	121.517
H3	C1	H4	116.965	H5	C2	H6	116.965

All results from a given calculation for C₂H₄ (Ethylene)

using model chemistry: CCSD(T)/6-311+G(3df,2p)

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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Calc. vs exp. Bad Vib. HF vs MP2 Bad scale factors Low excited states Oddities NaCN Is not linear FAQ Help Units Choose Units Energy Bond length Rotational Constant Moment of Inertia Dipole and Quadrupole Polarizability Explanations Hartree cm-1 Debye Credits Just show me Show me a calculated geometry Summary Using older interface Limit Basis sets Method options List Recent molecules Choose a few Molecules Number of atoms By heavy atoms Diatomics InChI Deuterated Dimers Geometry Point group Point group count Bonds types Isodesmic reactions Bad point group Multiple conformers, states Vibrations Big anharmonicity Energy Enthalpy at 0 Kelvin Similar molecules Similar Isomers Cis/trans Tautomers Multiple conformers, states Ions, Dipoles, etc. List Ions Ionization changes point group Dipole Quadrupole Polarizability Proton Affinities Index of CCCBDB Feedback Error form Wants
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All results from a given calculation for C2H4 (Ethylene)

using model chemistry: CCSD(T)/6-311+G(3df,2p)

States and conformations

All results from a given calculation for C₂H₄ (Ethylene)