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	hartrees
Energy at 0K	-13.664708
Energy at 298.15K	-13.667817
HF Energy	-13.664708
Nuclear repulsion energy	19.280895

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	3065	3065	0.00
2	A_g	1628	1628	0.00
3	A_g	1328	1328	0.00
4	A_u	1023	1023	0.00
5	B_1u	3050	3050	23.58
6	B_1u	1416	1416	7.80
7	B_2g	886	886	0.00
8	B_2u	3161	3161	39.14
9	B_2u	797	797	1.40
10	B_3g	3132	3132	0.00
11	B_3g	1184	1184	0.00
12	B_3u	921	921	119.25

Atom	y (Å)	z (Å)
C1	0.000	0.674
C2	0.000	-0.674
H3	0.935	1.250
H4	-0.935	1.250
H5	-0.935	-1.250
H6	0.935	-1.250

	C1	C2	H3	H4	H5	H6
C1		1.3480	1.0978	1.0978	2.1389	2.1389
C2	1.3480		2.1389	2.1389	1.0978	1.0978
H3	1.0978	2.1389		1.8691	3.1214	2.4999
H4	1.0978	2.1389	1.8691		2.4999	3.1214
H5	2.1389	1.0978	3.1214	2.4999		1.8691
H6	2.1389	1.0978	2.4999	3.1214	1.8691

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	H5	121.644	C1	C2	H6	121.644
C2	C1	H3	121.644	C2	C1	H4	121.644
H3	C1	H4	116.711	H5	C2	H6	116.711

All results from a given calculation for C₂H₄ (Ethylene)

using model chemistry: PBEPBE/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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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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Number	Element	Mulliken
1	C	-0.324
2	C	-0.324
3	H	0.162
4	H	0.162
5	H	0.162
6	H	0.162

<r²>	21.692
(<r²>)^1/2	4.657

All results from a given calculation for C2H4 (Ethylene)

using model chemistry: PBEPBE/CEP-121G*

States and conformations

All results from a given calculation for C₂H₄ (Ethylene)