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	hartrees
Energy at 0K	-77.036191
Energy at 298.15K	-77.036276
HF Energy	-76.760878
Nuclear repulsion energy	23.578692

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3082	2966	4.32
2	A₁	1577	1517	3.65
3	A₁	1418	1365	3.09
4	B₁	820	790	15.84
5	B₂	3160	3041	2.74
6	B₂	1009	971	1.27

Atom	y (Å)	z (Å)
C1	0.000	-0.486
C2	0.000	0.834
H3	0.933	-1.045
H4	-0.933	-1.045

	C1	C2	H3	H4
C1		1.3203	1.0875	1.0875
C2	1.3203		2.0980	2.0980
H3	1.0875	2.0980		1.8658
H4	1.0875	2.0980	1.8658

All results from a given calculation for CCH₂ (vinylidene)

using model chemistry: QCISD/aug-cc-pVTZ

States and conformations

State 1 (¹A₁)

State 2 (³B₂)

	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 CCH2 (vinylidene)

using model chemistry: QCISD/aug-cc-pVTZ

States and conformations

State 1 (1A1)

State 2 (3B2)

All results from a given calculation for CCH₂ (vinylidene)

State 1 (¹A₁)

State 2 (³B₂)