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	hartrees
Energy at 0K	-76.795150
Energy at 298.15K	-76.795072
Nuclear repulsion energy	24.095653

	hartrees
Energy at 0K	-76.761198
Energy at 298.15K	-76.761309
HF Energy	-76.761198
Nuclear repulsion energy	23.473031

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3214	3214	9.67
2	A₁	1583	1583	0.05
3	A₁	1400	1400	9.47
4	B₁	877	877	39.94
5	B₂	3294	3294	6.82
6	B₂	1080	1080	0.25

Atom	y (Å)	z (Å)
C1	0.000	-0.492
C2	0.000	0.842
H3	0.922	-1.050
H4	-0.922	-1.050

	C1	C2	H3	H4
C1		1.3344	1.0775	1.0775
C2	1.3344		2.1050	2.1050
H3	1.0775	2.1050		1.8434
H4	1.0775	2.1050	1.8434

All results from a given calculation for CCH₂ (vinylidene)

using model chemistry: ROHF/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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Number	Element	Mulliken
1	C	-0.660
2	C	-0.150
3	H	0.405
4	H	0.405

	x	y	z	Total
	0.000	0.000	-0.525	0.525
CHELPG
AIM
ESP

<r²>	17.428
(<r²>)^1/2	4.175

All results from a given calculation for CCH2 (vinylidene)

using model chemistry: ROHF/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)