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	hartrees
Energy at 0K	-77.100615
Energy at 298.15K	-77.100686
HF Energy	-77.100615
Nuclear repulsion energy	23.591801

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3078	2937	3.63
2	A₁	1622	1548	4.00
3	A₁	1409	1344	2.09
4	B₁	796	760	14.52
5	B₂	3155	3011	7.18
6	B₂	997	951	3.87

Atom	y (Å)	z (Å)
C1	0.000	-0.483
C2	0.000	0.833
H3	0.934	-1.051
H4	-0.934	-1.051

	C1	C2	H3	H4
C1		1.3156	1.0934	1.0934
C2	1.3156		2.1025	2.1025
H3	1.0934	2.1025		1.8687
H4	1.0934	2.1025	1.8687

Number	Element	Mulliken
1	C	-0.297
2	C	-0.008
3	H	0.153
4	H	0.153

All results from a given calculation for CCH₂ (vinylidene)

using model chemistry: HSEh1PBE/6-31G**

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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<r²>	16.999
(<r²>)^1/2	4.123

All results from a given calculation for CCH2 (vinylidene)

using model chemistry: HSEh1PBE/6-31G**

States and conformations

State 1 (1A1)

State 2 (3B2)

All results from a given calculation for CCH₂ (vinylidene)

State 1 (¹A₁)

State 2 (³B₂)