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	hartrees
Energy at 0K	-77.097475
Energy at 298.15K	-77.097546
HF Energy	-77.097475
Nuclear repulsion energy	23.581942

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3086	2935	4.31
2	A₁	1623	1544	4.15
3	A₁	1423	1354	1.89
4	B₁	795	756	15.38
5	B₂	3158	3003	8.35
6	B₂	1008	958	4.10

Atom	y (Å)	z (Å)
C1	0.000	-0.483
C2	0.000	0.833
H3	0.934	-1.053
H4	-0.934	-1.053

	C1	C2	H3	H4
C1		1.3159	1.0940	1.0940
C2	1.3159		2.1046	2.1046
H3	1.0940	2.1046		1.8674
H4	1.0940	2.1046	1.8674

Number	Element	Mulliken
1	C	-0.391
2	C	0.006
3	H	0.192
4	H	0.192

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>	17.012
(<r²>)^1/2	4.125

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)