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	hartrees
Energy at 0K	-77.114158
Energy at 298.15K	-77.114230
HF Energy	-77.114158
Nuclear repulsion energy	23.643494

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3053	2929	6.89
2	A₁	1608	1543	4.11
3	A₁	1408	1351	3.04
4	B₁	796	764	15.82
5	B₂	3126	3000	9.07
6	B₂	1001	961	4.57

Atom	y (Å)	z (Å)
C1	0.000	-0.481
C2	0.000	0.831
H3	0.933	-1.050
H4	-0.933	-1.050

	C1	C2	H3	H4
C1		1.3115	1.0931	1.0931
C2	1.3115		2.0994	2.0994
H3	1.0931	2.0994		1.8668
H4	1.0931	2.0994	1.8668

Number	Element	Mulliken
1	C	-0.465
2	C	-0.011
3	H	0.238
4	H	0.238

All results from a given calculation for CCH₂ (vinylidene)

using model chemistry: HSEh1PBE/6-311G*

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>	17.163
(<r²>)^1/2	4.143

All results from a given calculation for CCH2 (vinylidene)

using model chemistry: HSEh1PBE/6-311G*

States and conformations

State 1 (1A1)

State 2 (3B2)

All results from a given calculation for CCH₂ (vinylidene)

State 1 (¹A₁)

State 2 (³B₂)