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	hartrees
Energy at 0K	-77.117786
Energy at 298.15K	-77.117861
HF Energy	-77.117786
Nuclear repulsion energy	23.649086

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3050	2929	4.64
2	A₁	1605	1541	3.91
3	A₁	1393	1338	3.45
4	B₁	808	776	15.10
5	B₂	3125	3001	5.87
6	B₂	987	948	4.11

Atom	y (Å)	z (Å)
C1	0.000	-0.481
C2	0.000	0.830
H3	0.935	-1.047
H4	-0.935	-1.047

	C1	C2	H3	H4
C1		1.3114	1.0927	1.0927
C2	1.3114		2.0973	2.0973
H3	1.0927	2.0973		1.8692
H4	1.0927	2.0973	1.8692

Number	Element	Mulliken
1	C	-0.252
2	C	-0.043
3	H	0.148
4	H	0.148

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>	17.148
(<r²>)^1/2	4.141

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)