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	hartrees
Energy at 0K	-77.105779
Energy at 298.15K
HF Energy	-77.105779
Nuclear repulsion energy	23.568392

Atom	y (Å)	z (Å)
C1	0.000	-0.484
C2	0.000	0.834
H3	0.936	-1.049
H4	-0.936	-1.049

	C1	C2	H3	H4
C1		1.3177	1.0933	1.0933
C2	1.3177		2.1027	2.1027
H3	1.0933	2.1027		1.8717
H4	1.0933	2.1027	1.8717

Number	Element	Mulliken
1	C	-0.308
2	C	-0.045
3	H	0.177
4	H	0.177

	x	y	z	Total
	0.000	0.000	-0.650	0.650
CHELPG
AIM
ESP

All results from a given calculation for CCH₂ (vinylidene)

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

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>	17.365
(<r²>)^1/2	4.167

All results from a given calculation for CCH2 (vinylidene)

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

States and conformations

State 1 (1A1)

State 2 (3B2)

All results from a given calculation for CCH₂ (vinylidene)

State 1 (¹A₁)

State 2 (³B₂)