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	hartrees
Energy at 0K	-76.767364
Energy at 298.15K	-76.767297
Nuclear repulsion energy	23.998273

	hartrees
Energy at 0K	-76.738111
Energy at 298.15K	-76.738213
HF Energy	-76.738111
Nuclear repulsion energy	23.363725

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3242	2771	9.76
2	A₁	1597	1364	0.10
3	A₁	1408	1203	9.21
4	B₁	851	728	36.60
5	B₂	3326	2843	13.00
6	B₂	1087	929	0.51

Atom	y (Å)	z (Å)
C1	0.000	-0.495
C2	0.000	0.847
H3	0.922	-1.056
H4	-0.922	-1.056

	C1	C2	H3	H4
C1		1.3423	1.0796	1.0796
C2	1.3423		2.1150	2.1150
H3	1.0796	2.1150		1.8448
H4	1.0796	2.1150	1.8448

All results from a given calculation for CCH₂ (vinylidene)

using model chemistry: ROHF/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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Number	Element	Mulliken
1	C	-0.260
2	C	-0.021
3	H	0.141
4	H	0.141

	x	y	z	Total
	0.000	0.000	-0.462	0.462
CHELPG
AIM
ESP

<r²>	17.328
(<r²>)^1/2	4.163

All results from a given calculation for CCH2 (vinylidene)

using model chemistry: ROHF/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)