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	hartrees
Energy at 0K	-77.197792
Energy at 298.15K	-77.197874
HF Energy	-77.197792
Nuclear repulsion energy	23.719103

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3058	2930	5.08
2	A₁	1604	1537	3.34
3	A₁	1401	1342	3.40
4	B₁	823	788	12.61
5	B₂	3131	2999	2.92
6	B₂	992	950	2.25

Atom	y (Å)	z (Å)
C1	0.000	-0.480
C2	0.000	0.828
H3	0.932	-1.044
H4	-0.932	-1.044

	C1	C2	H3	H4
C1		1.3076	1.0894	1.0894
C2	1.3076		2.0907	2.0907
H3	1.0894	2.0907		1.8644
H4	1.0894	2.0907	1.8644

Number	Element	Mulliken
1	C	-0.460
2	C	-0.124
3	H	0.292
4	H	0.292

All results from a given calculation for CCH₂ (vinylidene)

using model chemistry: mPW1PW91/aug-cc-pVTZ

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>	17.189
(<r²>)^1/2	4.146

All results from a given calculation for CCH2 (vinylidene)

using model chemistry: mPW1PW91/aug-cc-pVTZ

States and conformations

State 1 (1A1)

State 2 (3B2)

All results from a given calculation for CCH₂ (vinylidene)

State 1 (¹A₁)

State 2 (³B₂)