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	hartrees
Energy at 0K	-76.137034
Energy at 298.15K	-76.137101
HF Energy	-76.137034
Nuclear repulsion energy	23.445364

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3333	2944	13.43
2	A₁	1722	1521	0.05
3	A₁	1556	1374	1.55
4	B₁	876	774	15.35
5	B₂	3465	3060	0.07
6	B₂	1096	968	2.66

Atom	y (Å)	z (Å)
C1	0.000	-0.482
C2	0.000	0.839
H3	0.932	-1.071
H4	-0.932	-1.071

	C1	C2	H3	H4
C1		1.3219	1.1020	1.1020
C2	1.3219		2.1256	2.1256
H3	1.1020	2.1256		1.8632
H4	1.1020	2.1256	1.8632

Number	Element	Mulliken
1	C	-0.201
2	C	0.030
3	H	0.086
4	H	0.086

All results from a given calculation for CCH₂ (vinylidene)

using model chemistry: HSEh1PBE/STO-3G

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>	16.365
(<r²>)^1/2	4.045

All results from a given calculation for CCH2 (vinylidene)

using model chemistry: HSEh1PBE/STO-3G

States and conformations

State 1 (1A1)

State 2 (3B2)

All results from a given calculation for CCH₂ (vinylidene)

State 1 (¹A₁)

State 2 (³B₂)