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State	Conformation	minimum conformation	conformer description	state description
1	1	yes	C2V	¹A₁
2	1	yes	C2V	³B₂

	hartrees
Energy at 0K	-77.023791
Energy at 298.15K
HF Energy	-76.767000
Nuclear repulsion energy	23.765366

Atom	y (Å)	z (Å)
C1	0.000	-0.483
C2	0.000	0.826
H3	0.934	-1.029
H4	-0.934	-1.029

	C1	C2	H3	H4
C1		1.3086	1.0823	1.0823
C2	1.3086		2.0772	2.0772
H3	1.0823	2.0772		1.8682
H4	1.0823	2.0772	1.8682

atom1	atom2	atom3	angle		atom1	atom2	atom3	angle
C2	C1	H3	120.342		C2	C1	H4	120.342
H3	C1	H4	119.316

All results from a given calculation for CCH₂ (vinylidene)

using model chemistry: MP3/6-31+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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You are here: Calculated > Energy > Optimized > Energy

	hartrees
Energy at 0K	-76.948996
Energy at 298.15K
HF Energy	-76.737105
Nuclear repulsion energy	23.724955

Atom	y (Å)	z (Å)
C1	0.000	-0.482
C2	0.000	0.829
H3	0.928	-1.042
H4	-0.928	-1.042

	C1	C2	H3	H4
C1		1.3105	1.0845	1.0845
C2	1.3105		2.0887	2.0887
H3	1.0845	2.0887		1.8568
H4	1.0845	2.0887	1.8568

All results from a given calculation for CCH2 (vinylidene)

using model chemistry: MP3/6-31+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)