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	hartrees
Energy at 0K	-76.152514
Energy at 298.15K	-76.151248
HF Energy	-76.152514
Nuclear repulsion energy	20.150090

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3487	3305	57.46
2	Σ	2117	2007	5.80
3	Π	615	583	23.31
3	Π	615	583	23.31

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-0.475
C2	0.000	0.000	0.732
H3	0.000	0.000	-1.540

	C1	C2	H3
C1		1.2074	1.0646
C2	1.2074		2.2720
H3	1.0646	2.2720

All results from a given calculation for C₂H (Ethynyl radical)

using model chemistry: wB97X-D/3-21G*

States and conformations

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for C2H (Ethynyl radical)

using model chemistry: wB97X-D/3-21G*

States and conformations

All results from a given calculation for C₂H (Ethynyl radical)