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	hartrees
Energy at 0K	-75.871854
Energy at 298.15K	-75.870725
HF Energy	-75.730617
Nuclear repulsion energy	20.348628

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3522	3281	46.36
2	Σ	2220	2068	3.80
3	Π	757	706	34.48
3	Π	757	706	34.48

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-0.469
C2	0.000	0.000	0.725
H3	0.000	0.000	-1.533

	C1	C2	H3
C1		1.1939	1.0633
C2	1.1939		2.2573
H3	1.0633	2.2573

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

using model chemistry: CID/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: CID/3-21G

States and conformations

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