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	hartrees
Energy at 0K	-11.552051
Energy at 298.15K	-11.550967
HF Energy	-11.373880
Nuclear repulsion energy	9.841110

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3547	3367	62.47
2	Σ	2306	2190	7.28
3	Π	831	789	16.31
3	Π	831	789	16.31

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-0.480
C2	0.000	0.000	0.739
H3	0.000	0.000	-1.554

	C1	C2	H3
C1		1.2185	1.0747
C2	1.2185		2.2932
H3	1.0747	2.2932

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

using model chemistry: MP2/CEP-31G*

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: MP2/CEP-31G*

States and conformations

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