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	hartrees
Energy at 0K	-11.376874
Energy at 298.15K	-11.375305
HF Energy	-11.376874
Nuclear repulsion energy	9.603387

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3593	3226	46.17
2	Σ	1774	1593	1.34
3	Π	415	373	43.01
3	Π	415	373	43.01

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-0.443
C2	0.000	0.000	0.820
H3	0.000	0.000	-1.508

	C1	C2	H3
C1		1.2623	1.0656
C2	1.2623		2.3278
H3	1.0656	2.3278

Number	Element	Mulliken
1	C	0.009
2	C	-0.360
3	H	0.351

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

using model chemistry: HF/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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<r²>	12.841
(<r²>)^1/2	3.583

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

using model chemistry: HF/CEP-31G*

States and conformations

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