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	hartrees
Energy at 0K	-75.635844
Energy at 298.15K	-75.634434
HF Energy	-75.635844
Nuclear repulsion energy	20.054144

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3658	3264	116.36
2	Σ	2234	1994	3.44
3	Π	559	499	1.93
3	Π	559	499	1.93

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-0.476
C2	0.000	0.000	0.735
H3	0.000	0.000	-1.557

	C1	C2	H3
C1		1.2108	1.0816
C2	1.2108		2.2924
H3	1.0816	2.2924

Number	Element	Mulliken
1	C	-0.140
2	C	0.014
3	H	0.125

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

using model chemistry: B3LYP/STO-3G

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>	13.149
(<r²>)^1/2	3.626

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

using model chemistry: B3LYP/STO-3G

States and conformations

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