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	hartrees
Energy at 0K	-75.528668
Energy at 298.15K
HF Energy	-75.482982
Nuclear repulsion energy	20.085091

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3713	3713	111.29
2	Σ	2342	2342	4.09
3	Π	649	649	3.40
3	Π	649	649	3.40

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-0.475
C2	0.000	0.000	0.734
H3	0.000	0.000	-1.554

	C1	C2	H3
C1		1.2090	1.0795
C2	1.2090		2.2886
H3	1.0795	2.2886

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

using model chemistry: B2PLYP=FULLultrafine/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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All results from a given calculation for C2H (Ethynyl radical)

using model chemistry: B2PLYP=FULLultrafine/STO-3G

States and conformations

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