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	hartrees
Energy at 0K	-76.380474
Energy at 298.15K	-76.379306
HF Energy	-76.158335
Nuclear repulsion energy	20.267822

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3508	3383	53.40
2	Σ	2336	2253	6.71
3	Π	706	681	15.98
3	Π	706	681	15.98

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-0.470
C2	0.000	0.000	0.727
H3	0.000	0.000	-1.546

	C1	C2	H3
C1		1.1966	1.0761
C2	1.1966		2.2727
H3	1.0761	2.2727

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

using model chemistry: CCD/aug-cc-pVDZ

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: CCD/aug-cc-pVDZ

States and conformations

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