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	hartrees
Energy at 0K	-76.389893
Energy at 298.15K	-76.388297
HF Energy	-76.157194
Nuclear repulsion energy	19.835132

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3470	3287	52.69
2	Σ	2048	1940	4.52
3	Π	396	375	3.49
3	Π	395	375	3.48

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-0.484
C2	0.000	0.000	0.744
H3	0.000	0.000	-1.562

	C1	C2	H3
C1		1.2280	1.0783
C2	1.2280		2.3062
H3	1.0783	2.3062

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

using model chemistry: CCSD/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: CCSD/cc-pVDZ

States and conformations

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