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	hartrees
Energy at 0K	-76.141816
Energy at 298.15K	-76.140657
HF Energy	-76.141816
Nuclear repulsion energy	20.387654

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3637	3130	55.84
2	Σ	2291	1972	6.60
3	Π	720	619	11.05
3	Π	720	619	11.05

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-0.468
C2	0.000	0.000	0.723
H3	0.000	0.000	-1.532

	C1	C2	H3
C1		1.1910	1.0640
C2	1.1910		2.2550
H3	1.0640	2.2550

Number	Element	Mulliken
1	C	0.022
2	C	-0.104
3	H	0.081

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

using model chemistry: ROHF/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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<r²>	13.788
(<r²>)^1/2	3.713

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

using model chemistry: ROHF/cc-pVDZ

States and conformations

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