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	hartrees
Energy at 0K	-76.366299
Energy at 298.15K	-76.365186
HF Energy	-76.150479
Nuclear repulsion energy	20.499756

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3602	3352	50.37
2	Σ	2408	2241	6.93
3	Π	780	726	15.45
3	Π	780	726	15.45

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-0.461
C2	0.000	0.000	0.715
H3	0.000	0.000	-1.522

	C1	C2	H3
C1		1.1755	1.0616
C2	1.1755		2.2371
H3	1.0616	2.2371

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

using model chemistry: MP3/6-31+G**

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: MP3/6-31+G**

States and conformations

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