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	hartrees
Energy at 0K	-76.381756
Energy at 298.15K	-76.380637
HF Energy	-76.154656
Nuclear repulsion energy	20.477841

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3595	3349	54.77
2	Σ	2399	2235	6.09
3	Π	773	720	18.72
4	Π	773	720	18.72

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-0.462
C2	0.000	0.000	0.716
H3	0.000	0.000	-1.523

	C1	C2	H3
C1		1.1772	1.0617
C2	1.1772		2.2390
H3	1.0617	2.2390

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

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

States and conformations

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