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	hartrees
Energy at 0K	-76.415418
Energy at 298.15K	-76.414348
HF Energy	-76.167684
Nuclear repulsion energy	20.580948

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3585	3400	59.29
2	Σ	2476	2349	9.08
3	Π	844	801	15.92
3	Π	844	801	15.92

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	-1.524

	C1	C2	H3
C1		1.1777	1.0625
C2	1.1777		2.2403
H3	1.0625	2.2403

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

using model chemistry: MP2=FULL/6-311G**

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: MP2=FULL/6-311G**

States and conformations

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