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	hartrees
Energy at 0K	-76.367280
Energy at 298.15K	-76.366184
HF Energy	-76.154355
Nuclear repulsion energy	20.516825

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3606	3387	59.89
2	Σ	2478	2327	7.28
3	Π	806	757	16.62
3	Π	806	757	16.62

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-0.464
C2	0.000	0.000	0.718
H3	0.000	0.000	-1.525

	C1	C2	H3
C1		1.1825	1.0613
C2	1.1825		2.2438
H3	1.0613	2.2438

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

using model chemistry: MP2=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: MP2=FULL/6-31+G**

States and conformations

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