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	hartrees
Energy at 0K	-76.443662
Energy at 298.15K	-76.442581
HF Energy	-76.180616
Nuclear repulsion energy	20.701250

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3565	3381	58.95
2	Σ	2539	2408	10.61
3	Π	825	782	13.45
3	Π	825	782	13.45

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-0.459
C2	0.000	0.000	0.712
H3	0.000	0.000	-1.518

	C1	C2	H3
C1		1.1701	1.0598
C2	1.1701		2.2299
H3	1.0598	2.2299

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

using model chemistry: MP2/cc-pVQZ

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/cc-pVQZ

States and conformations

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