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	hartrees
Energy at 0K	-76.352674
Energy at 298.15K	-76.351582
HF Energy	-76.155956
Nuclear repulsion energy	20.357126

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3566	3397	61.76
2	Σ	2443	2327	10.00
3	Π	807	769	12.16
3	Π	807	769	12.16

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-0.467
C2	0.000	0.000	0.724
H3	0.000	0.000	-1.541

	C1	C2	H3
C1		1.1906	1.0744
C2	1.1906		2.2651
H3	1.0744	2.2651

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

using model chemistry: MP2/cc-pVDZ

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-pVDZ

States and conformations

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