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	hartrees
Energy at 0K	-76.414325
Energy at 298.15K	-76.411943
HF Energy	-76.158824
Nuclear repulsion energy	19.758539

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ	3438	3335
2	Σ	2011	1950
3	Π	104	101
3	Π	104	101

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-0.486
C2	0.000	0.000	0.747
H3	0.000	0.000	-1.565

	C1	C2	H3
C1		1.2338	1.0785
C2	1.2338		2.3123
H3	1.0785	2.3123

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

using model chemistry: QCISD(T)=FULL/aug-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: QCISD(T)=FULL/aug-cc-pVDZ

States and conformations

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