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	hartrees
Energy at 0K	-76.154349
Energy at 298.15K	-76.152472
HF Energy	-76.154349
Nuclear repulsion energy	20.176792

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3376	3340	72.51
2	Σ	2061	2039	6.08
3	Π	271	268	1.90
3	Π	271	268	1.90

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-0.473
C2	0.000	0.000	0.731
H3	0.000	0.000	-1.547

	C1	C2	H3
C1		1.2037	1.0741
C2	1.2037		2.2778
H3	1.0741	2.2778

Number	Element	Mulliken
1	C	-0.139
2	C	-0.040
3	H	0.180

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

using model chemistry: LSDA/cc-pVTZ

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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<r²>	13.983
(<r²>)^1/2	3.739

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

using model chemistry: LSDA/cc-pVTZ

States and conformations

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