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	hartrees
Energy at 0K	-76.375760
Energy at 298.15K	-76.374650
HF Energy	-76.150373
Nuclear repulsion energy	20.519901

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	3611	3611	50.11
2	Σ	2415	2415	6.90
3	Π	786	786	15.46
3	Π	786	786	15.46

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	-1.524

	C1	C2	H3
C1		1.1827	1.0597
C2	1.1827		2.2423
H3	1.0597	2.2423

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

using model chemistry: MP3=FULL/6-31G**

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: MP3=FULL/6-31G**

States and conformations

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