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	hartrees
Energy at 0K	-189.273430
Energy at 298.15K
HF Energy	-189.051489
Nuclear repulsion energy	76.233229

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	2346	2346	1219.23
2	Σ	1946	1946	22.00
3	Σ	959	959	1.37
4	Π	610	610	23.10
4	Π	610	610	23.10
5	Π	159	159	7.04
5	Π	159	159	7.04

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-2.033
C2	0.000	0.000	-0.758
C3	0.000	0.000	0.536
O4	0.000	0.000	1.692

	C1	C2	C3	O4
C1		1.2750	2.5696	3.7253
C2	1.2750		1.2946	2.4503
C3	2.5696	1.2946		1.1557
O4	3.7253	2.4503	1.1557

All results from a given calculation for C₃O (Tricarbon monoxide)

using model chemistry: B2PLYP=FULLultrafine/6-31G(2df,p)

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 C3O (Tricarbon monoxide)

using model chemistry: B2PLYP=FULLultrafine/6-31G(2df,p)

States and conformations

All results from a given calculation for C₃O (Tricarbon monoxide)