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	hartrees
Energy at 0K	-189.236368
Energy at 298.15K	-189.234137
HF Energy	-189.236368
Nuclear repulsion energy	76.531658

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	2380	2284	1551.08
2	Σ	1995	1915	49.13
3	Σ	975	935	1.71
4	Π	620	595	34.17
4	Π	620	595	34.17
5	Π	145	139	3.72
5	Π	145	139	3.72

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-2.028
C2	0.000	0.000	-0.757
C3	0.000	0.000	0.538
O4	0.000	0.000	1.685

	C1	C2	C3	O4
C1		1.2711	2.5657	3.7121
C2	1.2711		1.2946	2.4410
C3	2.5657	1.2946		1.1464
O4	3.7121	2.4410	1.1464

Number	Element	Mulliken
1	C	-0.078
2	C	-0.082
3	C	0.310
4	O	-0.149

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

using model chemistry: HSEh1PBE/6-311G*

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>	67.495
(<r²>)^1/2	8.216

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

using model chemistry: HSEh1PBE/6-311G*

States and conformations

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