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	hartrees
Energy at 0K	-189.350217
Energy at 298.15K	-189.347975
HF Energy	-189.350217
Nuclear repulsion energy	76.493779

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	2384	2276	1462.43
2	Σ	2001	1910	49.29
3	Σ	979	934	1.41
4	Π	623	594	28.03
4	Π	623	594	28.03
5	Π	140	134	5.58
5	Π	140	134	5.58

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	1.686

	C1	C2	C3	O4
C1		1.2708	2.5654	3.7135
C2	1.2708		1.2946	2.4427
C3	2.5654	1.2946		1.1481
O4	3.7135	2.4427	1.1481

Number	Element	Mulliken
1	C	-0.189
2	C	-0.164
3	C	0.534
4	O	-0.181

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

using model chemistry: mPW1PW91/6-31G(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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<r²>	67.219
(<r²>)^1/2	8.199

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

using model chemistry: mPW1PW91/6-31G(2df,p)

States and conformations

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