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	hartrees
Energy at 0K	-188.135440
Energy at 298.15K	-188.133440
HF Energy	-188.135440
Nuclear repulsion energy	74.997380

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ	2273	2252	875.42
2	Σ	1853	1837	12.72
3	Σ	928	919	3.60
4	Π	727	720	24.94
4	Π	727	720	24.94
5	Π	188	187	3.43
5	Π	188	187	3.43

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	-2.062
C2	0.000	0.000	-0.766
C3	0.000	0.000	0.532
O4	0.000	0.000	1.722

	C1	C2	C3	O4
C1		1.2960	2.5937	3.7835
C2	1.2960		1.2977	2.4875
C3	2.5937	1.2977		1.1898
O4	3.7835	2.4875	1.1898

Number	Element	Mulliken
1	C	0.026
2	C	0.054
3	C	0.276
4	O	-0.356

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

using model chemistry: PBEPBE/3-21G

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>	69.281
(<r²>)^1/2	8.324

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

using model chemistry: PBEPBE/3-21G

States and conformations

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