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	hartrees
Energy at 0K	-263.659060
Energy at 298.15K
HF Energy	-263.132736
Nuclear repulsion energy	120.016175

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2112	2035	0.00
2	Σ_g	752	725	0.00
3	Σ_u	2313	2229	2928.53
4	Σ_u	1516	1461	234.82
5	Π_g	499	481	0.00
5	Π_g	499	481	0.00
6	Π_u	391	377	77.57
6	Π_u	391	377	77.57
7	Π_u	167i	161i	7.63
7	Π_u	167i	161i	7.63

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.286
C3	0.000	0.000	-1.286
O4	0.000	0.000	2.487
O5	0.000	0.000	-2.487

	C1	C2	C3	O4	O5
C1		1.2857	1.2857	2.4873	2.4873
C2	1.2857		2.5714	1.2016	3.7730
C3	1.2857	2.5714		3.7730	1.2016
O4	2.4873	1.2016	3.7730		4.9746
O5	2.4873	3.7730	1.2016	4.9746

atom1	atom2	atom3	angle		atom1	atom2	atom3	angle
C1	C2	O4	180.000		C1	C3	O5	180.000
C2	C1	C3	180.000

All results from a given calculation for C₃O₂ (Carbon suboxide)

using model chemistry: QCISD/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 C3O2 (Carbon suboxide)

using model chemistry: QCISD/6-31G

States and conformations

All results from a given calculation for C₃O₂ (Carbon suboxide)