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	hartrees
Energy at 0K	-264.261656
Energy at 298.15K
HF Energy	-263.374180
Nuclear repulsion energy	122.722484

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2274	2173	0.00
2	Σ_g	785	750	0.00
3	Σ_u	2377	2272	3622.36
4	Σ_u	1654	1580	88.80
5	Π_g	605	578	0.00
5	Π_g	605	578	0.00
6	Π_u	565	540	66.00
6	Π_u	565	540	66.00
7	Π_u	46i	44i	1.01
7	Π_u	46i	44i	1.01

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.274
C3	0.000	0.000	-1.274
O4	0.000	0.000	2.434
O5	0.000	0.000	-2.434

	C1	C2	C3	O4	O5
C1		1.2745	1.2745	2.4337	2.4337
C2	1.2745		2.5489	1.1593	3.7082
C3	1.2745	2.5489		3.7082	1.1593
O4	2.4337	1.1593	3.7082		4.8675
O5	2.4337	3.7082	1.1593	4.8675

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/cc-pVTZ

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/cc-pVTZ

States and conformations

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