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	hartrees
Energy at 0K	-264.059814
Energy at 298.15K
HF Energy	-263.313769
Nuclear repulsion energy	121.968349

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2320	2320	0.00
2	Σ_g	791	791	0.00
3	Σ_u	2406	2406	4581.03
4	Σ_u	1688	1688	131.84
5	Π_g	615	615	0.00
5	Π_g	615	615	0.00
6	Π_u	548	548	52.53
6	Π_u	548	548	52.53
7	Π_u	123i	123i	1.16
7	Π_u	123i	123i	1.16

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.288
C3	0.000	0.000	-1.288
O4	0.000	0.000	2.449
O5	0.000	0.000	-2.449

	C1	C2	C3	O4	O5
C1		1.2884	1.2884	2.4494	2.4494
C2	1.2884		2.5767	1.1610	3.7377
C3	1.2884	2.5767		3.7377	1.1610
O4	2.4494	1.1610	3.7377		4.8987
O5	2.4494	3.7377	1.1610	4.8987

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: MP3/daug-cc-pVDZ

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: MP3/daug-cc-pVDZ

States and conformations

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