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	hartrees
Energy at 0K	-264.311980
Energy at 298.15K
HF Energy	-263.370824
Nuclear repulsion energy	122.337635

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	2294	2264
2	Σ_g	819	808
3	Σ_u	2374	2343
4	Σ_u	1623	1602
5	Π_g	587	579
5	Π_g	587	579
6	Π_u	541	534
6	Π_u	541	534
7	Π_u	57i	56i
7	Π_u	57i	56i

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.278
C3	0.000	0.000	-1.278
O4	0.000	0.000	2.442
O5	0.000	0.000	-2.442

	C1	C2	C3	O4	O5
C1		1.2782	1.2782	2.4416	2.4416
C2	1.2782		2.5563	1.1634	3.7197
C3	1.2782	2.5563		3.7197	1.1634
O4	2.4416	1.1634	3.7197		4.8831
O5	2.4416	3.7197	1.1634	4.8831

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: CCSD(T)/6-311+G(3df,2p)

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: CCSD(T)/6-311+G(3df,2p)

States and conformations

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