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	hartrees
Energy at 0K	-264.385763
Energy at 298.15K
HF Energy	-263.391933
Nuclear repulsion energy	122.501301

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	2242	2174
2	Σ_g	773	749
3	Σ_u	2376	2304
4	Σ_u	1627	1578
5	Π_g	587	569
5	Π_g	587	569
6	Π_u	545	528
6	Π_u	545	528
7	Π_u	41i	40i
7	Π_u	41i	40i

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.276
C3	0.000	0.000	-1.276
O4	0.000	0.000	2.438
O5	0.000	0.000	-2.438

	C1	C2	C3	O4	O5
C1		1.2761	1.2761	2.4383	2.4383
C2	1.2761		2.5523	1.1621	3.7144
C3	1.2761	2.5523		3.7144	1.1621
O4	2.4383	1.1621	3.7144		4.8765
O5	2.4383	3.7144	1.1621	4.8765

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)/cc-pVQZ

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)/cc-pVQZ

States and conformations

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