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	hartrees
Energy at 0K	-264.384813
Energy at 298.15K
HF Energy	-263.373168
Nuclear repulsion energy	122.572812

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	2249	2152
2	Σ_g	777	744
3	Σ_u	2404	2300
4	Σ_u	1627	1557
5	Π_g	589	564
5	Π_g	589	564
6	Π_u	539	516
6	Π_u	539	516
7	Π_u	50i	48i
7	Π_u	50i	48i

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.273
C3	0.000	0.000	-1.273
O4	0.000	0.000	2.437
O5	0.000	0.000	-2.437

	C1	C2	C3	O4	O5
C1		1.2729	1.2729	2.4366	2.4366
C2	1.2729		2.5458	1.1637	3.7095
C3	1.2729	2.5458		3.7095	1.1637
O4	2.4366	1.1637	3.7095		4.8733
O5	2.4366	3.7095	1.1637	4.8733

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(T)=FULL/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(T)=FULL/cc-pVTZ

States and conformations

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