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	hartrees
Energy at 0K	-264.083439
Energy at 298.15K	-264.081996
HF Energy	-263.290047
Nuclear repulsion energy	120.064031

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	2113	2043
2	Σ_g	740	715
3	Σ_u	2366	2287
4	Σ_u	1518	1468
5	Π_g	557	538
5	Π_g	557	538
6	Π_u	521	503
6	Π_u	521	503
7	Π_u	79	76
7	Π_u	79	76

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.297
C3	0.000	0.000	-1.297
O4	0.000	0.000	2.487
O5	0.000	0.000	-2.487

	C1	C2	C3	O4	O5
C1		1.2971	1.2971	2.4874	2.4874
C2	1.2971		2.5943	1.1902	3.7845
C3	1.2971	2.5943		3.7845	1.1902
O4	2.4874	1.1902	3.7845		4.9747
O5	2.4874	3.7845	1.1902	4.9747

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: MP4/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: MP4/cc-pVDZ

States and conformations

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