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	hartrees
Energy at 0K	-264.128563
Energy at 298.15K
HF Energy	-263.300129
Nuclear repulsion energy	119.867244

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	2128	2079
2	Σ_g	747	730
3	Σ_u	2390	2335
4	Σ_u	1527	1492
5	Π_g	547	534
5	Π_g	547	534
6	Π_u	521	509
6	Π_u	521	509
7	Π_u	101	98
7	Π_u	101	98

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.298
C3	0.000	0.000	-1.298
O4	0.000	0.000	2.491
O5	0.000	0.000	-2.491

	C1	C2	C3	O4	O5
C1		1.2984	1.2984	2.4910	2.4910
C2	1.2984		2.5968	1.1925	3.7894
C3	1.2984	2.5968		3.7894	1.1925
O4	2.4910	1.1925	3.7894		4.9819
O5	2.4910	3.7894	1.1925	4.9819

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/aug-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/aug-cc-pVDZ

States and conformations

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