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	hartrees
Energy at 0K	-264.074459
Energy at 298.15K	-264.073162
HF Energy	-263.266220
Nuclear repulsion energy	120.558919

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	2134	2052
2	Σ_g	749	720
3	Σ_u	2396	2304
4	Σ_u	1532	1473
5	Π_g	555	534
5	Π_g	555	534
6	Π_u	547	526
6	Π_u	547	526
7	Π_u	116	111
7	Π_u	116	111

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.284
C3	0.000	0.000	-1.284
O4	0.000	0.000	2.477
O5	0.000	0.000	-2.477

	C1	C2	C3	O4	O5
C1		1.2840	1.2840	2.4766	2.4766
C2	1.2840		2.5679	1.1926	3.7605
C3	1.2840	2.5679		3.7605	1.1926
O4	2.4766	1.1926	3.7605		4.9532
O5	2.4766	3.7605	1.1926	4.9532

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=FULL/6-31G*

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=FULL/6-31G*

States and conformations

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