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	hartrees
Energy at 0K	-264.056173
Energy at 298.15K	-264.054906
HF Energy	-263.271626
Nuclear repulsion energy	121.384811

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	2244	2244
2	Σ_g	776	776
3	Σ_u	2406	2406
4	Σ_u	1621	1621
5	Π_g	576	576
5	Π_g	576	576
6	Π_u	568	568
6	Π_u	568	568
7	Π_u	105	105
7	Π_u	105	105

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.281
C3	0.000	0.000	-1.281
O4	0.000	0.000	2.460
O5	0.000	0.000	-2.460

	C1	C2	C3	O4	O5
C1		1.2813	1.2813	2.4602	2.4602
C2	1.2813		2.5626	1.1788	3.7415
C3	1.2813	2.5626		3.7415	1.1788
O4	2.4602	1.1788	3.7415		4.9203
O5	2.4602	3.7415	1.1788	4.9203

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/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: QCISD(T)=FULL/6-31G*

States and conformations

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