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	hartrees
Energy at 0K	-264.071889
Energy at 298.15K
HF Energy	-263.309016
Nuclear repulsion energy	121.299479

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2226	2156	0.00
2	Σ_g	773	748	0.00
3	Σ_u	2339	2266	3760.16
4	Σ_u	1618	1568	126.90
5	Π_g	595	576	0.00
5	Π_g	595	576	0.00
6	Π_u	526	510	51.04
6	Π_u	526	510	51.04
7	Π_u	130i	126i	1.33
7	Π_u	130i	126i	1.33

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.291
C3	0.000	0.000	-1.291
O4	0.000	0.000	2.462
O5	0.000	0.000	-2.462

	C1	C2	C3	O4	O5
C1		1.2912	1.2912	2.4624	2.4624
C2	1.2912		2.5824	1.1713	3.7536
C3	1.2912	2.5824		3.7536	1.1713
O4	2.4624	1.1713	3.7536		4.9249
O5	2.4624	3.7536	1.1713	4.9249

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/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: QCISD/aug-cc-pVDZ

States and conformations

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