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	hartrees
Energy at 0K	-264.032463
Energy at 298.15K	-264.031064
HF Energy	-263.298077
Nuclear repulsion energy	121.385792

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2254	2163	0.00
2	Σ_g	782	750	0.00
3	Σ_u	2372	2276	3239.32
4	Σ_u	1639	1572	103.11
5	Π_g	601	577	0.00
5	Π_g	601	577	0.00
6	Π_u	576	553	78.80
6	Π_u	576	553	78.80
7	Π_u	51	49	1.53
7	Π_u	51	49	1.53

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.290
C3	0.000	0.000	-1.290
O4	0.000	0.000	2.461
O5	0.000	0.000	-2.461

	C1	C2	C3	O4	O5
C1		1.2905	1.2905	2.4607	2.4607
C2	1.2905		2.5810	1.1702	3.7512
C3	1.2905	2.5810		3.7512	1.1702
O4	2.4607	1.1702	3.7512		4.9214
O5	2.4607	3.7512	1.1702	4.9214

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/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/cc-pVDZ

States and conformations

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