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	hartrees
Energy at 0K	-264.084914
Energy at 298.15K
HF Energy	-263.312288
Nuclear repulsion energy	121.621714

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2263	2263	0.00
2	Σ_g	780	780	0.00
3	Σ_u	2371	2371	4148.80
4	Σ_u	1646	1646	122.20
5	Π_g	611	611	0.00
5	Π_g	611	611	0.00
6	Π_u	555	555	51.18
6	Π_u	555	555	51.18
7	Π_u	105i	105i	0.90
7	Π_u	105i	105i	0.90

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.289
C3	0.000	0.000	-1.289
O4	0.000	0.000	2.456
O5	0.000	0.000	-2.456

	C1	C2	C3	O4	O5
C1		1.2891	1.2891	2.4560	2.4560
C2	1.2891		2.5781	1.1670	3.7451
C3	1.2891	2.5781		3.7451	1.1670
O4	2.4560	1.1670	3.7451		4.9121
O5	2.4560	3.7451	1.1670	4.9121

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: CCSD=FULL/daug-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: CCSD=FULL/daug-cc-pVDZ

States and conformations

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