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	hartrees
Energy at 0K	-264.037654
Energy at 298.15K	-264.036277
HF Energy	-263.299361
Nuclear repulsion energy	121.669997

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2293	2293	0.00
2	Σ_g	789	789	0.00
3	Σ_u	2403	2403	3599.49
4	Σ_u	1666	1666	101.31
5	Π_g	608	608	0.00
5	Π_g	608	608	0.00
6	Π_u	585	585	80.89
6	Π_u	585	585	80.89
7	Π_u	51	51	1.51
7	Π_u	51	51	1.51

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	2.455
O5	0.000	0.000	-2.455

	C1	C2	C3	O4	O5
C1		1.2890	1.2890	2.4551	2.4551
C2	1.2890		2.5779	1.1661	3.7441
C3	1.2890	2.5779		3.7441	1.1661
O4	2.4551	1.1661	3.7441		4.9102
O5	2.4551	3.7441	1.1661	4.9102

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/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/cc-pVDZ

States and conformations

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