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	hartrees
Energy at 0K	-264.258984
Energy at 298.15K
HF Energy	-263.373521
Nuclear repulsion energy	123.035282

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2302	2171	0.00
2	Σ_g	788	743	0.00
3	Σ_u	2388	2252	4212.45
4	Σ_u	1675	1580	92.12
5	Π_g	613	578	0.00
5	Π_g	613	578	0.00
6	Π_u	574	541	56.65
6	Π_u	574	541	56.65
7	Π_u	72i	68i	0.52
7	Π_u	72i	68i	0.52

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.274
C3	0.000	0.000	-1.274
O4	0.000	0.000	2.428
O5	0.000	0.000	-2.428

	C1	C2	C3	O4	O5
C1		1.2738	1.2738	2.4278	2.4278
C2	1.2738		2.5475	1.1540	3.7015
C3	1.2738	2.5475		3.7015	1.1540
O4	2.4278	1.1540	3.7015		4.8556
O5	2.4278	3.7015	1.1540	4.8556

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/6-311+G(3df,2p)

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/6-311+G(3df,2p)

States and conformations

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