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	hartrees
Energy at 0K	-264.261625
Energy at 298.15K
HF Energy	-263.378295
Nuclear repulsion energy	123.071120

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2316	2216	0.00
2	Σ_g	792	758	0.00
3	Σ_u	2399	2296	4519.78
4	Σ_u	1687	1614	94.71
5	Π_g	609	583	0.00
5	Π_g	609	583	0.00
6	Π_u	557	533	53.89
6	Π_u	557	533	53.89
7	Π_u	94i	90i	0.71
7	Π_u	94i	90i	0.71

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.273
C3	0.000	0.000	-1.273
O4	0.000	0.000	2.427
O5	0.000	0.000	-2.427

	C1	C2	C3	O4	O5
C1		1.2735	1.2735	2.4271	2.4271
C2	1.2735		2.5470	1.1536	3.7006
C3	1.2735	2.5470		3.7006	1.1536
O4	2.4271	1.1536	3.7006		4.8542
O5	2.4271	3.7006	1.1536	4.8542

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: CCD/aug-cc-pVTZ

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: CCD/aug-cc-pVTZ

States and conformations

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