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	hartrees
Energy at 0K	-264.271720
Energy at 298.15K
HF Energy	-263.377600
Nuclear repulsion energy	122.870666

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2291	2189	0.00
2	Σ_g	787	752	0.00
3	Σ_u	2381	2276	4194.69
4	Σ_u	1669	1595	99.93
5	Π_g	603	577	0.00
5	Π_g	603	577	0.00
6	Π_u	550	526	52.93
6	Π_u	550	526	52.93
7	Π_u	91i	87i	0.68
7	Π_u	91i	87i	0.68

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	2.431
O5	0.000	0.000	-2.431

	C1	C2	C3	O4	O5
C1		1.2744	1.2744	2.4309	2.4309
C2	1.2744		2.5488	1.1565	3.7053
C3	1.2744	2.5488		3.7053	1.1565
O4	2.4309	1.1565	3.7053		4.8619
O5	2.4309	3.7053	1.1565	4.8619

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/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: CCSD/aug-cc-pVTZ

States and conformations

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