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	hartrees
Energy at 0K	-264.419023
Energy at 298.15K
HF Energy	-263.377157
Nuclear repulsion energy	122.654696

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	2246	2246
2	Σ_g	775	775
3	Σ_u	2373	2373
4	Σ_u	1614	1614
5	Π_g	584	584
5	Π_g	584	584
6	Π_u	530	530
6	Π_u	530	530
7	Π_u	76i	76i
7	Π_u	76i	76i

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	2.435
O5	0.000	0.000	-2.435

	C1	C2	C3	O4	O5
C1		1.2745	1.2745	2.4352	2.4352
C2	1.2745		2.5490	1.1607	3.7097
C3	1.2745	2.5490		3.7097	1.1607
O4	2.4352	1.1607	3.7097		4.8704
O5	2.4352	3.7097	1.1607	4.8704

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(T)=FULL/daug-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(T)=FULL/daug-cc-pVTZ

States and conformations

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