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	hartrees
Energy at 0K	-264.413511
Energy at 298.15K	-264.412088
HF Energy	-263.384493
Nuclear repulsion energy	122.442222

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	2241	2241
2	Σ_g	769	769
3	Σ_u	2380	2380
4	Σ_u	1623	1623
5	Π_g	584	584
5	Π_g	584	584
6	Π_u	554	554
6	Π_u	554	554
7	Π_u	60	60
7	Π_u	60	60

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.277
C3	0.000	0.000	-1.277
O4	0.000	0.000	2.439
O5	0.000	0.000	-2.439

	C1	C2	C3	O4	O5
C1		1.2768	1.2768	2.4394	2.4394
C2	1.2768		2.5535	1.1627	3.7162
C3	1.2768	2.5535		3.7162	1.1627
O4	2.4394	1.1627	3.7162		4.8789
O5	2.4394	3.7162	1.1627	4.8789

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/Def2TZVPP

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/Def2TZVPP

States and conformations

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