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	hartrees
Energy at 0K	-264.072058
Energy at 298.15K	-264.071157
HF Energy	-263.278557
Nuclear repulsion energy	121.333041

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	2223	2223
2	Σ_g	771	771
3	Σ_u	2381	2381
4	Σ_u	1608	1608
5	Π_g	602	602
5	Π_g	602	602
6	Π_u	702	702
6	Π_u	702	702
7	Π_u	158	158
7	Π_u	158	158

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.282
C3	0.000	0.000	-1.282
O4	0.000	0.000	2.461
O5	0.000	0.000	-2.461

	C1	C2	C3	O4	O5
C1		1.2822	1.2822	2.4612	2.4612
C2	1.2822		2.5643	1.1791	3.7434
C3	1.2822	2.5643		3.7434	1.1791
O4	2.4612	1.1791	3.7434		4.9225
O5	2.4612	3.7434	1.1791	4.9225

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: QCISD(T)=FULL/6-31+G**

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: QCISD(T)=FULL/6-31+G**

States and conformations

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