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	hartrees
Energy at 0K	-264.001375
Energy at 298.15K	-264.000085
HF Energy	-263.273304
Nuclear repulsion energy	121.743231

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2270	2162	0.00
2	Σ_g	790	753	0.00
3	Σ_u	2393	2279	3251.29
4	Σ_u	1649	1570	100.22
5	Π_g	590	562	0.00
5	Π_g	590	562	0.00
6	Π_u	578	551	87.06
6	Π_u	578	551	87.06
7	Π_u	88	84	0.29
7	Π_u	88	84	0.29

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.279
C3	0.000	0.000	-1.279
O4	0.000	0.000	2.453
O5	0.000	0.000	-2.453

	C1	C2	C3	O4	O5
C1		1.2790	1.2790	2.4528	2.4528
C2	1.2790		2.5579	1.1738	3.7318
C3	1.2790	2.5579		3.7318	1.1738
O4	2.4528	1.1738	3.7318		4.9056
O5	2.4528	3.7318	1.1738	4.9056

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/6-31G*

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/6-31G*

States and conformations

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