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	hartrees
Energy at 0K	-263.995234
Energy at 298.15K	-263.993960
HF Energy	-263.274322
Nuclear repulsion energy	121.955793

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2305	2150	0.00
2	Σ_g	797	743	0.00
3	Σ_u	2419	2256	3644.30
4	Σ_u	1673	1561	101.52
5	Π_g	596	556	0.00
5	Π_g	596	556	0.00
6	Π_u	584	544	89.11
6	Π_u	584	544	89.11
7	Π_u	85	80	0.32
7	Π_u	85	80	0.32

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.278
C3	0.000	0.000	-1.278
O4	0.000	0.000	2.449
O5	0.000	0.000	-2.449

	C1	C2	C3	O4	O5
C1		1.2784	1.2784	2.4487	2.4487
C2	1.2784		2.5567	1.1703	3.7270
C3	1.2784	2.5567		3.7270	1.1703
O4	2.4487	1.1703	3.7270		4.8973
O5	2.4487	3.7270	1.1703	4.8973

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/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: CCSD/6-31G**

States and conformations

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