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	hartrees
Energy at 0K	-264.014406
Energy at 298.15K	-264.013286
HF Energy	-263.280217
Nuclear repulsion energy	121.678004

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2249	2126	0.00
2	Σ_g	785	742	0.00
3	Σ_u	2367	2238	3734.47
4	Σ_u	1636	1547	132.63
5	Π_g	586	554	0.00
5	Π_g	586	554	0.00
6	Π_u	605	572	78.06
6	Π_u	605	572	78.06
7	Π_u	126	119	0.06
7	Π_u	126	119	0.06

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.280
C3	0.000	0.000	-1.280
O4	0.000	0.000	2.454
O5	0.000	0.000	-2.454

	C1	C2	C3	O4	O5
C1		1.2801	1.2801	2.4542	2.4542
C2	1.2801		2.5601	1.1741	3.7342
C3	1.2801	2.5601		3.7342	1.1741
O4	2.4542	1.1741	3.7342		4.9083
O5	2.4542	3.7342	1.1741	4.9083

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/6-31+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/6-31+G**

States and conformations

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