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	hartrees
Energy at 0K	-264.276847
Energy at 298.15K
HF Energy	-263.376885
Nuclear repulsion energy	122.698182

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2262	2177	0.00
2	Σ_g	782	753	0.00
3	Σ_u	2359	2271	3839.13
4	Σ_u	1649	1587	101.85
5	Π_g	598	575	0.00
5	Π_g	598	575	0.00
6	Π_u	544	524	52.01
6	Π_u	544	524	52.01
7	Π_u	90i	87i	0.69
7	Π_u	90i	87i	0.69

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.275
C3	0.000	0.000	-1.275
O4	0.000	0.000	2.434
O5	0.000	0.000	-2.434

	C1	C2	C3	O4	O5
C1		1.2748	1.2748	2.4342	2.4342
C2	1.2748		2.5496	1.1594	3.7090
C3	1.2748	2.5496		3.7090	1.1594
O4	2.4342	1.1594	3.7090		4.8684
O5	2.4342	3.7090	1.1594	4.8684

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/aug-cc-pVTZ

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/aug-cc-pVTZ

States and conformations

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