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	hartrees
Energy at 0K	-264.256455
Energy at 298.15K
HF Energy	-263.374899
Nuclear repulsion energy	122.898293

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2303	2168	0.00
2	Σ_g	790	744	0.00
3	Σ_u	2400	2259	3960.90
4	Σ_u	1674	1575	86.85
5	Π_g	610	574	0.00
5	Π_g	610	574	0.00
6	Π_u	571	538	67.37
6	Π_u	571	538	67.37
7	Π_u	48i	45i	1.02
7	Π_u	48i	45i	1.02

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.274
C3	0.000	0.000	-1.274
O4	0.000	0.000	2.430
O5	0.000	0.000	-2.430

	C1	C2	C3	O4	O5
C1		1.2740	1.2740	2.4304	2.4304
C2	1.2740		2.5481	1.1563	3.7044
C3	1.2740	2.5481		3.7044	1.1563
O4	2.4304	1.1563	3.7044		4.8608
O5	2.4304	3.7044	1.1563	4.8608

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/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: CCSD/cc-pVTZ

States and conformations

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