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	hartrees
Energy at 0K	-264.279635
Energy at 298.15K	-264.278120
HF Energy	-263.369491
Nuclear repulsion energy	122.186247

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)	Raman Act (Å⁴/u)	Dep P	Dep U
1	Σ_g	2233	2106	0.00	138.22	0.42	0.59
2	Σ_g	768	725	0.00	75.80	0.21	0.34
3	Σ_u	2442	2304	2907.44	0.00	0.00	0.00
4	Σ_u	1609	1518	96.66	0.00	0.00	0.00
5	Π_g	581	548	0.00	0.86	0.75	0.86
5	Π_g	581	548	0.00	0.86	0.75	0.86
6	Π_u	544	513	35.25	0.00	0.00	0.00
6	Π_u	544	513	35.25	0.00	0.35	0.51
7	Π_u	39	37	0.07	0.00	0.00	0.00
7	Π_u	39	37	0.07	0.00	0.00	0.00

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.276
C3	0.000	0.000	-1.276
O4	0.000	0.000	2.444
O5	0.000	0.000	-2.444

	C1	C2	C3	O4	O5
C1		1.2758	1.2758	2.4440	2.4440
C2	1.2758		2.5516	1.1682	3.7199
C3	1.2758	2.5516		3.7199	1.1682
O4	2.4440	1.1682	3.7199		4.8881
O5	2.4440	3.7199	1.1682	4.8881

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: MP2/6-311+G(3df,2p)

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: MP2/6-311+G(3df,2p)

States and conformations

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