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	hartrees
Energy at 0K	-264.167572
Energy at 298.15K	-264.166242
HF Energy	-263.302657
Nuclear repulsion energy	122.131589

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	2263	2138	0.00	88.76	0.29	0.45
2	Σ_g	777	734	0.00	60.71	0.27	0.42
3	Σ_u	2489	2351	2447.46	0.00	0.00	0.00
4	Σ_u	1621	1531	68.13	0.00	0.00	0.00
5	Π_g	588	555	0.00	0.58	0.75	0.86
5	Π_g	588	555	0.00	0.58	0.75	0.86
6	Π_u	584	551	44.42	0.00	0.75	0.86
6	Π_u	584	551	44.42	0.00	0.75	0.86
7	Π_u	73	69	0.01	0.00	0.00	0.00
7	Π_u	73	69	0.01	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	1.274
C3	0.000	0.000	-1.274
O4	0.000	0.000	2.445
O5	0.000	0.000	-2.445

	C1	C2	C3	O4	O5
C1		1.2745	1.2745	2.4450	2.4450
C2	1.2745		2.5490	1.1705	3.7195
C3	1.2745	2.5490		3.7195	1.1705
O4	2.4450	1.1705	3.7195		4.8900
O5	2.4450	3.7195	1.1705	4.8900

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: MP2/6-31G(2df,p)

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: MP2/6-31G(2df,p)

States and conformations

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