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	hartrees
Energy at 0K	-264.453930
Energy at 298.15K	-264.452548
HF Energy	-263.366710
Nuclear repulsion energy	121.672503

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	2312	2312
2	Σ_g	861	861
3	Σ_u	2370	2370
4	Σ_u	1541	1541
5	Π_g	569	569
5	Π_g	569	569
6	Π_u	542	542
6	Π_u	542	542
7	Π_u	71	71
7	Π_u	71	71

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.279
C3	0.000	0.000	-1.279
O4	0.000	0.000	2.454
O5	0.000	0.000	-2.454

	C1	C2	C3	O4	O5
C1		1.2789	1.2789	2.4544	2.4544
C2	1.2789		2.5577	1.1755	3.7332
C3	1.2789	2.5577		3.7332	1.1755
O4	2.4544	1.1755	3.7332		4.9088
O5	2.4544	3.7332	1.1755	4.9088

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: MP4=FULL/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: MP4=FULL/6-311+G(3df,2p)

States and conformations

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