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	hartrees
Energy at 0K	-264.405462
Energy at 298.15K	-264.403851
HF Energy	-263.368488
Nuclear repulsion energy	121.737092

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	Σ_g	2144	2065
2	Σ_g	751	723
3	Σ_u	2396	2307
4	Σ_u	1543	1485
5	Π_g	565	545
5	Π_g	565	545
6	Π_u	514	495
6	Π_u	514	495
7	Π_u	32	31
7	Π_u	32	31

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	2.452
O5	0.000	0.000	-2.452

	C1	C2	C3	O4	O5
C1		1.2755	1.2755	2.4525	2.4525
C2	1.2755		2.5510	1.1770	3.7279
C3	1.2755	2.5510		3.7279	1.1770
O4	2.4525	1.1770	3.7279		4.9049
O5	2.4525	3.7279	1.1770	4.9049

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/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: MP4=FULL/cc-pVTZ

States and conformations

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