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	hartrees
Energy at 0K	-264.364249
Energy at 298.15K
HF Energy	-263.379450
Nuclear repulsion energy	123.360382

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.270
C3	0.000	0.000	-1.270
O4	0.000	0.000	2.421
O5	0.000	0.000	-2.421

	C1	C2	C3	O4	O5
C1		1.2700	1.2700	2.4213	2.4213
C2	1.2700		2.5401	1.1513	3.6914
C3	1.2700	2.5401		3.6914	1.1513
O4	2.4213	1.1513	3.6914		4.8427
O5	2.4213	3.6914	1.1513	4.8427

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=FULL/daug-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=FULL/daug-cc-pVTZ

States and conformations

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