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	hartrees
Energy at 0K	-264.111807
Energy at 298.15K
HF Energy	-263.367315
Nuclear repulsion energy	123.407052

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2375	2221	0.00
2	Σ_g	808	756	0.00
3	Σ_u	2444	2285	4691.01
4	Σ_u	1728	1616	113.77
5	Π_g	604	565	0.00
5	Π_g	604	565	0.00
6	Π_u	513	479	92.35
6	Π_u	513	479	92.35
7	Π_u	181i	169i	8.42
7	Π_u	181i	169i	8.42

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	2.420
O5	0.000	0.000	-2.420

	C1	C2	C3	O4	O5
C1		1.2701	1.2701	2.4205	2.4205
C2	1.2701		2.5402	1.1504	3.6906
C3	1.2701	2.5402		3.6906	1.1504
O4	2.4205	1.1504	3.6906		4.8410
O5	2.4205	3.6906	1.1504	4.8410

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: MP3/TZVP

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: MP3/TZVP

States and conformations

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