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	hartrees
Energy at 0K	-264.024207
Energy at 298.15K	-264.022812
HF Energy	-263.301193
Nuclear repulsion energy	122.141964

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	Σ_g	2359	2218	0.00
2	Σ_g	804	756	0.00
3	Σ_u	2444	2298	4047.59
4	Σ_u	1713	1610	111.39
5	Π_g	617	580	0.00
5	Π_g	617	580	0.00
6	Π_u	591	556	85.02
6	Π_u	591	556	85.02
7	Π_u	40	38	1.55
7	Π_u	40	38	1.55

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	0.000
C2	0.000	0.000	1.287
C3	0.000	0.000	-1.287
O4	0.000	0.000	2.446
O5	0.000	0.000	-2.446

	C1	C2	C3	O4	O5
C1		1.2869	1.2869	2.4459	2.4459
C2	1.2869		2.5738	1.1590	3.7328
C3	1.2869	2.5738		3.7328	1.1590
O4	2.4459	1.1590	3.7328		4.8918
O5	2.4459	3.7328	1.1590	4.8918

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=FULL/cc-pVDZ

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=FULL/cc-pVDZ

States and conformations

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