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	hartrees
Energy at 0K	-2621.966023
Energy at 298.15K	-2621.965517
HF Energy	-2621.538930
Nuclear repulsion energy	292.629945

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁'	821	770	0.00
2	A₂"	210	196	40.03
3	E'	909	852	44.13
3	E'	909	852	44.13
4	E'	320	300	27.83
4	E'	320	300	27.83

Atom	x (Å)	y (Å)
Se1	0.000	0.000
O2	0.000	1.676
O3	1.452	-0.838
O4	-1.452	-0.838

	Se1	O2	O3	O4
Se1		1.6761	1.6761	1.6761
O2	1.6761		2.9030	2.9030
O3	1.6761	2.9030		2.9030
O4	1.6761	2.9030	2.9030

atom1	atom2	atom3	angle		atom1	atom2	atom3	angle
O2	Se1	O3	120.000		O2	Se1	O4	120.000
O3	Se1	O4	120.000

All results from a given calculation for SeO₃ (selenium trioxide)

using model chemistry: CISD/6-31G

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 SeO3 (selenium trioxide)

using model chemistry: CISD/6-31G

States and conformations

All results from a given calculation for SeO₃ (selenium trioxide)