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	hartrees
Energy at 0K	-2596.986869
Energy at 298.15K	-2596.985418
HF Energy	-2596.986869
Nuclear repulsion energy	276.839549

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁'	654	605	0.00
2	A₂"	67	62	3.78
3	E'	732	677	5.01
3	E'	732	677	5.01
4	E'	184	170	6.12
4	E'	184	170	6.12

Atom	x (Å)	y (Å)
Se1	0.000	0.000
O2	0.000	1.772
O3	1.534	-0.886
O4	-1.534	-0.886

	Se1	O2	O3	O4
Se1		1.7717	1.7717	1.7717
O2	1.7717		3.0686	3.0686
O3	1.7717	3.0686		3.0686
O4	1.7717	3.0686	3.0686

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: BLYP/STO-3G

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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Number	Element	Mulliken
1	Se	0.676
2	O	-0.225
3	O	-0.225
4	O	-0.225

<r²>	95.050
(<r²>)^1/2	9.749

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

using model chemistry: BLYP/STO-3G

States and conformations

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