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	hartrees
Energy at 0K	-2624.568025
Energy at 298.15K	-2624.567311
HF Energy	-2624.568025
Nuclear repulsion energy	284.084431

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁'	727	721	0.00
2	A₂"	186	184	18.32
3	E'	812	806	27.34
3	E'	812	806	27.34
4	E'	285	283	16.28
4	E'	285	283	16.28

Atom	x (Å)	y (Å)
Se1	0.000	0.000
O2	0.000	1.726
O3	1.495	-0.863
O4	-1.495	-0.863

	Se1	O2	O3	O4
Se1		1.7265	1.7265	1.7265
O2	1.7265		2.9904	2.9904
O3	1.7265	2.9904		2.9904
O4	1.7265	2.9904	2.9904

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/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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Number	Element	Mulliken
1	Se	1.433
2	O	-0.478
3	O	-0.478
4	O	-0.478

<r²>	94.362
(<r²>)^1/2	9.714

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

using model chemistry: BLYP/6-31G

States and conformations

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