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	hartrees
Energy at 0K	-2624.826013
Energy at 298.15K	-2624.825675
HF Energy	-2624.826013
Nuclear repulsion energy	303.353587

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁'	905	871	0.00
2	A₂"	271	261	22.32
3	E'	1012	974	89.90
3	E'	1012	974	89.88
4	E'	327	315	23.80
4	E'	327	315	23.80

Atom	x (Å)	y (Å)
Se1	0.000	0.000
O2	0.000	1.620
O3	1.403	-0.810
O4	-1.403	-0.810

	Se1	O2	O3	O4
Se1		1.6198	1.6198	1.6198
O2	1.6198		2.8055	2.8055
O3	1.6198	2.8055		2.8055
O4	1.6198	2.8055	2.8055

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: TPSSh/6-31+G**

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	1.205
2	O	-0.402
3	O	-0.402
4	O	-0.402

<r²>	84.949
(<r²>)^1/2	9.217

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

using model chemistry: TPSSh/6-31+G**

States and conformations

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