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	hartrees
Energy at 0K	-2624.443339
Energy at 298.15K	-2624.442840
HF Energy	-2624.443339
Nuclear repulsion energy	292.974717

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁'	824	824	0.00
2	A₂"	219	219	33.83
3	E'	915	915	37.19
3	E'	915	915	37.01
4	E'	315	315	26.01
4	E'	315	315	25.91

Atom	x (Å)	y (Å)
Se1	0.000	0.000
O2	0.000	1.674
O3	1.450	-0.837
O4	-1.450	-0.837

	Se1	O2	O3	O4
Se1		1.6741	1.6741	1.6741
O2	1.6741		2.8996	2.8996
O3	1.6741	2.8996		2.8996
O4	1.6741	2.8996	2.8996

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: M06-2X/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	1.726
2	O	-0.575
3	O	-0.575
4	O	-0.575

<r²>	90.648
(<r²>)^1/2	9.521

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

using model chemistry: M06-2X/6-31G

States and conformations

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