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	hartrees
Energy at 0K	-2625.120466
Energy at 298.15K	-2625.120215
HF Energy	-2625.120466
Nuclear repulsion energy	306.251047

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁'	950	902	0.00
2	A₂"	280	266	26.89
3	E'	1074	1020	75.24
3	E'	1074	1020	75.22
4	E'	352	334	26.35
4	E'	352	334	26.35

Atom	x (Å)	y (Å)
Se1	0.000	0.000
O2	0.000	1.602
O3	1.387	-0.801
O4	-1.387	-0.801

	Se1	O2	O3	O4
Se1		1.6015	1.6015	1.6015
O2	1.6015		2.7739	2.7739
O3	1.6015	2.7739		2.7739
O4	1.6015	2.7739	2.7739

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: B1B95/6-31G*

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	1.330
2	O	-0.443
3	O	-0.443
4	O	-0.443

<r²>	83.181
(<r²>)^1/2	9.120

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

using model chemistry: B1B95/6-31G*

States and conformations

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