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	hartrees
Energy at 0K	-2623.458845
Energy at 298.15K	-2623.458536
HF Energy	-2623.458845
Nuclear repulsion energy	306.617207

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁'	910	902	0.00
2	A₂"	262	260	21.39
3	E'	1025	1015	83.40
3	E'	1025	1015	83.42
4	E'	337	334	20.72
4	E'	337	334	20.72

Atom	x (Å)	y (Å)
Se1	0.000	0.000
O2	0.000	1.600
O3	1.385	-0.800
O4	-1.385	-0.800

	Se1	O2	O3	O4
Se1		1.5996	1.5996	1.5996
O2	1.5996		2.7706	2.7706
O3	1.5996	2.7706		2.7706
O4	1.5996	2.7706	2.7706

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: LSDA/aug-cc-pVTZ

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	1.913
2	O	-0.638
3	O	-0.638
4	O	-0.638

<r²>	83.422
(<r²>)^1/2	9.134

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

using model chemistry: LSDA/aug-cc-pVTZ

States and conformations

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