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	hartrees
Energy at 0K	-2624.218301
Energy at 298.15K	-2624.218261
HF Energy	-2624.218301
Nuclear repulsion energy	314.907498

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁'	1017	924	0.00
2	A₂"	339	308	54.90
3	E'	1116	1014	121.77
3	E'	1116	1014	121.77
4	E'	401	364	50.10
4	E'	401	364	50.10

Atom	x (Å)	y (Å)
Se1	0.000	0.000
O2	0.000	1.558
O3	1.349	-0.779
O4	-1.349	-0.779

	Se1	O2	O3	O4
Se1		1.5575	1.5575	1.5575
O2	1.5575		2.6977	2.6977
O3	1.5575	2.6977		2.6977
O4	1.5575	2.6977	2.6977

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: HF/6-311G**

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	1.571
2	O	-0.524
3	O	-0.524
4	O	-0.524

<r²>	80.619
(<r²>)^1/2	8.979

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

using model chemistry: HF/6-311G**

States and conformations

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