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	hartrees
Energy at 0K	-2624.296821
Energy at 298.15K	-2624.296757
HF Energy	-2624.296821
Nuclear repulsion energy	315.751013

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁'	1037	942	0.00
2	A₂"	334	303	56.34
3	E'	1139	1035	138.63
3	E'	1139	1035	138.63
4	E'	387	351	52.28
4	E'	387	351	52.28

Atom	x (Å)	y (Å)
Se1	0.000	0.000
O2	0.000	1.553
O3	1.345	-0.777
O4	-1.345	-0.777

	Se1	O2	O3	O4
Se1		1.5533	1.5533	1.5533
O2	1.5533		2.6905	2.6905
O3	1.5533	2.6905		2.6905
O4	1.5533	2.6905	2.6905

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/TZVP

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	1.507
2	O	-0.502
3	O	-0.502
4	O	-0.502

<r²>	80.500
(<r²>)^1/2	8.972

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

using model chemistry: HF/TZVP

States and conformations

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