CCCBDB listing of experimental data page 2

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Mode Number	Symmetry	Frequency			Intensity			Comment	Description
Mode Number	Symmetry	Fundamental(cm^-1)	Harmonic(cm^-1)	Reference	(km mol^-1)	unc.	Reference	Comment	Description
1	A₁	747		1976Pil/Kum:226-228
2	A₁	571
3	A₁	361						reassigned from 7
4	A₁	156
5	A₂
6	B₁	733
7	B₁	250						reassigned from 9
8	B₂	622
9	B₂	409						reassigned from 3

Description	Value	unc.	Connectivity				Reference	Comment
Description	Value	unc.	Atom 1	Atom 2	Atom 3	Atom 4	Reference	Comment
rFSe	1.682	0.000	1	4			1968Bow/Bro:454-460
rFSe	1.771	0.000	1	2			1968Bow/Bro:454-460
aFSeF	100.55	0.03	4	1	5		1968Bow/Bro:454-460
aFSeF	169.2	0.2	2	1	3		1968Bow/Bro:454-460

Atom 1	Atom 2
Se1	F2
Se1	F3
Se1	F4
Se1	F5

State	Config	State description	Conf description	Exp. min.	Dipole (Debye)				Reference	comment	Point Group	Components
State	Config	State description	Conf description	Exp. min.	x	y	z	total	Reference	comment	Point Group	dipole	quadrupole
1	1	¹A₁	C_2v	True			1.779	1.779	1968Bow/Bro:454-460	MW +-0.057 D μ₀	C_2v	1	2

State	Config	State description	Conf description	Exp. min.	Quadrupole (D Å)			Reference	comment	Point Group	Components
State	Config	State description	Conf description	Exp. min.	xx	yy	zz	Reference	comment	Point Group	dipole	quadrupole
1	1	¹A₁	C_2v	True						C_2v	1	2

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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squib	reference	DOI
1968Bow/Bro:454-460	IC Bowater, RD Brown, FR Burden "Microwave spectrum, dipole moment, and structure analysis of selenium tetrafluoride" J. Mol. Spec. 28, 454-460, 1968	10.1016/0022-2852(68)90178-1
1976Pil/Kum:226-228	MGK Pillai, V Kumar "Classification of fundamental frequencies of selenium tetrafluoride and tellerium tetrafluoride based on a modified UBFF" Indian J. of Pure and Appl. Phys.

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Experimental data for SeF4 (Selenium tetrafluoride)

Experimental data for SeF₄ (Selenium tetrafluoride)