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
2	A₂	838		webbook
4	E'	938		webbook

Description	Value	unc.	Connectivity				Reference	Comment
Description	Value	unc.	Atom 1	Atom 2	Atom 3	Atom 4	Reference	Comment
rSiH	1.460	0.010	1	2			1994Dav/Smi:6166	re
aHSiH	120		2	1	3			by symmetry

Atom	y (Å)	z (Å)
Si1	0.0000	0.0000
H2	0.0000	1.4600
H3	1.2644	-0.7300
H4	-1.2644	-0.7300

	Si1	H2	H3	H4
Si1		1.4600	1.4600	1.4600
H2	1.4600		2.5288	2.5288
H3	1.4600	2.5288		2.5288
H4	1.4600	2.5288	2.5288

atom1	atom2	atom3	angle		atom1	atom2	atom3	angle
H2	Si1	H3	120.000		H2	Si1	H4	120.000
H3	Si1	H4	120.000

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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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^'	D_3h	True							D_3h	0	1

squib	reference	DOI
1994Dav/Smi:6166	P. B. Davies and D. M. Smith "Diode laser spectroscopy and coupled analysis of the nu2 and nu4 fundamental bands of SiH3+" J. Chem. Phys. 100(9) 6166, 1995	10.1063/1.467081
webbook	NIST Chemistry Webbook (http://webbook.nist.gov/chemistry)	10.18434/T4D303

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Experimental data for SiH3 (Silyl radical)

Experimental data for SiH₃ (Silyl radical)