CCCBDB listing of experimental data page 2

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Property	Value	Uncertainty	units	Reference
Hfg(298.15K)	34.70	1.50	kJ mol^-1	Gurvich
Hfg(0K)	43.92	1.50	kJ mol^-1	Gurvich
Entropy (298.15K)	204.21		J K^-1 mol^-1	Gurvich
Integrated Heat Capacity (0 to 298.15K)	10.53		kJ mol^-1	Gurvich
Heat Capacity (298.15K)	42.79		J K^-1 mol^-1	Gurvich

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	2187		Shim					sym stretch
2	E	975		Shim					deg. deform
3	T₂	2191		Shim	282.0	3.0	1994Coa/McK:269		deg. stretch
4	T₂	914		Shim	381.0	4.0	1994Coa/McK:269		deg. deform

Description	Value	unc.	Connectivity				Reference	Comment
Description	Value	unc.	Atom 1	Atom 2	Atom 3	Atom 4	Reference	Comment
rSiH	1.480	0.000	1	2			1955Boyd:922	+- 0.0004
aHSiH	109.47122		2	1	3			by symmetry

Atom	x (Å)	y (Å)	z (Å)
Si1	0.0000	0.0000	0.0000
H2	0.8544	0.8544	0.8544
H3	-0.8544	-0.8544	0.8544
H4	-0.8544	0.8544	-0.8544
H5	0.8544	-0.8544	-0.8544

	Si1	H2	H3	H4	H5
Si1		1.4798	1.4798	1.4798	1.4798
H2	1.4798		2.4165	2.4165	2.4165
H3	1.4798	2.4165		2.4165	2.4165
H4	1.4798	2.4165	2.4165		2.4165
H5	1.4798	2.4165	2.4165	2.4165

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
H2	Si1	H3	109.471	H2	Si1	H4	109.471
H2	Si1	H5	109.471	H3	Si1	H4	109.471
H3	Si1	H5	109.471	H4	Si1	H5	109.471

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	T_d	True				0.000	NSRDS-NBS10		T_d	0	0

squib	reference	DOI
1955Boyd:922	DRJ Boyd, "Infrared Spectrum of Trideuterosilane and the structure of the silane molecule" J. Chem. Phys. 23(5), 922, 1955	10.1063/1.1742148
1994Coa/McK:269	AM Coats, DC McKean, D Steele "Infrared Intensities of nu3 and nu4 in SiH4, GeH4, and SnH4" J. Mol. Struct. 320(1994) 269-280	10.1016/0022-2860(94)07974-9
1997Oln/Can:59	TN Olney, NM Cann, G Cooper, CE Brion, Absolute scale determination for photoabsorption spectra and the calculation of molecular properties using dipole sum-rules, Chem. Phys. 223 (1997) 59-98	10.1016/S0301-0104(97)00145-6
Gurvich	Gurvich, L.V.; Veyts, I. V.; Alcock, C. B., Thermodynamic Properties of Individual Substances, Fouth Edition, Hemisphere Pub. Co., New York, 1989
NSRDS-NBS10	R. D. Nelson Jr., D. R. Lide, A. A. Maryott "Selected Values of electric dipole moments for molecules in the gas phase" NSRDS-NBS10, 1967	10.6028/NBS.NSRDS.10
Shim	Shimanouchi, T. , Tables of Molecular Vibrational Frequencies, Consolidated Volu	10.6028/NBS.NSRDS.39
webbook	NIST Chemistry Webbook (http://webbook.nist.gov/chemistry)	10.18434/T4D303

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Experimental data for SiH4 (Silane)

Experimental data for SiH₄ (Silane)