Enthalpy of development (Hfg),Entropy, integrated heat capacity (0 K to 298.15 K) (HH), heat Capacity (Cp)PropertyValueUncertaintyunitsReferenceComment
Hfg(298.15K) 34.701.50kJ mol-1Gurvich
Hfg(0K) 43.921.50kJ mol-1Gurvich
Entropy (298.15K)
*
204.21J K-1 mol-1Gurvich
Integrated heat Capacity (0 come 298.15K)
*
10.53kJ mol-1Gurvich
Heat volume (298.15K)
*
42.79J K-1 mol-1Gurvich
Information can additionally be discovered for this varieties in the aufdercouch.net Chemistry Webbook
Vibrational levels (cm-1)
*
Mode NumberSymmetryFrequencyIntensityCommentDescriptionFundamental(cm-1)Harmonic(cm-1)Reference(km mol-1)unc.Reference
1A12187 Shim
2E975 Shim
3T22191 Shim282.03.0 1994Coa/McK:269
4T2914 Shim381.04.0 1994Coa/McK:269
vibrational zero-point energy: 6726.0 cm-1 (from fundamental vibrations)Calculated vibrational frequencies because that SiH4 (Silane).

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Rotational Constants (cm-1)
*
*
203.6934amu3Å69.32706468642334E-118gm3 cm6
Geometric Data
*
Distances in ÅSi1H2H3H4H5Si11.47981.47981.47981.4798H21.47982.41652.41652.4165H31.47982.41652.41652.4165H41.47982.41652.41652.4165H51.47982.41652.41652.4165
Calculated geometriesfor SiH4 (Silane).

Experimental Bond angle (degrees) native cartesians

*
atom1atom2atom3angle atom1atom2atom3angle
H2Si1H3109.471 H2Si1H4109.471
H2Si1H5109.471 H3Si1H4109.471
H3Si1H5109.471 H4Si1H5109.471
Bond descriptions

Examples: C-C solitary bond, C=C, twin bond, C#C triple bond, C:C fragrant bondBond TypeCount
H-Si4
ConnectivityAtom 1Atom 2
Si1H2
Si1H3
Si1H4
Si1H5

Electronic energy levels (cm-1)Energy (cm-1)Degeneracyreferencedescription
01 1A1
Ionization Energies (eV)Ionization EnergyI.E. Unc.vertical I.E. V.I.E. Unc.reference
11.0000.02012.300webbook

Dipole, Quadrupole and PolarizabilityElectric dipole moment
*
StateConfigState descriptionConf descriptionExp. Min.Dipole (Debye)ReferencecommentPoint GroupComponentsx y z totaldipolequadrupole
111A1TdTrue0.000NSRDS-NBS10Td00
Experimental dipole measure up abbreviations: MW microwave; DT Dielectric through Temperature variation; DR Indirect (usually an upper limit); MB molecular beamCalculated electrical dipole moments for SiH4 (Silane).Electric quadrupole moment
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StateConfigState descriptionConf descriptionExp. Min.Quadrupole (D Å)ReferencecommentPoint GroupComponentsxxyyzzdipolequadrupole
111A1TdTrueTd00
Calculated electrical quadrupole moments for SiH4 (Silane). Electric dipole polarizability (Å3)
*
alpha unc.Reference
4.7771997Oln/Can:59
Calculated electric dipole polarizability for SiH4 (Silane).

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aufdercouch.net.gov.squibreferenceDOI
1955Boyd:922 DRJ Boyd, "Infrared Spectrum that Trideuterosilane and the framework 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 that 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 range determination because that photoabsorption spectra and the calculation of molecular properties making use of 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 separation, personal, instance Substances, Fouth Edition, Hemisphere Pub. Co., new York, 1989
NSRDS-NBS10 R. D. Nelson Jr., D. R. Lide, A. A. Maryott "Selected worths of electrical 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 aufdercouch.net Chemistry Webbook (http://webbook.aufdercouch.net.gov/chemistry) 10.18434/T4D303
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