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Experimental data for SiHCl3 (Trichlorosilane)

22 02 02 11 45
Other names
Silane, trichloro-; Silici-chloroforme; Siliciumchloroform; Silicochloroform; Trichloorsilaan; Trichloromonosilane; Trichlorosilane; Triclorosilano; Trichlorsilan;
INChI INChIKey SMILES IUPAC name
InChI=1S/Cl3HSi/c1-4(2)3/h4H ZDHXKXAHOVTTAH-UHFFFAOYSA-N Cl[SiH](Cl)Cl Trichlorosilane
State Conformation
1A1 C3V
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Hfg(298.15K) enthalpy of formation -496.22 4.20 kJ mol-1 JANAF
Hfg(0K) enthalpy of formation -491.15 4.20 kJ mol-1 JANAF
Entropy (298.15K) entropy 313.72 0.40 J K-1 mol-1 JANAF
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 16.15   kJ mol-1 JANAF
Heat Capacity (298.15K) heat capacity 75.44   J K-1 mol-1 webbook
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference
1 A1 2261   Shim      
2 A1 499   Shim      
3 A1 254   Shim      
4 E 811   Shim      
5 E 600   Shim      
6 E 176   Shim      

vibrational zero-point energy: 3094.0 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for SiHCl3 (Trichlorosilane).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
0.08247 0.08247 0.05003 1986Smi:110 C constrained

Calculated rotational constants for SiHCl3 (Trichlorosilane).
Product of moments of inertia moments of inertia
1.407629E+07amu3Å6   6.445493777388E-113gm3 cm6
Geometric Data
picture of Trichlorosilane

Point Group C3v


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4
rSiH 1.464   1 2 1977Tak/Mat:1633 rs value
rSiCl 2.020   1 3 1977Tak/Mat:1633 rs value
aClSiCl 109.4 3 1 4 1977Tak/Mat:1633
aHSiCl 109.5 2 1 3 1977Tak/Mat:1633

Cartesians
Atom x (Å) y (Å) z (Å)
Si1 0.0000 0.0000 0.4989
H2 0.0000 0.0000 1.9629
Cl3 0.0000 1.9041 -0.1754
Cl4 1.6490 -0.9521 -0.1754
Cl5 -1.6490 -0.9521 -0.1754

Atom - Atom Distances bond lengths
Distances in Å
  Si1 H2 Cl3 Cl4 Cl5
Si1   1.46402.02002.02002.0200
H2 1.4640   2.86322.86322.8632
Cl3 2.02002.8632   3.29813.2981
Cl4 2.02002.86323.2981   3.2981
Cl5 2.02002.86323.29813.2981  

Calculated geometries for SiHCl3 (Trichlorosilane).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
H2 Si1 Cl3 109.500 H2 Si1 Cl4 109.500
H2 Si1 Cl5 109.500 Cl3 Si1 Cl4 109.442
Cl3 Si1 Cl5 109.442 Cl4 Si1 Cl5 109.442

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-Si 1
Si-Cl 3

Connectivity
Atom 1 Atom 2
Si1 H2
Si1 Cl3
Si1 Cl4
Si1 Cl5
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A1

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
    11.940   webbook
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 1A1 C3v True       0.860 NSRDS-NBS10 DT C3v 1 1
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for SiHCl3 (Trichlorosilane).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 1A1 C3v True       C3v 1 1

Calculated electric quadrupole moments for SiHCl3 (Trichlorosilane).

References
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squib reference DOI
1977Tak/Mat:1633 H Takeo, C Matsumura "The Microwave Spectra, Molecular Structures, and Quadrupole Coupling Constants of Methyltrichlorosilane and Trichlorosilane" Bulletin of the Chemical Society of Japan Vol. 50 (1977) No. 6 P 1633-1634 10.1246/bcsj.50.1633
1986Smi:110 JG Smith "The Millimetre Wave Spectrum of Trichlorosilane" J. Mol. Spect. 120, 110-117, 1986 10.1016/0022-2852(86)90074-3
JANAF Chase, M.W., Jr.; Davies, C.A.; Downey, J.R., Jr.; Frurip, D.J.; McDonald, R.A.; Syverud, A.N., JANAF Thermochemical Tables (Third Edition), J. Phys. Chem. Ref. Data,Suppl. 1, 1985, 14, 1.  
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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