Silicon tetrachloride (data page)

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This page provides supplementary chemical data on silicon tetrachloride.

Contents

[edit] Material Safety Data Sheet

The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source such as SIRI, and follow its directions.

[edit] Structure and properties

Structure and properties
Index of refraction, nD 1.41156 at 25 °C
Abbe number ?
Dielectric constant, εr 2.248 ε0 at 0 °C
Bond strength 381 kJ/mol (Si-Cl)
Bond length  ?
Bond angle  ?
Dipole#Molecular dipoles 0 D
Magnetic susceptibility -87.5
Viscosity 99.4 mPa.s at 25 °C
96.2 mPa.s at 50 °C
Thermal conductivity 0.099 W/(m K) at 25 °C
0.096 W/(m K) at 50 °C

[edit] Thermodynamic properties

Phase behavior
Triple point  ? K (? °C), ? Pa
Critical point 508.1 K (235.0 °C), 3.593 MPa, 0.326 dm3/mol
Std enthalpy change
of fusion, ΔfusHo		 7.60 kJ/mol
Std entropy change
of fusion, ΔfusSo		  ? J/(mol·K)
Std enthalpy change
of vaporization, ΔvapHo		 28.7 kJ/mol
Std entropy change
of vaporization, ΔvapSo		  ? J/(mol·K)
Solid properties
Std enthalpy change
of formation, ΔfHosolid		  ? kJ/mol
Standard molar entropy,
Sosolid		  ? J/(mol K)
Heat capacity, cp  ? J/(mol K)
Liquid properties
Std enthalpy change
of formation, ΔfHoliquid		 -687.0 kJ/mol
Std Gibbs free energy
of formation, ΔfGoliquid		 -619.8 kJ/mol
Standard molar entropy,
Soliquid		 239.7 J/(mol K)
Heat capacity, cp 145.3 J/(mol K)
Gas properties
Std enthalpy change
of formation, ΔfHogas		 -657.0 kJ/mol
Std Gibbs free energy
of formation, ΔfGogas		 -617.0 kJ/mol
Standard molar entropy,
Sogas		 330.7 J/(mol K)
Heat capacity, cp 90.3 J/(mol K)

[edit] Spectral data

UV-Vis
λmax  ? nm
Extinction coefficient, ε  ?
IR
Major absorption bands 610, 642 cm−1
NMR
Proton NMR  
Carbon-13 NMR  
Other NMR data  
MS
Masses of
main fragments		 133, 135, 170

[edit] References

Except where noted otherwise, data relate to standard ambient temperature and pressure.

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