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Properties of substance:

tungsten(VI) oxytetrachloride

Group of substances:

inorganic

Physical appearance:

red tetragonal crystals

Empirical formula (Hill's system for organic substances):

Cl4OW

Structural formula as text:

WOCl4

Molar/atomic mass: 341.65

Melting point (°C):

209.5

Boiling point (°C):

224

Solubility (g/100 g of solvent):

benzene: soluble [Ref.]
carbon disulphide: soluble [Ref.]
sulfur dichloride: soluble [Ref.]
sulfur monochloride: soluble [Ref.]
water: reaction [Ref.]

Density:

3.95 (g/cm3)

Reactions:

  1. [Ref.1]
    WOCl4 + 3H2O → H2WO4 + 4HCl

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

-718.8 (s)

Molar enthalpy (heat) of fusion ΔfusH (kJ/mol):

33

Enthalpy (heat) of vaporization ΔvapH (kJ/mol):

43

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

-633 (g)

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-97
  2. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 110-111 [Russian]
  3. Зеликман А.Н., Никитина Л.С. Вольфрам. - М.: Металлургия, 1978. - pp. 100 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru