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Properties of substance:

zirconium(IV) bromide

Synonyms:

zirconium tetrabromide

Group of substances:

inorganic

Physical appearance:

colorless cubic crystals

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

Br4Zr

Structural formula as text:

ZrBr4

Molar/atomic mass: 410.84

Sublimation point (°C):

355

Solubility (g/100 g of solvent):

acetone: soluble [Ref.]
ammonia liquid : soluble [Ref.]
carbon tetrachloride: soluble [Ref.]

Hygroscopic:

yes

Reactions of synthesis:

  1. [Ref.1aster]
    ZrO2 + 2C + 2Br2 → ZrBr4 + 2CO

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

-761 (s)

Standard molar entropy S0 (298.15 K, J/(mol·K)):

225 (s)

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

125 (s)

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

-644 (g)

Standard molar entropy S0 (298.15 K, J/(mol·K)):

412 (g)

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

102 (g)

References:

  1. Inorganic Syntheses. - Vol. 1. - New York and London, 1939. - pp. 49-51
  2. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 218-219 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru