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Properties of substance:

titanium(IV) fluoride

Synonyms:

titanium tetrafluoride

Group of substances:

inorganic

Physical appearance:

white crystals

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

F4Ti

Structural formula as text:

TiF4

Molar/atomic mass: 123.89

Sublimation point (°C):

285.5

Solubility (g/100 g of solvent):

bromine trifluoride: soluble [Ref.]
diethyl ether: insoluble [Ref.]
ethanol: soluble [Ref.]
hydrogen fluoride : slightly soluble [Ref.]
pyridine: soluble [Ref.]
sulfuric acid: very soluble [Ref.]
water: reaction [Ref.]

Hygroscopic:

very hygroscopic

Density:

2.798 (20.5°C, g/cm3)

Reactions of synthesis:

  1. [Ref.1, Ref.2, Ref.3]
    Ti + 2F2 → TiF4
  2. Yeild 90%. [Ref.1aster]
    TiCl4 + 4HF → TiF4 + 4HCl

Vapour pressure (Torr):

4.3 (168.2°C)
8.4 (179.2°C)
63.6 (219.2°C)
203.7 (247.6°C)
382.7 (264.2°C)
479.9 (270.5°C)
666.5 (279.4°C)

Standard molar enthalpy (heat) of formation ΔfH (298 K, kJ/mol)

-1551.427 (g) [Ref.]
-1649.333 (s) [Ref.]

Standard molar Gibbs energy of formation ΔfG (298 K, kJ/mol)

-1515.221 (g) [Ref.]
-1559.179 (s) [Ref.]

Standard molar entropy S (298 K, J/(mol·K))

314.914 (g) [Ref.]
133.972 (s) [Ref.]

Molar heat capacity at constant pressure Cp (298 K, J/(mol·K))

84.543 (g) [Ref.]
114.265 (s) [Ref.]

Enthalpy (heat) of sublimation ΔsubH (kJ/mol)

90.2 (s) [Ref.]

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-96
  2. Inorganic Chemistry. - 1967. - Vol. 6, No. 12. - pp. 2208-2212 [DOI: 10.1021/ic50058a017]
  3. Горощенко Я.Г. Химия титана. - Киев: Наукова думка, 1970. - pp. 237-241 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 105 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru