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Properties of substance:

cobalt(II) fluoride

Group of substances:

inorganic

Physical appearance:

tetragonal crystals

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

CoF2

Structural formula as text:

CoF2

Molar/atomic mass: 96.93

Melting point (°C):

1200

Boiling point (°C):

1400

Solubility (g/100 g of solvent):

ammonia liquid : insoluble [Ref.]
benzene: insoluble [Ref.]
diethyl ether: insoluble [Ref.]
ethanol: insoluble [Ref.]
hydrogen fluoride : 0.04 (-23.2°C) [Ref.]
hydrogen fluoride : 0.033 (-4.4°C) [Ref.]
hydrogen fluoride : 0.36 (14.2°C) [Ref.]
hydrogen fluoride 3%: 3.47 (20°C) [Ref.]
hydrogen fluoride 3%: 5.74 (100°C) [Ref.]
pyridine: insoluble [Ref.]
water: 1.5 (25°C) [Ref.]

Density:

4.46 (25°C, g/cm3)

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

-665.7 (s)

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

82 (s)

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

68.8 (s)

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

-366.1 (g)

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

270 (g)

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

52.3 (g)

Neel temperature (K):

37.7

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 418
  2. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 142-143 [Russian]
  3. Рысс И.Г. Химия фтора и его неорганических соединений. - М., 1956. - pp. 576-579 [Russian]
  4. Справочник по растворимости. - Т.1, Кн.2. - М.-Л.: ИАН СССР, 1962. - pp. 1004 [Russian]
  5. Фтор и его соединения. – Под ред. Саймонса Дж., Т. 1. - М.: ИИЛ, 1953. - pp. 60 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru