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Properties of substance:

molybdenum hexacarbonyl

Group of substances:

inorganic

Physical appearance:

white rhombic crystals

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

C6MoO6

Structural formula as text:

Mo(CO)6

Molar/atomic mass: 264.001

Melting point (°C):

151

Decomposition temperature (°C):

151

CAS №: 13939-06-5

Solubility (g/100 g of solvent):

1-butanol: 0.39 (20°C) [Ref.]
acetone: 1.95 (20°C) [Ref.]
benzene: 1.53 (20°C) [Ref.]
carbon tetrachloride: 0.7 (0°C) [Ref.]
carbon tetrachloride: 1.53 (20°C) [Ref.]
carbon tetrachloride: 2.28 (30°C) [Ref.]
carbon tetrachloride: 3.35 (40°C) [Ref.]
diethyl ether: 2.15 (20°C) [Ref.]
ethanol: 0.25 (20°C) [Ref.]
ethanol: 0.54 (30°C) [Ref.]
hexane: soluble [Ref.]
iron pentacarbonyl: 3.33 (-10°C) [Ref.]
iron pentacarbonyl: 3.58 (0°C) [Ref.]
iron pentacarbonyl: 5.15 (20°C) [Ref.]
iron pentacarbonyl: 6.25 (30°C) [Ref.]
iron pentacarbonyl: 10.91 (40°C) [Ref.]
nickel tetracarbonyl: 2.31 (-10°C) [Ref.]
nickel tetracarbonyl: 4.11 (20°C) [Ref.]
toluene: 1.31 (20°C) [Ref.]
water: insoluble [Ref.]

Numerical data:

Year of discovery: 1908

Density:

1.96 (20°C, g/cm3)

Vapour pressure (Torr):

1 (45.5°C)
10 (77°C)
100 (115°C)

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

-983.2 (s)

Standard molar Gibbs energy of formation ΔfG0 (298.15 K, kJ/mol):

-878.6 (s)

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

327 (s)

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

242.3 (s)

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

-913 (g)

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

503 (g)

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

211 (g)

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-76
  2. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 514-515 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 81 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru