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Properties of substance:

chromium hexacarbonyl

Group of substances:

inorganic

Physical appearance:

colorless rhombic crystals

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

C6CrO6

Structural formula as text:

Cr(CO)6

Molar/atomic mass: 214.06

Sublimation point (°C):

151

Decomposition temperature (°C):

130

Solubility (g/100 g of solvent):

acetic acid: very slightly soluble [Ref.]
benzene: very slightly soluble [Ref.]
carbon tetrachloride: 2 (20°C) [Ref.]
chloroform: sparingly soluble [Ref.]
diethyl ether: very slightly soluble [Ref.]
ethanol: very slightly soluble [Ref.]
iron pentacarbonyl: very slightly soluble [Ref.]
methanol: insoluble [Ref.]
nickel tetracarbonyl: very slightly soluble [Ref.]
water: insoluble [Ref.]

Numerical data:

Year of discovery: 1926

Density:

1.77 (20°C, g/cm3)

Vapour pressure (Torr):

1 (36°C)
10 (68°C)
100 (107.4°C)

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

-1077.4 (s)

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

-970.4 (s)

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

314 (s)

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

240 (s)

ΔHsublimation (kJ/mol):

69.5

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

-1004 (g)

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

481 (g)

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

204.2 (g)

LD50 (mg/kg):

230 (white rats, oral)
150 (white mice, oral)

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-58
  2. Белозерский Н.А. Карбонилы металлов. - М.: ГНТИЛЧЦМ, 1958. - pp. 267-282 [Russian]
  3. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 514-515 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 110 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru