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Properties of substance:

diphosphine

Group of substances:

inorganic

Physical appearance:

colorless liquid

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

H4P2

Structural formula as text:

P2H4

Molar/atomic mass: 65.98

Melting point (°C):

-99

Boiling point (°C):

65.2

Solubility (g/100 g of solvent):

ethanol: soluble [Ref.]
oil of turpentine: soluble [Ref.]
water: insoluble [Ref.]

Density:

1.012 (20°C, g/cm3)

Reactions:

  1. [Ref.1]
    9P2H4 + 3CH3(CH2)3Li → Li3P7 + 11PH3 + 3CH3CH2CH2CH3

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

20.9 (g)

Enthalpy (heat) of vaporization ΔvapH (kJ/mol):

25.5

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

-5 (l)

References:

  1. CRC Handbook of Chemistry and Physics. - CRC Press, 2002. - pp. 228
  2. Holleman A.F., Wiberg E., Wiberg N. Lehrbuch der Anorganischen Chemie. - Berlin: Walter de Gruyter, 1995. - pp. 745-746
  3. Жигач А.Ф., Стасиневич Д.С. Химия гидридов. - Л.: Химия, 1969. - pp. 621-626 [Russian]
  4. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 444-445 [Russian]
  5. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 108 [Russian]
  6. Успехи химии. - 1969. - Т.38, №6. - pp. 1094-1095 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru