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Properties of substance:

selenium hexafluoride

Group of substances:

inorganic

Physical appearance:

colorless gas

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

F6Se

Structural formula as text:

SeF6

Molar/atomic mass: 192.95

Sublimation point (°C):

-46.6

Numerical data:

LCt50 (mg·min/l): 14.202

Reactions of synthesis:

  1. [Ref.1aster, Ref.2aster]
    Se + 3F2 → SeF6

Vapour pressure (Torr):

1 (-118.6°C)
10 (-99.2°C)
100 (-74.3°C)

Dipole moment (D):

0 (20°C)

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

-1029 (g)

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

-928.9 (g)

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

313.8 (g)

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

110.5 (g)

Molar enthalpy (heat) of fusion ΔfusH (kJ/mol):

7.1

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

18.3

References:

  1. Inorganic Syntheses. - Vol. 1. - New York and London, 1939. - pp. 121-122
  2. Вредные вещества в промышленности: Справочник для химиков, инженеров и врачей. - 7-е изд., Т.3. - Л.: Химия, 1976. - pp. 81 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 96 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru