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Properties of substance:

sulfur hexafluoride

Group of substances:

inorganic

Physical appearance:

colorless gas

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

F6S

Structural formula as text:

SF6

Molar/atomic mass: 146.05

Sublimation point (°C):

-63.8

Decomposition temperature (°C):

1700-2700

Solubility (g/100 g of solvent):

ethanol: sparingly soluble [Ref.]
nitromethane: soluble [Ref.]
oxygen liquid: 1.14 (-183°C) [Ref.]
perfluoro-n-heptane: 1.1504 (4.5°C) [Ref.]
perfluoro-n-heptane: 1.054 (10°C) [Ref.]
perfluoro-n-heptane: 0.9698 (15.01°C) [Ref.]
perfluoro-n-heptane: 0.8636 (25°C) [Ref.]
perfluoro-n-heptane: 0.7991 (30.22°C) [Ref.]
water: 0.0096 (0.1°C) [Ref.]
water: 0.0049 (14.9°C) [Ref.]
water: 0.0036 (25°C) [Ref.]

Interatomic distances and bond angles:

Interatomic distances (in pm): 156,45 (S-F)

Density:

1.85 (-50°C, g/cm3)
0.0065 (20°C, g/cm3)

Reactions of synthesis:

  1. [Ref.1, Ref.2, Ref.3aster]
    S + 3F2 → SF6
  2. Yeild 100%. [Ref.1]
    SF4 + F2 → SF6

Speed sound (m/s):

146.3 (30°C, aggregative state - gas, 750 мм.рт.ст.)

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

-1221 (g)

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

292 (g)

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

97.5 (g)

Critical temperature (°C):

45.56

References:

  1. Chemistry - A European Journal. - 2020. - Vol. 26, No. 31. - pp. 6956-6958 [DOI: 10.1002/chem.201904493]
  2. Inorganic Syntheses. - Vol. 1. - New York and London, 1939. - pp. 121-122
  3. Journal of Fluorine Chemistry. - 1972-1973. - Vol. 2, No. 4. - pp. 349-359
  4. Гринвуд Н., Эрншо А. Химия элементов. - Т.2. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 40, 42 [Russian]
  5. Исикава Н., Кобаяси Ё. Фтор: химия и применение. - М.: Мир, 1982. - pp. 69-71 [Russian]
  6. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 326 [Russian]
  7. Рысс И.Г. Химия фтора и его неорганических соединений. - М., 1956. - pp. 160-165 [Russian]
  8. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 202-203 [Russian]
  9. Успехи химии. - 1975. - Т.44, №2. - pp. 193-213 [Russian]
  10. Фтор и его соединения. – Под ред. Саймонса Дж., Т. 1. - М.: ИИЛ, 1953. - pp. 80-82 [Russian]
  11. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 332 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru