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Properties of substance:

xenon difluoride


Physical appearance:

colorless tetragonal crystals

Empirical formula (Hill's system):

F2Xe

Structural formula:

XeF2

Molar/atomic mass: 169.3

Melting point (°C):

129.03

Boiling point (°C):

155

Destruction point (°C):

600

Solubility (g/100 g of solvent):

nitrogen(III) fluoride oxide - hydrogen fluoride: 1085 (16.8°C) [Ref.]
liquid ammonia: insoluble [Ref.]
acetonitrile: 21.5 (0°C) [Ref.]
acetonitrile: 41 (21°C) [Ref.]
water: 2.5 (0°C) [Ref.]
tungsten(VI) fluoride: sparingly soluble [Ref.]
molybdenum hexafluoride : sparingly soluble [Ref.]
dimethylsulphoxide: soluble [Ref.]
sulfur dioxide: soluble [Ref.]
bromine pentafluoride: 189.6 (20°C) [Ref.]
iodine pentafluoride: 153.8 [Ref.]
chlorine pentafluoride: insoluble [Ref.]
pyridine: soluble [Ref.]
bromine trifluoride: soluble [Ref.]
hydrogen fluoride : 108 (-2°C) [Ref.]
hydrogen fluoride : 167.3 (30°C) [Ref.]

Density:

4.32 (25°C, g/cm3)

Vapour pressure (Torr):

3.8 (25°C)
318 (100°C)

    Electrode potential:

    XeF2 + 2H+ + 2e- → Xe + 2HF, E = 2.64 V (water, 25°C)

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

    -176 (s)

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

    16.8

    ΔHsublimation (kJ/mol):

    50.6

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

    -107.5 (g)

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

    259.403 (g)

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

    54.108 (g)

    Critical temperature (°C):

    358

    Critical pressure (MPa):

    9.3

    Critical density (g/cm3):

    1.14

    References:

    1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-98
    2. Holleman A.F., Wiberg E., Wiberg N. Lehrbuch der Anorganischen Chemie. - Berlin: Walter de Gruyter, 1995. - pp. 422-424
    3. Progress in inorganic chemistry. - Vol. 29. - John Wiley & Sons, 1982. - pp. 192-198
    4. Reedijk J., Poeppelmeier K. Comprehensive Inorganic Chemistry II. - Vol. 1. - Elsevier, 2013. - pp. 814-817
    5. Карапетьянц М.Х., Дракин С.И. Общая и неорганическая химия. - М.: Химия, 1981. - pp. 490
    6. Лидин Р.А., Аликберова Л.Ю., Логинова Г.П. Неорганическая химия в вопросах. - М.: Химия, 1991. - pp. 224-225
    7. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 243-244
    8. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 75
    9. Спицын В.И., Мартыненко Л.И. Неорганическая химия. - Ч.1. - М.: ИМУ, 1991. - pp. 227-228
    10. Успехи химии. - 1965. - Т.34, №6. - pp. 970-974
    11. Успехи химии. - 1974. - Т.43, №12. - pp. 2148-2154, 2167
    12. Успехи химии. - 2001. - Т.70, №3. - pp. 262-298
    13. Химическая энциклопедия. - Т.2. - М.: Советская энциклопедия, 1990. - pp. 549
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru