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Interaction between Xenon Di‐ and Tetrafluoride with Alkali Metal Fluorides
Author(s) -
Spitzin V. I.,
Kiselev Yu. M.,
Fadeeva N. E.,
Popov A. I.,
Tchumaevsky N. A.
Publication year - 1988
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19885590120
Subject(s) - chemistry , alkali metal , tetrafluoride , octahedron , tetragonal crystal system , halide , crystallography , inorganic chemistry , crystal structure , analytical chemistry (journal) , organic chemistry
Interaction of XeF 2 or XeF 4 with MF (M = Na, K, Rb, Cs) has been studied. Hexafluoroxenates(IV) M 2 XeF 6 containing the octahedral XeF 6 2− anion (in accordance with spectroscopy data) were formed in the reaction. Cs 2 XeF 6 and Rb 2 XeF 6 form monoclynic crystals (a 0 = 853.7(5); b 0 = 669.6(2); c 0 = 843.6(5) pm; β = 121.7(1)° and a 0 = 812.6(4); b 0 = 631.9(2); c 0 = 795.6(4) pm; β = 121.5(1)°, respectively). K 2 XeF 6 has a tetragonal lattice (a 0 = 868.8(2); c 0 = 747.8(2) pm), while Na 2 XeF 6 has a hexagonal one (a 0 = 642.1(3); c 0 = 844.8(5) pm). M 2 XeF 6 is shown to dissolve in unhydrous HF incongruently, one of the solvolitic products being XeF 4 . Thermolysis of M 2 Xe IV F 6 and M 2 Xe VI F 8 were shown to proceed under similar temperatures.