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Rb 2 [U(NH 2 ) 6 ], a Rubidium Hexaamidouranate(IV) obtained from the Reaction of UI 3 with RbNH 2 in Anhydrous Ammonia
Author(s) -
Rudel Stefan S.,
Karttunen Antti J.,
Kraus Florian
Publication year - 2020
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.202000086
Subject(s) - anhydrous , rubidium , liquid ammonia , ammonia , chemistry , ion , crystal structure , inorganic chemistry , crystallography , potassium , organic chemistry
The pyrophoric compound Rb 2 [U(NH 2 ) 6 ] was obtained as a grey to black powder from the reaction of more than three equivalents of RbNH 2 with UI 3 in anhydrous liquid ammonia. During the process, U III is oxidized to U IV and ammonia is reduced under evolution of H 2 . Rb 2 [U(NH 2 ) 6 ] crystallizes in the cubic crystal system, space group Fm 3 m , with the lattice parameter a = 9.7870(12) Å, V = 937.4(2) Å 3 , Z = 4 at T = 293 K. It is isotypic to K 2 PtCl 6 . The compound contains the unprecedented hexaamidouranate(IV) anion [U(NH 2 ) 6 ] 2– .