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Synthesis, Crystal Structures and Properties of Na 2 ReO 3 and of a Second Modification of Na 5 ReO 6
Author(s) -
Sobotka Bettina M.,
Mudring AnjaVerena,
Möller Angela
Publication year - 2004
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.200400314
Subject(s) - rhenium , reactivity (psychology) , crystallography , crystal structure , metal , chemistry , redox , single crystal , x ray crystallography , diffraction , inorganic chemistry , materials science , physics , organic chemistry , medicine , alternative medicine , pathology , optics
Single crystals of Na 5 ReO 6 have been obtained from the reaction of Na 2 O, rhenium metal and CdO in Ag containers at 550 °C. At 700 °C Na 2 ReO 3 is formed possibly via a topotactic redox reaction of Na 5 ReO 6 with rhenium metal. Here we report the crystal structures of Na 2 ReO 3 and a second modification of Na 5 ReO 6 , ex‐situ X‐ray diffraction studies of the reactivity within the system Na / Re / O, selected spectroscopic investigations of the two compounds and Extended‐Hückel calculations of the [Re 2 O 6 ] 4‐ anion, containing a rhenium‐rhenium triple‐bond.