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[Yb(NH 3 ) 8 ][Yb(Pyr) 6 ] – Elektrid‐induzierte Synthese und Kristallisation aus flüssigem Ammoniak
Author(s) -
MüllerBuschbaum Klaus
Publication year - 2007
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.200700053
Subject(s) - ammonia , ytterbium , homoleptic , liquid ammonia , pyrrole , chemistry , inorganic chemistry , crystallization , ion , metal , nuclear chemistry , materials science , organic chemistry , doping , optoelectronics
[Yb(NH 3 ) 8 ][Yb(Pyr) 6 ]: Electride Induced Synthesis and Crystallization from Liquid Ammonia Single crystalline yellow [Yb(NH 3 ) 8 ][Yb(Pyr) 6 ] (Pyr − = pyrrolate anion, C 4 H 4 N − ) was obtained by the reaction of ytterbium metal with pyrrole (C 4 H 4 NH) in liquid ammonia at −35 °C. Significant excess of ammonia together with avoiding a pyrrole excess prevents formation of the molecular compound [Yb(Pyr) 3 (PyrH) 2 (NH 3 ) 2 ]. [Yb(NH 3 ) 8 ][Yb(Pyr) 6 ] consists of two homoleptic ionic units and rapidly decomposes if removed from the ammonia atmosphere, viz. it shows an ammonia vapour pressure >1 bar.