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Control of Oxidation States of Transition Elements (Cr, Mn) in Nitridometalates and the Solid Solution Series Li 6 (Ca 1‐ x Sr x ) 2 [Mn 2 N 6 ]
Author(s) -
Hochrein Oliver,
Höhn Peter,
Kniep Rüdiger
Publication year - 2003
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.200390153
Subject(s) - strontium , transition metal , manganese , oxidation state , chemistry , ternary operation , solid solution , solid state , crystallography , inorganic chemistry , metal , catalysis , biochemistry , organic chemistry , computer science , programming language
The formation of ternary nitridometalates from the elements in the case of the systems Li—Cr, V, Mn—N leads to compounds which contain the transition metals in the highest (V V , Cr VI ) or a comparably high (Mn V ) oxidation state. In the corresponding calcium and strontium systems, the transition metals show a lower oxidation state (V III , Cr III , Mn III ). Transition metals with intermediate oxidation states (Cr V , Mn IV ) are present in the quaternary (mixed cation) compounds Li 4 Sr 2 [Cr 2 V N 6 ], Li 6 Ca 2 [Mn 2 IV N 6 ], and Li 6 Sr 2 [Mn 2 IV N 6 ] ( R 3¯(#148), a = 585.9(3) pm, c = 1908.6(4) pm, Z = 3), as well as in the solid solution series Li 6 (Ca 1—x Sr x ) 2 [Mn 2 IV N 6 ].