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Novel Strategies for the Synthesis and Crystallization of Electrophilic Dinuclear Cations: Solution and Solid‐State Properties of [Re 2 (NCCH 3 ) 10 ][Mo 6 O 19 ] 2
Author(s) -
Bernstein Stacey N.,
Dunbar Kim R.
Publication year - 1992
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199213601
Subject(s) - acetonitrile , electrophile , oxide , crystallization , acceptor , chemistry , salt (chemistry) , metal , ion , inorganic chemistry , crystallography , physics , organic chemistry , catalysis , quantum mechanics
An attractive route to mixed‐valent metal oxides has been developed from the observation that on slow heating 1 completely loses its acetonitrile ligands at temperatures below 350 °C and is transformed into an oxide containing Mo VI and Re in two oxidation states. Salt 1 is prepared surprisingly simply according to Equation (a) and shows unexpected electron‐acceptor properties, which makes it a potential source of a naked Re 2 4+ion. The structural parameters of the cation of 1 point to a ReRe triple bond, although no strong α or π donors stabilize the system.