Synthesis, reactions, spectral (IR and visible) and magnetic studies of bimetallic alkoxides containing Co(.MU.-OR)3M (M=Nb or Ta) bridging units.
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概要
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Interactions of CoCl<SUB>2</SUB> with K{M(OPr<I><SUP>i</SUP></I>)<SUB>6</SUB>} in 1:2 molar ratio in Pr<I><SUP>i</SUP></I>OH and C<SUB>6</SUB>H<SUB>6</SUB> result in products with the composition [Co{M(OPr<I><SUP>i</SUP></I>)<SUB>6</SUB>}<SUP>b<SUB>42</SUB></SUP>] (M=Nb or Ta) in quantitative yields. Interchange reactions of these isopropoxide derivatives with alcohols of varying steric bulk (e.g., MeOH, EtOH, Pr<I><SUP>n</SUP></I>OH, Bu<I><SUP>n</SUP></I>OH, and Bu<I><SUP>t</SUP></I>OH, or Am<I><SUP>t</SUP></I>OH) yield derivatives of composition, [Co{M(OR)<SUB>6</SUB>}<SUB>2</SUB>] (R=Me, Et, Pr<I><SUP>n</SUP></I>, and Bu<I><SUP>s</SUP></I>); [Co{M(OPr<I><SUP>i</SUP></I>)<SUB>3</SUB>(OBu<I><SUP>s</SUP></I>)<SUB>3</SUB>}<SUB>2</SUB>]; [Co{M(OPr<I><SUP>i</SUP></I>)<SUB>5</SUB>(OBu<I><SUP>t</SUP></I>)}<SUB>2</SUB>] and [Co{M(OPr<I><SUP>i</SUP></I>)<SUB>2</SUB>(OR)<SUB>4</SUB>}<SUB>2</SUB>] (R=Bu<I><SUP>t</SUP></I> or Am<I><SUP>t</SUP></I>). All these novel compounds have been characterized by elemental analyses and molecular weight determinations as well as by infrared, visible spectral and magnetic studies.
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著者
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Dubey Raj
Department of Chemistry, University of Rajasthan
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Singh Anirudh
Department of Chemistry, University of Rajasthan
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Mehrotra Ram
Department of Chemistry, University of Rajasthan