Unerwartete Bildung von Monomesitylmolybdän(V,VI)-Verbindungen |
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| Authors: | G Kirsten H Grls W Seidel |
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| Abstract: | Mesityl Oxo Molybdenum and Tungsten Compounds. II. Unexpected Formation of Monomesityl Molybdenum(V,VI) Compounds The synthesis of known MoO2Mes2 from MoO2Cl2 and MgMes2 (1 : 1) in THF is accompanied by the formation of monomesityl molybdenum compounds. From ligand exchange and reduction arise MesMoOCl3]– ( 3 a ) and MesMoO3]– ( 3 c ). 3 a and 3 b crystallize in form of (MesMoO3)2{Mg2Cl2(THF)5}2]MesMoOCl3]2(THF)2, which has been characterized by X-ray structural analysis. In 3 two MesMoO3 units are linked in a ring-like manner via magnesium ions. The anion 3 a , which possesses a distorted trigonal-bipyramidal arrangement, was also isolated as Mg(THF)6]MesMoOCl3]2 which was investigated by X-ray analysis. The reaction of MoO2Cl2 with MgMes2 in a 1 : 0,5 ratio generates the compounds Mg(THF)4(MoO3Cl)2] and MoOCl3(THF)2. Reaction pathways which may lead to these compounds are discussed. |
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| Keywords: | Organo molybdenum compounds oxo complexes crystal structure |
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