Abstract
The preparation of cationic indazole (HIdz) rhodium(I) complexes of the types [(diolefin)Rh(HIdz)2]ClO4 and [(CO)2Rh(HIdz)2]ClO4 is described. Neutral binuclear rhodium(I) complexes of the type [Y2Rh(μ-Idz)]2 (Y2 COD, TFB, NBD, (CO)2 or (CO)(PPh3)) are obtained by treating the corresponding complexes [Y2RhCl]2 with indazole and organic or inorganic bases. The cationic mononuclear derivatives react with the solvated species [Y2Rh(acetone)x]ClO4 in the presence of triethylamine to give neutral binuclear complexes of the types [(CO)2Rh(μ-Idz)2Rh(diolefin)], [(Ph3P)(CO)Rh(μ-Idz)2Rh(diolefin)] and [(diolefin)Rh(μ-Idz)Rh(diolefin′)] (diolefin COD, TFB or NBD; diolefin′ COD or TFB). Alternative methods for the synthesis of the binuclear complexes are also described.
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