Abstract
Bridge-splitting reaction of the dimer [Rh(CO)2Cl]2 with two molar equivalents of amino acid ester ligands yield the rhodium(I) dicarbonyl complex [Rh(CO)2ClL] (1a-g) {L = glycine methylester (a), alanine methylester (b), alanine ethylester (c), alanine t-butylester (d), phenylalanine methylester (e), phenylalanine ethylester (f), valine methylester (g)}. Complexes 1 undergo oxidative addition (OA) with CH3I to give the five-coordinate Rh(III) complexes of the type [Rh(CO)(COCH3)IClL] (2a–g). The complexes have been characterized by elemental analysis, IR and 1H NMR spectroscopy. Theoretical calculations reveal that the synthesized complexes 1 are very prone to undergo oxidative addition with CH3I with a low activation barrier.
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