STEREOSPECIFIC INTRODUCTION OF CARBON-MONOXIDE INTO METAL-CARBONYL CHELATE COMPLEXES
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The chelate complex, Mo(CO)4[(C6H5)2PCH2CH2CH2N(CH3)2], reacts with 13CO in solution with replacement of the N-donor end of the ligand giving cis- Mo(CO)4(13CO)[(C6H5)2PCH2CH2CH2N(CH3)2] in which the 13CO coordinates stereospecifically cis to the P atom; similarly the tridentate chelate complex, cis-Mo(CO)3[(C6H5)2PCH2CH2N(C2H5)CH2CH2P(C6H5)2], reacts with 13CO to yield the N-displaced product in which the two P atoms remain coordinated cis to each other and the 13CO coordinates cis to both P atoms. These remarkable stereospecific reactions with CO are discussed in terms of structures of possible reactive intermediates. 1974.