Reactions of bis(trifluoromethyl)diazomethane with transition-metal complexes
Abstract
At room temperature hydridopentacarbonylmanganese reacts with (CF3)2CN2 to form (CF3)2C(H)Mn(CO)5. In contrast, the platinum hydride trans-(Et3P)2Pt(H)Cl only reacts at elevated temperatures, when trans- and cis-(Et3P)2Pt[CH(CF3)2]Cl are formed, the latter predominating. Treatment of the iron complex [(π-C5H5)Fe(CO)2]2 with (CF3)2CN2 in tetrahydrofuran yields (π-C5H5)Fe(CO)2CH(CF3)2. Octacarbonyldicobalt reacts at room temperature with the diazo-compound giving the air- and light-sensitive red crystalline complex [(CF3)2C]Co2(CO)7. Chlorocarbonylbis(diphenylmethylphosphine)iridium with (CF3)2CN2 affords the stable complex (Ph2PMe)2Ir-[C(CF3)2](Cl)CO, the possible structure of which is discussed.