HETEROPOLYMETALLIC COMPLEX SYNTHESES BY REITERATIVE NUCLEOPHILIC ADDITIONS OF LITHIATED (ETA(6)-ARENE)TRICARBONYLCHROMIUM COMPOUNDS TO CATIONIC (ETA(6)-BENZENE)MANGANESE COMPLEXES

Treatment of lithiated (eta(6)-X-n-substituted-arene)Cr(CO)(3) complex es (X = OMe, n = 2, 3) with (eta(6)-benzene)Mn(CO)(x)L3-x PF6 complexe s (L = P(OEt)(3), x = 0, 1) gave rise to the formation of di-, tri-, a nd tetrapolymetallic complexes depending on the experimental condition s. A ''one-pot'' procedure was developed to obtain tetranuclear comple xes directly from (eta(6)-arene)Cr and -Mn mononuclear complexes. The molecular structures of the trinuclear complex 5b -C6H2:(eta(5)-C6H6)( 2)]Mn-2[(CO)(4)(P(OEt)(3))(2)] and of tetranuclear complex 9 )-C-6:(et a(5)-C6H6)(3)]Mn-3[(CO)(6)(P(OEt)(3))(3)] have been determined by X-ra y crystallography.