ORGANOMETALLIC LEWIS-ACIDS .43. REACTION OF THE HIGHLY REDUCED METALCARBONYL [IR(CO)3]3- WITH THE ETHYLENEPENTACARBONYLRHENIUM CATION, FORMATION OF THE TRINUCLEAR HYDRIDE (OC)5RE-IR(CO)3(H)-RE(CO)5 AND THE TRISMETALATED CARBONATE (MU-3-CO3-[RE(CO)5]3)+

The cationic complex [(eta-2-C2H4)Re(CO)5]+PF6- reacts with the highly reduced Ellis compound Na3Ir(CO)3 to give the linear, trinuclear hydride (OC)5Re-Ir(CO)3H-Re(CO)5 (1), the structure of which has been determined by X-ray diffraction. Unexpectedly, from a solution of [(eta-2-C2H4)Re(CO)5]+ and [Ir(CO)3]3- exposed to air, crystals have been obtained which contain the carbonate bridged complex {(mu-3-CO3)[Re(CO)5]3}+ReO4- (3) of wind wheel structure and the known cubane [Re(CO)3OH]4 (2) in the unit cell. Reaction of [Re(CO)4]3- and [(eta-7-C7H7)Mo(CO)3]+ affords the redox product (OC)3Mo(eta-6-C7H7-C7H7-eta-6)Mo(CO)3 (4).