Triple-Decker Complexes. 12.1 Triple-Decker Complexes with Bridging Boratabenzene Ligands. Syntheses, Structures of [(μ-C5H5BMe)(FeCp*)2]PF6 and of [(μ-C5H5BMe){Rh(COD)}2]CF3SO3, and Boratabenzene Transfer Reactions

The orange complex Cp*Fe(C 5 H 5 BMe) ( 1a ) was synthesized from [Cp*Fe(NCMe) 3 ]PF 6 and Li(C 5 H 5 BMe) in 91% yield. Electrophilic stacking reactions with metalloelectrophiles gave the triple-decker salts [(μ-C 5 H 5 BMe)(FeCp*) 2 ]PF 6 ( 4 ), [(μ-C 5 H 5 BMe)(FeCp*)(RuCp*)]CF 3 SO 3 ( 5 ), and [(μ-C 5 H 5 BMe)(FeCp*)(MCp*)](CF 3 SO 3 ) 2 with M = Rh (for 6 ) and M = Ir (for 7 ). Electrophilic stacking of Rh(C 5 H 5 BMe)(COD) ( 8 ) with [(COD)Rh(MeNO 2 ) x ]CF 3 SO 3 gave [(μ-C 5 H 5 BMe){Rh(COD)} 2 CF 3 SO 3 ( 10 ). The structures of the two triple-decker complexes 4 and 10 were determined by X-ray diffraction. Boratabenzene transfer reactions were found for the heterobimetallic salts 5 − 7 .