Abstract
Monoselenocarboxylate-bridged binuclear complexes of RhIII and IrIII, (Cp*MCl)2(m-SeCOAr)2 (M = Rh or Ir; Cp* = pentamethylcyclopentadienyl; Ar = Ph, C6H4Me-4), have been isolated either by the reaction between Cp*2M2(m-Cl)2Cl2 with KSeCOAr in acetonitrile or by treatment of Cp*MCl(solvent)2PF6 with KSeCOAr in acetone. The novel binuclear complexes, Cp*IrCl(m-SeCOAr)(k2-SeCOC6H3R-)IrCp* (R = H or Me-4) with ortho-metalation at one of the iridium centers have been isolated following the use of excess AgPF6. The single crystal structure of Cp*IrCl(m-SeCOC6H5)(k2-SeCOC6H4-)IrCp* exhibits two phenylcarboselenolate moieties situated in syn fashion with respect to the \dqIr2Se2\dq plane, one of which leans towards the metal center in order to undergo ortho-metalation after iridium-chlorine bond dissocn. on SciFinder(R)
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