Synthesis and characterization of Cp∗Rh (III) and Ir (III) polypyridyl complexes:
作者:H Aneetha、P.S Zacharias、B Srinivas、G.H Lee、Y Wang
DOI:10.1016/s0277-5387(98)00299-x
日期:1998.12
Reaction of [Cp*M(mu-Cl)Cl](2) (Cp* = eta(5)-(C5Me5), M=Rh, Ir) with 4'-phenyl-2,2': 6', 2 " terpyridine (Ph-terpy), L-1 and 1,4-bis(2,2': 6', 2 "-terpyridin-4'-yl)benzene (diterpy), L-2 results in the formation of cationic complexes by the cleavage of halide bridge. These complexes, [Cp*(RhLCl)-Cl-1]BF4, (1), [(Cp*RhCl)(2)L-2] (BF4)(2), (2), [Cp*(IrLCl)-Cl-1]BF4, (3) and [(Cp*IrCl)(2)L-2](BF4)(2), (4) are characterised by various spectral methods. Ph-terpy coordinates the metal ion in a bidentate fashion to form mononuclear complexes while diterpy bridges two metal ions to form dinuclear complexes. Complex (1) is crystallographically characterised. In solution Rh(III) complexes show fluxional behavior. (C) 1998 Elsevier Science Ltd. All rights reserved.