Synthesis, Characterization, and Electrochemical Relationships of Dinuclear Complexes of Platinum(II) and Platinum(III) Containing Ortho-Metalated Tertiary Arsine Ligands
作者:Martin A. Bennett、Suresh K. Bhargava、Alan M. Bond、Alison J. Edwards、Si-Xuan Guo、Steven H. Privér、A. David Rae、Anthony C. Willis
DOI:10.1021/ic0498790
日期:2004.11.1
gives two isomeric dinuclear platinum(II) complexes, one containing a half-lantern structure with two chelating and two bridging C6H3-5-Me-2-AsPh2 ligands, [Pt2(kappa2As,C-C6H3-5-Me-2-AsPh2)2(mu-kappaAs,kappaC-C6H3-5-Me-2-AsPh2)2], and the other, a full-lantern with four bridging C6H3-5-Me-2-AsPh2 ligands, [Pt2(mu-kappaAs,kappaC-C6H3-5-Me-2-AsPh2)4]. The lantern structure of the latter is retained in
2-Li-4-MeC6H3AsPh2与[PtCl2(SEt2)2]的反应产生了两种同分异构的双核铂(II)配合物,其中一种包含一个半灯笼结构,具有两个螯合和两个桥接的C6H3-5-Me-2-AsPh2配体。 ,[Pt2(kappa2As,C-C6H3-5-Me-2-AsPh2)2(mu-kappaAs,kappaC-C6H3-5-Me-2-AsPh2)2]和另一个是具有四个桥接的全灯笼C6H3-5-Me-2-AsPh2配体,[Pt2(mu-kappaAs,kappaC-C6H3-5-Me-2-AsPh2)4]。后者的灯笼结构保留在二卤代二铂(III)络合物中,该络合物是通过将氯,溴或碘氧化加成至异构体混合物中而形成的。二氯衍生物与银盐或钠盐进行复分解反应,生成相应的氰基,硫氰酸根,氰基和氟原子。所有配合物的结构已通过单晶X射线分析确定。氧化加成产物的Pt-Pt距离在2.65-2.79 A范围内(参比双铂(II)结构中为2