A series of ditopic ligands bearing terpyridyl and polyamine coordination sites have been prepared. Complexes with RuII bound to the terpyridyl sites of many of these ligands have been prepared. RuII complexes of these ligands appear vulnerable to nucleophilic displacement of the polyamine portion of the ligand by BH4 –. A limited study of the coordination chemistry of the polyamine portion of the RuII complexes has been conducted, including the synthesis and characterization of RuII–CoIII heterodinuclear complexes in which the CoIII centre is coordinated by a cyclam macrocycle. The CoIII centre in these systems is unexpectedly labile – it can be removed from the polyamine upon treatment with ethane-1,2-diamine.
我们制备了一系列具有萜
吡啶基和
多胺配位位点的二价
配体。我们还制备了与其中许多
配体的terpyridyl配位结合的 RuII 配合物。这些
配体的 RuII 复合物似乎很容易被
BH4 - 亲核置换
配体的
多胺部分。我们对 RuII 配合物中
多胺部分的配位
化学进行了有限的研究,包括 RuII-CoIII 异核配合物的合成和表征,其中 CoIII 中心由环胺大环配位。这些体系中的 CoIII 中心具有出乎意料的易变性--用
乙烷-1,2-二胺处理后,它可以从
多胺中移除。