Bridged Dihydroxypyridine Ligands for the Synthesis of Expanded Helicates

The assembly of organometallic half-sandwich complexes with bis(dihydroxypyridine) ligands gives hexanuclear structures, which can be regarded as expanded triple-stranded helicates.以双(二羟基吡啶)配体（bis(dihydroxypyridine) ligands）组装有机金属半夹心配合物（organometallic half-sandwich complexes），所得产物为六核结构（hexanuclear structures），此类结构可被视为扩展型三链螺旋配合物（expanded triple-stranded helicates）。