摘要 : A new three-dimensional polymeric supramolecular Pb-II complex, {[Pb-3(bpy)(3)(ip)(3)](H2O)}(n), (bpy = 2,2'-bipyridine and ip = isophthalate), has been synthesised and characterised. Single-crystal analysis shows that {[Pb-3(bpy)... 展开 A new three-dimensional polymeric supramolecular Pb-II complex, {[Pb-3(bpy)(3)(ip)(3)](H2O)}(n), (bpy = 2,2'-bipyridine and ip = isophthalate), has been synthesised and characterised. Single-crystal analysis shows that {[Pb-3(bpy)(3)(ip)(3)](H2O)}(n) contains a one-dimensional chain polymeric framework and all the Pb centres with a coordination number of six possess an electron lone pair. The coordination sphere is hemidirected which gives a highly distorted geometry. The arrangement of O- and N- atoms towards Pb atoms suggests a gap or hole in the coordination geometry around these atoms. Moreover, there are three types of pi-pi interactions between aromatic rings and the one-dimensional chains, which are connected by these interactions to form a three dimensional supramolecular network with the channels occupied by water molecules. 收起