从含4,4′-二吡啶胺结构单元的双(二吡啶胺)桥联配体出发,采用溶剂热法合成了2个结构新颖的配位聚合物:[CdL1 Br2]n·7.5nH2O[L1=N,N,N′,N′-四(4-吡啶)-1,4-苯二胺](1)和[Cu2L2(μ1.1,3-SCN)2]n·nMeOH[L2=N,N-二 (2-吡啶)-N′,N′-二(4-吡啶)-1,4-苯二胺](2),对它们进行了元素分析、红外光谱、1H NMR和紫外-可见光谱等表征,并用X射线单晶衍射测定了其晶体结构.单晶测试结果表明,配合物1中配体L1的4个吡啶N原子均参与配位,桥联了4个Cd原子,每个Cd原子与4个吡啶N原子和2个溴配位,形成六配位的八面体构型.通过这些配位作用,最终形成包含Kagome结构的三维超分子网络.配合物2是由一维柱状[Cu(SCN)]n链通过L2桥联生成的二维结构.有趣的是,L2中具有螯合能力的2,2′-二吡啶胺单元并未参与配位,只有4,4′-二吡啶胺单元中的2个吡啶N原子分别与1个Cu(Ⅰ)配位,连接了相邻2条平行的{Cu(SCN)}n链,形成二维结构.%Starting from two bis(dipyridylamine) ligands containing 4,4'-dipyridylamine moieties, two novel coordination polymers, [ CdL1 Br2 ]n ? 7. 5nH2O [ L1 = N, N, N', W-tetrakis (4-pyridyl) -1,4-phenylenedia-mine](l) and [Cu2L2(μ1,13-SCN)2]n ? rcMeOH[L2 = N,N-di(2-pyridyl)-N',N'-di(4-pyridyl-l ,4-pheny-lenediamine ] (2) , were prepared under solvothermal conditions. Their structures were characterized by elemental analyses, IR spectrum and X-ray single-crystal diffraction measurements. In complex 1, L1 utilizes all its pyridyl nitrogens to coordinate with four Cd( II ) centers to afford a three-dimensional(3D) supramolecular assembly containing Kagome structures. Complex 2 has a 2D sheet structure composed of [ CuSCN]∞ columns and bridging L2 ligands with SCN- coordinated in a rare μ1,1,3-bridging mode. It is noteworthy that the 2,2'-dipyridylamine unit of L2 is unexpectedly left noncoordinated.
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