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采用两个易扭转异构的双三齿有机配体,双吡啶二甲基-6,6′-二酰肼-2,2′-连吡啶(H2L1)和双吡啶二乙基-6,6′-二酰肼-2,2′-连吡啶(H2L2),和金属镍离子组装得到2个金属螺旋体(helicate),Ni2(HL1)2(PF6)(BF4)(CH3OH)(H2O)2(1)和Ni2(HL2)(H2L2)(ClO4)3(C2H5OH)(CH3OH)H2O)3(2),并测定了它们的晶体结构。同时由配体H2L3出发,通过逐级组装的方法,得到一个镍-银杂金属的配位聚合物Ni2Ag2(HL3)2(ClO4)2(CH3CN)3(3)。单晶结构表明,配位聚合物3中配体H2L3首先与镍离子组装成分子盒化合物(molecularbox),该结构单元进一步通过Ag离子与分子盒外围N原子配位,使分子盒互相串连成一维配位聚合物3,分子盒聚集体沿c方向伸展成一维链结构,链与链之间相互平行,进一步堆积成二维孔道结构。
Two easily biodegradable bi-tridentate organic ligands, dipyridyl dimethyl-6,6’-dihydrazide-2,2’-bipyridine (H2L1) and bipyridine diethyl-6,6 ’- dihydrazide-2,2’-bipyridine (H2L2) was synthesized and two metal helices were assembled with Ni2 (HL1) 2 (PF6) (BF4) (CH3OH) 1) and Ni2 (HL2) (H2L2) (ClO4) 3 (C2H5OH) (CH3OH) H2O) 3 (2) were synthesized and their crystal structures were determined. At the same time, starting from the ligand H2L3, Ni2Ag2 (HL3) 2 (ClO4) 2 (CH3CN) 3 (3) was obtained by stepwise assembly. The single crystal structure shows that the ligand H2L3 of the coordination polymer 3 is firstly assembled with the nickel ions into a molecular box which is further coordinated with the N atoms at the periphery of the molecular box by the Ag ions so that the molecular boxes are connected in series to each other Dimensional coordination polymer 3, molecular box aggregates along the c direction into a one-dimensional chain structure, the chain and the chain parallel to each other, and further stacked into two-dimensional pore structure.