Coordination Chemistry and Structural Dynamics of a Long and Flexible Piperazine-Derived Ligand
作者:Chris S. Hawes、Sophie E. Hamilton、Jamie Hicks、Gregory P. Knowles、Alan L. Chaffee、David R. Turner、Stuart R. Batten
DOI:10.1021/acs.inorgchem.6b00933
日期:2016.7.5
highly flexible internally functionalized dipyridyl ligand α,α′-p-xylylenebis(1-(4-pyridylmethylene)-piper-4-azine), L, has been employed in the synthesis of a series of coordination polymer materials with CoII, CdII, and AgI ions. In poly-[Cd(L)(TPA)] 1 and poly-[Co(L)(IPA)], 2, (TPA = terephthalate, IPA = isophthalate) the ligand adopts a similar linear conformation to that seen in the structure of the
长且高度柔性的内部官能化二吡啶基配体α,α'-对苯二甲撑双(1-(4-吡啶基亚甲基)-哌-4-嗪)L已用于与Co的一系列配位聚合物材料的合成II,Cd II和Ag I离子。在聚[[Cd(L)(TPA)] 1和聚-[Co(L(IPA)]]中,2(TPA =对苯二甲酸酯,IPA =间苯二甲酸酯),该配体与未结合分子的结构具有相似的线性构象,并提供了较长的(2.6 nm)金属-金属桥联距离。由于边缘长度与羧酸盐大分子配体的不匹配,分别观察到来自规则直径1和2的规则直径和(4,4)网络几何形状的几何变形。在聚-[Ag 2(CF 3 SO 3)2(L)]中,3,配体通过两个吡啶基团和四个哌嗪氮供体中的两个配位基进行配位,形成一个高连接性的二维网络。化合物3-多孔cds网络聚[Ag 2(L)](BF 4)2 ·2MeCN,4在乙腈客人交换时经历了引人入胜的快速单晶至单晶重排用于环境空气中的水,形成无孔水合网络聚-[Ag