Solid–Gas Phase Synthesis of Coordination Networks by Using Redox‐Active Ligands and Elucidation of Their Oxidation Reaction
作者:Taizen Den、Pavel M. Usov、Jaejun Kim、Daisuke Hashizume、Hiroyoshi Ohtsu、Masaki Kawano
DOI:10.1002/chem.201902105
日期:2019.9.2
coordination networks are obtained from the solid-gas phase reaction between ZnX2 (X=I, Br) and the redox-active 2,5,8-tri(4-pyridyl)1,3-diazaphenalene (HTPDAP) ligand. Their structures were solved by ab initio powder X-ray diffraction analysis and feature a novel Zn halide trimeric cluster. This strategy is contrasted with a conventional solvothermal synthesis, which led to a one-dimensional coordination
协调网络的形成是一个受多种因素影响的复杂过程。已经开发出许多合成策略,试图控制这些因素并指导最终产品的结构。然而,配位键的形成和结构组装过程通常以溶液或固态进行。相比之下,气相网络合成在很大程度上仍未探索。在此,从ZnX2(X = I,Br)与氧化还原活性2,5,8-三(4-吡啶基)1,3-二氮杂苯丙烯( HTPDAP)配体。它们的结构通过从头开始的粉末X射线衍射分析解决,并具有新颖的卤化锌三聚体簇。将该策略与常规溶剂热合成法进行对比,导致产生一维配位聚合物。这些材料的固有电活性特性通过固态循环伏安法测量进行探测,结果表明存在HTPDAP和基于卤化物的过程。使用NOPF6试剂对二维网络进行化学氧化,出乎意料地导致了HTPDAP的硝化类似物的形成,即PF6-双质子化的4,6,7,9-tetranitro-2,5,8-tris(分离并鉴定了4-吡啶基)二氮杂萘阳离子(表示为N-TPDAP)。这