Complexes of iron(III) and chromium(III) salen and salophen Schiff bases with bridging 1,3,5-triazine derived multidirectional ligands
作者:Ziya Erdem Koç
DOI:10.1002/jhet.577
日期:2011.7
A new synthetic route for preparing multidirectional ligands was developed by using 2,4,6‐trichloro‐1,3,5‐triazine (cyanuric chloride) as core. The reaction included the selective substitutions of 4‐aminobenzoic acid onto three chlorides of the triazine ring via a stepwise manner at 1:1, 1:2, or 1:3 equiv. and 0, 25, 130°C, respectively. An efficient synthesis of a novel class of “multidirectional
以2,4,6-三氯-1,3,5-三嗪(氰尿酰氯)为核心,开发了一种制备多向配体的新合成途径。反应包括以1:1、1:2或1:3当量的逐步方式将4-氨基苯甲酸选择性取代到三嗪环的三个氯化物上。分别为0、25、130°C。基于胺对2,4,6-三氯-1,3,5-三嗪的高产氯化物取代,已经开发了新型“多向配体”的有效合成方法。16种新的单核,二核,三核和四核Fe(III)和Cr(III)配合物,涉及四齿Schiff碱N,N'-双(水杨基)亚乙基二胺-(salenH 2)或双(水杨基)-邻苯二胺(salophenH 2)合成了两个新的1,3,5-三嗪衍生的多向配体,并通过元素分析,1 H NMR,FT-IR光谱,LC-MS分析,AAS,热分析和磁化率测量进行了表征。该配合物的特征还在于低旋转畸变的八面体Fe(III)和Cr(III),由羧酸桥接。据了解,[的Fe(沙仑)/(salophen)} 2