A multidentate ligand based on two triazole groups from “click chemistry” and its copper(II) and iron(II) complexes: synthesis, structure, and electrochemistry
作者:XiuLi You、ZhenHong Wei
DOI:10.1007/s11243-014-9849-2
日期:2014.9
A multidentate ligand, namely N,N-bis[[1-(phenylmethyl)-1H-1,2,3-triazol-4-yl]methyl]-2-pyridinemethaneamine (L), was synthesized through a click reaction of N,N-di-2-propyn-1-yl-2-pyridinemethanamine with benzyl azide in the presence of CuI catalyst. Treatment of L with CuCl2 or Fe(NCS)2 gave the complexes [CuLCl2]·EtOH (1) and [FeL(NCS)2]·MeCN (2). Single-crystal X-ray studies show that in 1, the Cu(II) center has slightly distorted square pyramidal geometry resulting from the coordination of one pyridinyl nitrogen atom, one tertiary amine nitrogen atom, one triazole nitrogen atom, and two chloride atoms; in 2, the Fe(II) center has distorted octahedral geometry, coordinated by six nitrogen atoms; two each from NCS− groups and triazole rings, one from a pyridinyl ring, and one from tertiary amine nitrogen. In addition, complexes 1 and 2 were characterized by spectroscopic and electrochemical methods.
在 CuI 催化剂存在下,通过 N,N-二-2-丙炔-1-基-2-吡啶甲胺与叠氮化苄的点击反应,合成了一种多齿配体,即 N,N-双[[1-(苯基甲基)-1H-1,2,3-三唑-4-基]甲基]-2-吡啶甲胺(L)。用 CuCl2 或 Fe(NCS)2 处理 L,可得到 [CuLCl2]-EtOH 复合物(1)和 [FeL(NCS)2]-MeCN 复合物(2)。单晶 X 射线研究表明,在 1 中,由于一个吡啶基氮原子、一个叔胺氮原子、一个三唑氮原子和两个氯原子的配位,Cu(II) 中心具有轻微扭曲的正方金字塔几何形状;在 2 中,Fe(II) 中心具有扭曲的八面体几何形状,由六个氮原子配位;其中两个分别来自 NCS- 基团和三唑环,一个来自吡啶基环,一个来自叔胺氮。此外,络合物 1 和 2 还通过光谱和电化学方法进行了表征。