A new series of photo-luminescent Zn(II) and Mg(II) Schiff base complexes were prepared by treatment of the arylethynyl-substituted salicylaldehydes obtained from the Sonogashira reaction with the metal salt followed by addition of the different diamines. Most square-planar Zn(II) complexes exhibited good quantum efficiencies. The Mg(II) complexes displayed even higher quantum yields than the corresponding Zn-complexes. Unsymmetrical Zn(II) Schiff base complexes were also successfully prepared from organic monoimines obtained as intermediates in the formation of the Mg metal Schiff base complex. The monoimine can also be prepared from the reaction of salicylaldehydes with excess diaminoarene. Two crystal structures featuring the zinc atom are reported, one with a rare four-coordinate square planar geometry and the other with a five-coordinate square pyramidal geometry.
一系列新的光致发光Zn(II)和Mg(II) Schiff碱配合物通过将从Sonogashira反应获得的芳基
乙炔取代的
水杨 aldehyde与
金属盐处理后,再加入不同的二胺制备而成。大多数方形平面Zn(II)配合物表现出良好的量子效率。Mg(II)配合物的量子产率甚至高于相应的Zn配合物。还成功制备了不对称Zn(II) Schiff碱配合物,这些配合物是通过有机单胺在形成Mg
金属Schiff碱配合物的中间体中获得的。单胺也可以通过
水杨 aldehyde与过量二胺
芳烃反应制备。报告了两种包含
锌原子的晶体结构,一种具有稀有的四配位方形平面几何结构,另一种具有五配位方锥几何结构。