两种冠醚环化二硫纶配体的Ni配合物的合成、结构及光电性质研究

Synthesis,Structure and Photoelectric Properties of Two Novel Nickel(Ⅱ) Complexes Containing Crown Ether Annelated Dithiolate Ligand

以配体Ia、Ib和Ni(dbbpy)Cl_2(dbbpy=4,4′-二-叔丁基-2,2′-联吡啶)反应,合成了两种新型冠醚环化二硫纶配体的Ni(Ⅱ)配合物1和2。经~1 H NMR、IR、MS和元素分析表征了二者的结构,并解析了其晶体结构,初步测定了其光电响应性质。结果表明,配合物2对Li^+有较明显的响应,ΔE_1^(1/2)=35mV(30倍Li^+),对碱金属离子Na^+和K^+均无明显响应。同时配合物1和2在室温下均有明显的溶剂变色现象。

Two novel nickel（Ⅱ）complexes（1 and 2）containing crown ether annelated dithiolate ligand were synthesized by reactions of Ia,Ib with Ni（dbbpy）Cl_2（dbbpy=4,4′-di-tert-butyl-2,2′-bipyridine）.The complexes′structure were characterized by ~1H NMR,IR,MS and elemental analysis.X-ray crystallography and photoelectric properties of these two compounds were also investigated.Complex2 exhibited a significant response for Li~＋ions with a large positive shift of ca.35 mV.Moreover,both complexes（1 and 2）displayed solvatochromic behaviors.