Four homo- and hetero-bismetallic 3d/3d-2s complexes constructed from a naphthalenediol-based acyclic bis(salamo)-type tetraoxime ligand
作者:Jing Hao、Li-Long Li、Jin-Tong Zhang、Sunday Folaranmi Akogun、Li Wang、Wen-Kui Dong
DOI:10.1016/j.poly.2017.05.060
日期:2017.9
homo/heterotrinuclear metal(II) complexes [Zn3(L)(OAc)2(CH3OH)2]·3CHCl3 (1), [Zn2(L)Ca(OAc)2]·CHCl3 (2), [Zn2(L)Sr(OAc)2] (3) and [Zn2Ba(L)(OAc)2(CH3OH)]·CH3OH·CHCl3 (4), with a novel acyclic bis(salamo)-type tetraoxime ligand H4L, were synthesized and characterized by elemental analyses, IR, UV–vis and fluorescence spectra. UV–vis titrations clearly show that complexation of H4L with Zn(II) ions affords
摘要同/异三核金属(II)配合物[Zn3(L)(OAc)2(CH3OH)2]·3CHCl3(1),[Zn2(L)Ca(OAc)2]·CHCl3(2),[Zn2( L)Sr(OAc)2](3)和[Zn2Ba(L)(OAc)2(CH3OH)]·CH3OH·CHCl3(4),具有新型无环双(萨拉莫)型四肟配体H4L,通过元素分析,红外,紫外-可见光谱和荧光光谱进行表征。紫外可见滴定清楚地表明,H4L与Zn(II)离子的络合以合作方式提供了3:1(M:L)的化学计量比。配合物2、3和4可以通过配合物1与1当量的M(OAc)2(M2 + = Ca2 +,Sr2 +或Ba2 +)进行取代反应获得。配合物1-4的晶体结构已通过单晶X射线衍射确定。[Zn 3(L)] 2+单元的配位能力可以用作阳离子识别现象。