配合物[Pd(EDTB)Cl_(2)]·2HCl·3H_(2)O的合成、晶体结构及其荧光性质  

Synthesis and crystal structure of the complex[Pd(EDTB)Cl_(2)]·2HCl·3H_(2)O and its fluorescence properties

作　　者：金光 陈彦国 JIN Guang;CHEN Yanguo(College of Material and Chemical Engineering,Hubei University of Technology,Wuhan 430068,China)

机构地区：[1]湖北工业大学材料与化学工程学院,湖北武汉430068

出　　处：《湖北大学学报（自然科学版）》2023年第4期567-573,共7页Journal of Hubei University：Natural Science

基　　金：科技部中小企业创业基金(12C26214204453);湖北工业大学博士启动基金(BSQD12139)资助。

摘　　要：报道了含六齿配体N,N,N′,N′-四(2′-苯并咪唑甲基)乙二胺(EDTB)单核Pd(Ⅱ)配合物[Pd(EDTB)Cl_(2)]·2HCl·3H_(2)O的合成、晶体结构及其荧光性质.该配合物属正交晶系,Pccn空间群,晶胞参数为:a=2.9015(5)nm,b=1.4478(2)nm,c=1.7411(3)nm,α=β=γ=90°,V=7.314(2)nm^(3),Z=8,F(000)=3616,D_(c)=1.607 g/cm^(3),M_(r)=884.96,μ=4.841 mm^(-1);最终因子(I>2σ(I))R_(1)=0.063,wR_(2)=0.1516;R(全部数据):R_(1)=0.0674,wR_(2)=0.1539.结构分析表明,Pd(Ⅱ)分别与配体EDTB中的2个苯并咪唑N原子及2个Cl离子配位,形成一个四配位的扭曲平面结构.不同金属离子对标题配合物荧光性能的影响不同:过渡金属离子、碱金属离子、碱土金属离子对标题配合物的荧光都有猝灭作用,过渡金属离子的猝灭作用最为明显;Fe^(3+)对标题配合物的荧光猝灭效率最高.The synthesis,crystal structure and fluorescence properties of a mononuclear palladium(Ⅱ)complex[Pd(EDTB)Cl_(2)]·2HCl·3H_(2)O(EDTB=N,N,N′,N′-tetrakis-[(2′-benzimidazolyl)methyl]-1,2-ethanediamine)have been reported.The crystal structure has been determined by single crystal X-ray diffraction.The crystal belongs to orthorhombic system,space group Pccn with a=2.9015(5)nm,b=1.4478(2)nm,c=1.7411(3)nm,α=β=γ=90°,V=7.314(2)nm^(3),Z=8,F(000)=3616,D_(c)=1.607 g/cm 3,M_(r)=884.96,μ=4.841 mm^(-1).The final R indices(I>2σ(I))R_(1)=0.063,wR_(2)=0.1516;R indices(all data):R_(1)=0.0674,wR_(2)=0.1539.The palladium(Ⅱ)atom,is four-coordinated by two nitrogen atoms of the ligand EDTB benzimidazole groups and two chloride ions,forming a tetra-coordination distorted plane structure.The results of fluorescence spectrometry indicate the fluorescence intensity of the title complex was quenched by transition mental ion,alkali mental ion and alkaline earth mental ion.The transition metal ions make the most obvious quenching influence,and Fe^(3+)had the highest fluorescence quenching efficiency for the title complex.

关 键 词：单核Pd(Ⅱ)配合物 EDTB 合成 晶体结构 荧光 

分 类 号：O612.8[理学—无机化学]