调控水热合成条件诱导合成以富含共轭环的苯并吡嗪配体修饰的Lindqvist型化合物  

Three Lindqvist-type POM-based compounds constructed by a conjugate ring-riched quinoxaline derivative through controlling the hydrothermal conditions

作　　者：田爱香[1] 田妍[1] 季学彬 倪怀平 刘国成[1] 应俊[1] Aixiang Tian Yan Tian Xuebin Ji Huaiping Ni Guocheng Liu Jun Ying(Department of Chemistry, Bohai University, Jinzhou 121013, China)

机构地区：[1]渤海大学化学系,锦州121013

出　　处：《中国科学：化学》2017年第10期1179-1190,共12页SCIENTIA SINICA Chimica

基　　金：国家自然科学基金(编号:21571023;21101015;21401010;21471021);辽宁省高等学校青年学者成长计划(编号:LJQ2012097)资助项目

摘　　要：在水热条件下,利用富含共轭环的苯并吡嗪配体2,3-二苯基-苯并吡嗪(L),本文合成了3个新的Lindqvist型多酸基化合物:[Cu_2~IL_3(Mo_6O_(19))](1)、[Cu_2~IL_2(C_(16)H_(36)N)2(Mo_6O_(19))2](2)和[Cu_4~IL_4Cl_2(Mo_6O_(19))](3)(C_(16)H_(36)N=四丁基铵).利用红外光谱、元素分析和X射线单晶衍射分析对3个化合物进行了表征.化合物1中,Cu^+离子作为连接体连接两个L分子构成[CuL]_n^(n+)金属-有机链,并通过Mo_6阴离子构成1D链.这些1D链共用Mo_6阴离子构成网格状2D层.化合物2中仍存在[CuL]_n^(n+)链,Mo_6阴离子提供一个端氧原子通过共价键作用,悬挂于金属-有机链的上下两端.化合物3中存在两种功能的L配体(a、b类型):a型配体和Cl桥通过Cu^I离子相连,构筑成金属-有机链;b型配体和Mo_6阴离子悬挂在链的两侧.此外,本文还研究了这3个化合物的电化学和光催化性质.Using a conjugate ring-riched quinoxaline derivative 2,3-diphenyl-quinoxaline（L）, three new Lindqvist polymolybdate based compounds, [Cu2IL3（Mo6O19）]（1）, [Cu2IL2（C16H36N）2（Mo6O19）2]（2） and [Cu4IL4Cl2（Mo6O19）]（3）（C16H36N=tetrabutyl ammonium）, were synthesized under hydrothermal conditions and characterized by single crystal X-ray diffraction. In compound 1, the Cu＋ ions as connecting bodies are linked by L molecules to form a [CuL]nn＋ metal-organic line, and these lines link the Mo_6 anions to construct 1D chains. Then these 1D chains connect each other by sharing the same Mo_6 anions and a 2D grid-like layer is built. In compound 2, there is also a [CuL]nn＋ line.The Mo6 anions offering one terminal O atom covalently hang this metal-organic line to construct a wave-like 1D chain of compound 2. There exist two types of L ligands（type-a and type-b） in compound 3. The type-a L molecules and Cl-bridging are linked by Cu~＋ ions to form a metal-organic line, with the type-b L and Mo_6 anions covalently hanging it up and down. Additionally, the electrochemical and photocatalytic properties of the three compounds were also studied.

关 键 词：多金属氧酸盐 Lindqvist型多酸 2 3-二苯基-苯并吡嗪 电化学和光催化性质 

分 类 号：O641.4[理学—物理化学]