2-巯基吡啶桥连双核钯配合物的合成与催化活性  

Synthesis and Catalytic Activity of 2-MercaptopyridineBridged Dinuclear Palladium Complex

作　　者：吕鹤 李泽宁 郑青[1] LYU He;LI Zening;ZHENG Qing(School of Life Sciences,Huzhou University,Huzhou 313000,China)

机构地区：[1]湖州师范学院生命科学学院,浙江湖州313000

出　　处：《湖州师范学院学报》2021年第4期31-35,共5页Journal of Huzhou University

基　　金：湖州师范学院校级科研项目(2019XJKYJ38);国家级大学生创业创新训练计划项目(202010347045)。

摘　　要：将2-巯基吡啶(2-HSPy)与N,N-二甲基苄胺(dmba)配位进行钯化合物反应,合成2-巯基吡啶桥连的双核钯化合物[Pd(dmba)(2-SPy)]_2,并通过元素分析和X-射线单晶衍射确认该核钯化合物结构.在[Pd(dmba)(2-SPy)]_2分子中,每个中心Pd原子分别与N,N-二甲基苄胺配体的C原子和N原子,以及2-巯基吡啶的S原子和N原子配位,呈现出典型的平面四边形结构.两个中心Pd原子的距离为2.973?,显示出较弱的金属-金属相互作用.在钯催化的Suzuki偶联反应中,[Pd(dmba)(2-SPy)]_2显示出高效的催化活性.当催化剂用量为1 mol%时,[Pd(dmba)(2-SPy)]_2接近当量的催化溴苯与芳基硼酸化合物的Suzuki偶联反应.A dinuclear palladium complex[Pd(dmba)(2-SPy)]2 was obtained by reaction of N,N-dimethylbenzylamine(dmba)with palladium acetate and then with 2-mercaptopyridine(2-HSPy).The structure of the dinuclear palladium compound was confirmed by element analysis and X-ray single crystal diffraction.In the[Pd(dmba)(2-SPy)]2 molecular,each central Pd(II)was coordinated by one C atom and one N atom of N,N-dimethylbenzylamine,one S atom and one N of 2-mercaptopyridine,showing a typical square-planar geometry.The distance between the two Pd(II)atoms is 2.973,showing a weak metal-metal interaction.In Suzuki coupling reaction,the dinuclear palladium complex showed high catalytic activity in the presence of K 3PO 4·3H 2O in DMF and H 2O mixture solvent.

关 键 词：N N-二甲基苄胺 2-巯基吡啶 双核钯化合物 SUZUKI偶联 

分 类 号：O641.4[理学—物理化学]