双(3,5-二叔丁基水杨醛)缩卡巴肼二丁基锡配合物的微波溶剂热合成、结构及除草活性

摘要

The dibutyltin(Ⅳ) binuclear complexes [(Bu2Sn)2L] ·MeOH have been synthesized by the microwave methanol solvothermal reactions of n-Bu2SnO and bis(3,5-di-t-butylsalicylaldehyde) carbohydrazide (H2L1) or hiocarbohydrazide (H2L2).The structures were characterized by elemental analysis,IR,1H NMR,13C NMR and X-ray crystal diffraction.The crystal structure shows that the complexes 1 and 2 have a similar structure.The Sn1 are rendered five-coordination in a distorted trigonal bipyramidal structure.The Sn2 are rendered six-coordination in a distorted tetragonal-octahedral geometry.In addition,hydrogen bonding (O-H… N) intermolecular interactions link these molecules into one-dimensional chain in the complexes.And two complexes exhibit herbicidal activity for Portulaca oleracea,Amaranthus spinosus and Semen cassiae.%微波甲醇溶剂热中,二丁基氧化锡与双(3,5-二叔丁基水杨醛)缩卡巴肼(H2L1)及缩硫代卡巴肼(H2L2)反应,合成了2个二丁基锡双核配合物[(Bu2Sn)2L]· MeOH,对其进行了元素分析、IR、1H和13C NMR结构表征.X射线晶体衍射结构表明:配合物1和2具有类似结构的双锡核配合物,Sn1和Sn2分别与配基原子构成畸形三角双锥和畸形八面体构型.相邻分子间通过O-H…..N氢键作用.形成一维无限链状结构.配合物1和2对马齿苋、刺苋以及决明子等杂草的根和茎的生长具有明显的抑制作用.