两个基于β-二酮席夫碱Ag(Ⅰ)配合物合成及其晶体结构  

Syntheses,Structures of Two Silver Coordination Complexes Based on Bis(β-diketone) Schiff Base

作　　者：杨先炯[1] 张奇龙[1] 

机构地区：[1]贵州医科大学化学教研室,贵阳550025

出　　处：《科学技术与工程》2017年第31期181-185,共5页Science Technology and Engineering

基　　金：贵州省教育厅自然科学研究项目(黔教合KY字[2015]415号)资助

摘　　要：合成了两个席夫碱配体L^1(N,N'-双(苯甲酰丙酮)-1,2-乙二胺)和L^2(N,N'-双(乙酰丙酮)-1,2-丙二胺),然后将配体L^1和L^2分别与Ag NO_3进行配位反应,得到配合物[Ag_2(L^1)(NO_3)_2]_n(1)和[Ag_2(L^2)_2(NO_3)_2]_n(2),采用红外光谱、元素分析、热重分析、X-粉末衍射和X-射线晶体衍射对配合物进行了表征。结果表明:配合物1系三斜晶系,空间群为P-1;配合物2系单斜晶系,空间群为P2_1/c.在配合物1中,每个Ag(Ⅰ)离子都为扭曲三角双锥的配位模式,分别与配体L^1的O原子,另外一个配体L^1的γ-C原子,一个NO_3^-的两个O原子,另外一个NO_3^-的一个O原子配位形成二维网状结构。在配合物2中,每个Ag(Ⅰ)离子也均为扭曲三角双锥的配位模式,分别与同一配体L^2的两个γ-C原子,另外一个配体L^2的O原子以及NO_3^-的两个O原子配位形成一维链状结构。Two Silver(Ⅰ)complexes,namely[Ag_2(L^1)(NO_3)_2]_n(1)and[Ag_2(L^2)_2(NO_3)_2]_n(2),have been obtained by the reaction of Ag NO_3with two different bis(β-diketone)Schiff bases(L^1=N,N'-dibenzoylacetone-1,2-diaminoethane,and L^2=N,N'-diacetylacetone-1,2-diaminopropane)in the ethanol solution.The structures of these complexes were characterized by infrared spectroscopy,elemental analysis,thermogravimetry(TGA)analysis,powder X-ray diffraction and X-ray single-crystal diffraction.The crystal structure demonstrated that the complex 1 is triclinic,with space group P-1,the complex 2 is monoclinic,with space group P2_1/c.In the complex 1,every Ag(Ⅰ)ion has a distorted trigonal bipyramidal coordination geometry,and coordinates with theγ-C atom and O atom of the adjacent ligand,two O atoms on NO_3^-and one O atoms on another NO_3^-to form a two-dimensional net structure.In the complex 2,every Ag(Ⅰ)ion has a distorted trigonal bipyramidal coordination geometry,and coordinates with twoγ-C atom from the same ligands and one O atom from the adjacent ligand and two O atoms on NO_3^-to form a one-dimensional chain.

关 键 词：苯甲酰丙酮 乙酰丙酮 席夫碱 银配合物 晶体结构 

分 类 号：O614.122[理学—无机化学]