一维配位聚合物2-巯基-5-甲基-1,3,4-噻重氮锌钴的合成、结构与性能  

One-dimensional Coordination Polymers Generated from Organosulfur Ligand:Synthesis,Structure,Fluorescence and Magnetic Properties

作　　者：王磊[1,2] 孙金绪[1] 董文钧[2] 施展[2] 冯守华[2] 

机构地区：[1]青岛科技大学化学与分子工程学院,生态化工教育部重点实验室,青岛266042 [2]吉林大学无机合成与制备化学国家重点实验室,长春130012

出　　处：《高等学校化学学报》2009年第1期19-22,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20701023;20701033)资助

摘　　要：于中温混合溶剂热体系中合成出2种同构的一维配位聚合物[Zn(MMTT)2]n和[Co(MMTT)2]n(MMTT=2-巯基-5-甲基-1,3,4-噻重氮),并进行了单晶结构解析、红外、热重、荧光及磁性等表征.晶体同属单斜晶系,C2/c空间群.[Zn(MMTT)2]n的晶胞参数:a=1.40432(8)nm,b=1.13824(5)nm,c=0.72378(4)nm,β=101.425(3)°,V=1.13400(10)nm3;[Co(MMTT)2]n的晶胞参数:a=1.4001(9)nm,b=1.1142(9)nm,c=0.7403(3)nm,β=107.84(6)°,V=1.0994(12)nm3.化合物中金属原子采取四面体构型,与MMTT配体分子相互连接形成无限一维链;链与链之间通过配体间弱的C—H…S氢键连接而形成三维超分子网络结构.Two new one-dimensional （ 1D ） coordination polymers [ M （ 2-mercapto-5-methyl-1, 3, 4- thiadiazole） 2 ] n [ M = Zn （ 1 ）, Co （2） ], were synthesized under solvothermal conditions and characterized by single crystal X-ray diffraction, FTIR, elemental analysis, and thermogravimetric analysis. Both two com- pounds crystallize in the monoclinic space group C2/c with analogous structures, in which the metal center exhibit distorted tetrahedral coordination geometries. The deprotonated 2-mercapto-5-methyl-1,3,4-thiadiazole molecule as a μ2-ligand linkers the metal center into a 1D chain, which are luther linked by weak C-H…S bonds into a three-dimensional supramoleeular framework. At room temperature, both two compounds exhibit intense photoluminescence. On the basis of the results of TG-DTA analyses, the structure is thermally stable up to 210 ℃ for compound 1 and 260 ℃ for compound 2. The magnetic behavior of compound 2 was studied.

关 键 词：配位聚合物 2-巯基-5-甲基-1 3 4-噻重氮锌/钴 晶体结构 磁性 巯基配体 

分 类 号：O614[理学—无机化学]