二维层状铜配位聚合物[Cu_2(TFBDC)_2(DMF)_2]_2·3MeOH·2DMF的合成、晶体结构和磁性(TFBDC=四氟对苯二甲酸根;DMF=N,N-二甲基甲酰胺)  

Synthesis,Crystal Structure and Magnetic Property of 2D layer Copper Coordination Compound [Cu_2(TFBDC)_2(DMF)_2]_2·3MeOH·2DMF(TFBDC=tetrafluoroterephthalate; DMF=N,N-dimethyl formamide)

作　　者：朱恩静[1] 刘琦[1] 陈群[1] 何明阳[1] 陈圣春[1] 黄鹤翔[1] 杨骞[1] 

机构地区：[1]江苏工业学院化学化工学院江苏省精细石油化工重点实验室,常州213164

出　　处：《无机化学学报》2008年第9期1428-1433,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No20671045);江苏省教育厅自然科学基金(No05KJB150023);江苏省精细石油化工重点实验室科学基金;江苏省科技创新团队资助项目

摘　　要：由Cu(Ⅱ)的硝酸盐与四氟对苯二甲酸(H2tfbdc)的自组装得到标题配合物。用元素分析、红外光谱、热重分析、X-衍射单晶结构分析等对其进行了表征。晶体结构表明,标题配合物的晶体属单斜晶系,空间群为C2/c,晶胞参数:a=3.3739(5)nm,b=1.5696(2)nm,c=1.6419(2)nm,β=117.527(2)°。每个铜离子与来自4个四氟对苯二甲酸分子的4个氧原子和1个N,N-二甲基甲酰胺分子中的氧原子配位,形成四方锥的配位构型。四氟对苯二甲酸根桥连铜离子形成具有孔穴的二维层状结构,相邻的层状结构又通过氢键形成三维的超分子网络结构。配合物中一些苯环上的-CF基团具有无序结构。变温磁化率数据(300～1.8K)显示配合物中分别存在反铁磁性和铁磁性相互作用。The title complex [Cu2（TFBDC）2（DMF）2]2·3MeOH·2DMF（TFBDC =tetrafluoroterephthalate; DMF=N,N- dimethyl formamide） was synthesized by reaction of tetrafluoroterephthalatic acid with copper nitrate trihydrate in N,N-dimethyl formamide and methanol solution. The complex was characterized by elemental analysis, IR spectra, TG and X-ray single crystal structure analysis. This complex crystallizes in the monoclinic system with space group C2/c. Each Cu^2＋ ion is five-coordinated by four oxygen atoms from four tetrafluoroterephthalates and one oxygen atom from one N,N-dimethyl formamide molecule, forming a distorted square-pyramidal coordination geometry. The tetrafluoroterephthalate ligands bridge Cu^2＋ ions to form a two-dimensional planar network with cavities. The adjacent planar layers are connected through hydrogen bonds, to form a three-dimensional supramolecular architecture. Some-CF groups from -C6F4- show disorder in the title complex. The magnetic susceptibility data in temperature range （300-1.8 K） show that there are antiferromagnetic and ferromagnetic exchange interactions respectively in the title compound. CCDC： 667992.

关 键 词：铜 配位聚合物 四氟对苯二甲酸 晶体结构 磁性 

分 类 号：O614.121[理学—无机化学]