| 二维层状铜配位聚合物[Cu2(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 [Cu2(TFBDC)2(DMF)2]2·3MeOH·2DMF(TFBDC=tetrafluoroterephthalate; DMF=N,N-dimethyl formamide) | |
| 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=3.373 9(5) nm，b=1.569 6(2)nm，c=1.641 9(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(300～1.8 K)显示配合物中分别存在反铁磁性和铁磁性相互作用。 | |
| 关键词: 铜 配位聚合物 四氟对苯二甲酸 晶体结构 磁性 | |
| 基金项目: | |
| Abstract: 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 Cu2+ 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 Cu2+ 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. | |
| Keywords: copper coordination compound tetrafluoroterephthalatic acid crystal structure magnetic property | |
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| 朱恩静,刘 琦,陈 群,何明阳,陈圣春,黄鹤翔,杨 骞.二维层状铜配位聚合物[Cu2(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)[J].无机化学学报,2008,24(9):1428-1433. | |
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