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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 was obtained from the self-assembly of Cu (II) nitrate with tetrafluoro-terephthalic acid (H2tfbdc). It was characterized by elemental analysis, infrared spectroscopy, thermogravimetric analysis and X-ray diffraction analysis. The crystal structure of the title complex shows that the crystal of the title complex belongs to the monoclinic system with space group C2 / c. The unit cell parameters are a = 3.3739 (5) nm, b = 1.5696 (2) nm and c = 1.6419 β = 117.527 (2) °. Each copper ion coordinates with four oxygen atoms from four tetrafluoroterephthalic acid molecules and one oxygen atom in one N, N-dimethylformamide molecule to form a tetragonal conformation. Tetrafluoro-terephthalate bridges copper ions to form two-dimensional layered structures with voids, and adjacent layered structures, in turn, form three-dimensional supramolecular network structures by hydrogen bonding. The -CF groups on some benzene rings in the complex have a disordered structure. The temperature-dependent magnetic susceptibility data (300 ~ 1.8K) show that the complexes have antiferromagnetic and ferromagnetic interactions respectively.