4-甲氨基吡啶-铁异硫氰基配合物晶体材料的合成及性能研究

Synthesis and Properties Study of 4-Methylaminopyridine-iron Isothiocyano Complex Crystalline Materials

以FeCl_(3)·6H2O、4-甲氨基吡啶和NH_(4)SCN为原料,在甲醇和水为混合溶剂体系内,缓慢蒸发法的方式获得一种新型有机-无机杂化[Fe(NCS)_(6)][C_(6)N_(2)H_(9)]_(3)(1)晶体材料。通过红外(IR)、介电常数、X-射线单晶衍射、热稳定(TG)等测试确定该晶体的结构和性质。X-射线单晶衍射结果显示化合物1的空间群为三斜晶系P-1,晶体内通过氢键和π-π堆积相互作用呈现出较为稳定的三维氢键网状结构。材料介电常数在降温–升温过程中呈现出可逆的介电异常,显示化合物1是可逆介电异常型功能材料。

A novel organic-inorganic hybrid[Fe(NCS)_(6)][C_(6)N_(2)H_(9)]_(3)(1)crystalline material was synthesized by slow evaporation method using FeCl_(3)·6H2O,4-methylaminopyridine and NH_(4)SCN as raw materials,methanol and water as mixed solvents.The structure and properties of compound 1 were determined by infrared(IR),dielectric,X-ray single crystal diffraction,thermal stability(TG)and other tests.The X-ray single crystal diffraction test results show that the space group of compound 1 is P-1,which is belongs to triclinic system.A relatively stable three-dimensional network structure is presented in the crystal through hydrogen bonding andπ-πstacking interaction.The dielectric constant of the material presents a reversible dielectric anomaly during the process of cooling and heating,suggesting that compound 1 was a reversible dielectric anomaly functional material.