异佛尔酮类镉配合物的晶体结构及荧光性质

Crystal structures and fluorescent properties of two cadmium complexes based on isophorone

将(E)-2-(3-(4-(1H-三唑-1-基)苯乙烯基)-5,5-二甲基环己基-2-烯亚基)丙二腈(L)与Cd(OAc)2、CdI2自组装制备了配合物[CdL2(OAc)2]·2H2O(1)和CdL2I2(2)。运用X射线单晶衍射仪测定了配合物1和2的结构。配合物1为三斜晶系,中心Cd原子采取六配位模式,即与2个配体的氮原子、2个CH3COO-和2个H2O分子中的氧原子形成一个拉长的近似正八面体。而配合物2为单斜晶系,Cd原子采用四配位模式,与2个配体的氮原子和2个I-形成V型分子。这些分子通过分子间的氢键和π-π相互作用形成多维超分子结构。荧光和热重分析表明,1和2具有较强的荧光和较好的热稳定性。

Two complexes [CdL2 （OAc）2 ]·2H2 O （1）and CdL2 I2 （2）have been obtained from self-assembly between （E）-2-（3-（4-（1H-triazol-1-yl）styryl）-5,5-dimethylcyclohex-2-enylidene）malononitrile （L）and Cd（OAc）2 ,and CdI2 ,respectively.The crystal structures of complexes 1 and 2 were determined by X-ray single-crystal diffraction analysis.Complex 1 belongs to the triclinic system,the center Cd atoms is six-coordinated by two triazole nitrogen atoms from two L ligands and four oxygen atoms from two acetate ions and two H2 O molecules to form a dreich approximate regular octahedral geometry.While complex 2 crys-tallizes in the monoclinic system,the Cd atom is located in a distorted tetrahedral geometry and coordinated with two terminal I atoms and two nitrogen atoms of two triazolyl groups to form V-type structural molecules.These molecules are further linked into high-dimensional supramolecular structures through intermolecular hydrogen bonds andπ-πinteractions.The fluorescence and thermogravimetric analysis of complex 1 and 2 indicated that they exhibit strong emission and high thermal stabilities.