New coordination polymers, formulated as [Zn($\mu $-sipH)($\mu $-apim)]$\cdot $3H$_2}$O} $_n}$ (1) and [Cd($\mu $-sip)(H$_2}$O)$_2}$ (apimH)]$\cdot $3H$_2}$O}$_n}$ (2) were synthesized based on the 1-(3-aminopropyl)imidazole (apim) along with 5-sulfoisophthalate (sip) ligands. The complexes were synthesized under mild hydrothermal conditions. All the complexes were characterized by elemental analysis, FT-IR spectroscopy, and single-crystal X-ray diffraction studies. The X-ray crystallographic studies of 1 and 2 reveal Zn(II) and Cd(II) ions are $\mu $-bridged by dianionic sipH and trianionic sip ligands in bis(monodentate) and bis(bidentate) coordination mode, respectively, to generate 1D polymer chains. In complex 1, the adjacent chains are linked by two apim ligands to form a 1D nanotubular structure. Complex 2 is the first example of a protonated apimH ligand. In the complexes the adjacent 1D chains extend into a 3D supramolecular network by hydrogen bonds. The thermal decomposition behavior and photoluminescent property of the complexes are also discussed herein.
新型协调聚合物[Zn($\mu $-sipH)($\mu $-apim)]$\cdot $3H$_2}$O} $_n}$ (1) 和[Cd($\mu $-sip)(H$_2}$O)$_2}$(apimH)]$\cdot $3H$_2}$O}$_n}$ (2)是基于1-(3-
氨丙基)
咪唑(apim)以及5-
磺酸异苯二
甲酸(sip)
配体合成的。这些复合物在温和的
水热条件下合成。所有复合物均通过元素分析、傅里叶变换红外光谱(FT-IR)和单晶X射线衍射研究进行了表征。对1和2的X射线晶体学研究表明,Zn(II)和Cd(II)离子分别通过二阴离子sipH和三阴离子sip
配体以双(单齿)和双(双齿)配位方式$\mu$-连接,从而形成一维聚合物链。在复合物1中,邻近链通过两个apim
配体连接形成一维纳米管结构。复合物2是质子化apimH
配体的第一个例子。在这些复合物中,相邻的一维链通过氢键扩展成三维超分子网络。文中还讨论了这些复合物的热分解行为和光致发光特性。