摘要
Five coordination polymers, [Co（H3L）2（dib）]. 1.5H2O（1）, [Cu（H3L）2（dib）]（2）, [Co（H2L）（mtpy）].DMF（3）, [Ni（H3L）2（mtpy）（H2O）].3DMF.H2O（4）, and [Cd（H3L）2（pybim）]. 1.5H20（5）, have been successfully prepared from 5,11,17,23-tetra-tert-butyl-25-（carboxymethoxy）calix[4]arene, metal salts, and N-donor auxiliary ligands under hydrothermal conditions[dib=l,4-di（1H-imidazol-l-yl）butane, pybim=2-（2＇-pyridyl）benzimidazole, and mtpy=4＇-（4- methylphenyl）-2,2＇：6＇,2＂-terpyridine]. Structural analysis suggests that the metal ion first joins two organic carboxy- late ligands to form the independent units, which are fulther extended by the N-donor auxiliary ligand to give the final structure. Compounds 1 and 2 display 1D infinite chains bridged by a flexible bidentate dib ligand. Compounds 3-5, with multidentate chelate ligands, reveal discrete 0D units. Furthermore, in compounds 3 and 5, 1D supramolecular architectures are exhibited due to π-π interactions.
Five coordination polymers, [Co（H3L）2（dib）]. 1.5H2O（1）, [Cu（H3L）2（dib）]（2）, [Co（H2L）（mtpy）].DMF（3）, [Ni（H3L）2（mtpy）（H2O）].3DMF.H2O（4）, and [Cd（H3L）2（pybim）]. 1.5H20（5）, have been successfully prepared from 5,11,17,23-tetra-tert-butyl-25-（carboxymethoxy）calix[4]arene, metal salts, and N-donor auxiliary ligands under hydrothermal conditions[dib=l,4-di（1H-imidazol-l-yl）butane, pybim=2-（2＇-pyridyl）benzimidazole, and mtpy=4＇-（4- methylphenyl）-2,2＇：6＇,2＂-terpyridine]. Structural analysis suggests that the metal ion first joins two organic carboxy- late ligands to form the independent units, which are fulther extended by the N-donor auxiliary ligand to give the final structure. Compounds 1 and 2 display 1D infinite chains bridged by a flexible bidentate dib ligand. Compounds 3-5, with multidentate chelate ligands, reveal discrete 0D units. Furthermore, in compounds 3 and 5, 1D supramolecular architectures are exhibited due to π-π interactions.
基金
Supported by the National Natural Science Foundation of China（Nos.21601104, 21501108）, the Natural Science Foundation of Shandong Province, China（No.ZR2016BQ19）, the Science and Technology Plan Project for Colleges and Universities in Shandong Province, China（No.J16LC01）, the Doctoral Foundation of Shandong Province, China（No.BS2014NJ015）, and the Scientific Research Foundation of Qufu Normal University, China（No.xkj201604）.
