Assembly of Five Coordination Polymers Based on 5,11,17,23-Tetra-tert-butyl-25-(carboxymethoxy)-calix [4] arene Ligand

作者：He Yuanchun^*; Guo Jiao; Xu Na; Yu Yang

来源：Chemical Research in Chinese Universities, 2017, 33(1): 44-48.

DOI：10.1007/s40242-017-6366-9

• Calix[4]arene
• Crystal structure
• Auxiliary ligand

Five coordination polymers, [Co(H3L)(2)(dib)]center dot 1.5H(2)O(1), [Cu(H3L)(2)(dib)](2), [Co(H2L)(IntPY)]center dot DMF(3), [Ni(H3L)(2)(mtpy)(H2O)]center dot 3DMF center dot H2O(4), and [Cd(H3L)(2)(pybim)]center dot 1.5H(2)O(5), have been successfully prepared from 5,11,17,23-tetra-tert-buty1-25-(carboxymethoxy)calix[4]arene, metal salts, and N-donor auxiliary ligands under hydrothermal conditions[dib=1,4-di(1H-imidazol-1-y1)butane, pybim=2-(2'-pyridyl)benzimidazole, and mtpy=4'-(4-methylpheny1)-2,2':6',2 ''-terpyridine]. Structural analysis suggests that the metal ion first joins two organic carboxylate ligands to form the independent units, which are further extended by the N-donor auxiliary ligand to give the fmal 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 OD units. Furthermore, in compounds 3 and 5, 1D supramolecular architectures are exhibited due to pi-pi interactions.

• 出版日期2017-2
• 单位新乡学院; 曲阜师范大学