Chemical Research in Chinese Universities ›› 2017, Vol. 33 ›› Issue (1): 44-48.doi: 10.1007/s40242-017-6366-9

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

HE Yuanchun1, GUO Jiao2, XU Na1, YU Yang1   

  1. 1. College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China;
    2. College of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453003, P. R. China
  • Received:2016-09-01 Revised:2016-11-22 Online:2017-02-01 Published:2016-12-12
  • Contact: HE Yuanchun,E-mail:heyc240@nenu.edu.cn E-mail:heyc240@nenu.edu.cn
  • Supported by:

    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).

Abstract:

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)]·1.5H2O(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 hy-drothermal conditions[dib=1,4-di(1H-imidazol-1-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 carboxylate ligands to form the independent units, which are further 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.

Key words: Calix[4]arene, Crystal structure, Auxiliary ligand