Chem. J. Chinese Universities ›› 2018, Vol. 39 ›› Issue (5): 861.doi: 10.7503/cjcu20170650

Previous Articles     Next Articles

Synthesis, Structure and Electrochemical Properties of Metal Cobalt Complexes with Interpenetrating Structures

ZHAO Changjiang, LIU Xin, TIAN Li, ZHAO Lun*   

  1. College of Chemistry, Changchun Normal University, Changchun 130032, China
  • Received:2017-09-26 Online:2018-03-29 Published:2018-03-29
  • Contact: ZHAO Lun
  • Supported by:
    † Supported by the Science and Technology Development Planning of Jilin Province, China(No.20170101098JC) and the Graduate Education Innovation Fund of Changchun Normal University, China(No.cscxy2017026)

Abstract:

Using multidenate 4,4'-(phenylazanediyl)dibenzoic acid(H2L) and 1,3-bis(imidazol-l-yl)benzene(B), 3,5-bis(imidazol-l-yl)pyridine(bimp) or 1,4-bis(imidazol-l-yl)benzene(B') as ligands under solvothermal conditions, three new metal-organic frameworks with interpenetrating structure, {[CoLB]·H2O}n(1), {[Co2L2(bimp)0.5]·3H2O}n(2) and {[Co2L2B'2]·2DMF}n(3), were synthesized. The complexes were characterized by single-crystal X-ray diffraction(XRD), thermal analysis and powder X-ray diffraction(PXRD). Complexes 1—3 all crystallize in the monoclinic system, with C2/c(complex 1), P2/n(complex 2) and P21(complex 3) space group, respectively. In complexes 1 and 3, Co2+ forms a tetracoordinate geometry, whereas it forms a five-coordinated geometric configuration and exists as a dual-core paddle-shaped structural unit [Co2(CO2)4] in complex 2. Complexes 1 and 2 give a 2-fold interpenetrating three-dimensional(3D) supramolecular networks, while complex 3 exhibits a 4-fold interpenetrating 3D framework. The results of electrochemical studies show that complexes 1—3 are electrochemically active substances with good electrochemical reversibility.

Key words: Metal-organic framework(MOF), Cobalt complex, Interpenetrating structure, Cyclic voltammetry

TrendMD: