Jump to main content
Jump to site search

Issue 23, 2017
Previous Article Next Article

A series of new mixed-ligand complexes based on 3,6-bis(imidazol-1-yl)pyridazine: syntheses, structures, and catalytic activities

Author affiliations

Abstract

Seven new mixed-ligand complexes based on L [L = 3,6-bis(imidazol-1-yl)pyridazine], namely, [Ni(L)2(SCN)2]n (1), [Cu5(L)(1,2-BDC)43-OH)2]n (2), {[Cu4(L)2(1,3-HBDC)(1,3-BDC)(μ3-OH)4]·ClO4·2.6H2O}n (3), {[Ni(L)(1,4-BDC)H2O]·0.25H2O}n (4), [Co(L)(1,3,5-H2BTC)2H2O]n (5), {[Cu2(L)(2,6-PYDC)2(H2O)2]·4.4H2O}n (6), and {[Co(L)(4,4′-OBA)]·3.725H2O}n (7) [1,2-benzenedicarboxylic acid (1,2-H2BDC), 1,3-benzenedicarboxylic acid (1,3-H2BDC), 1,4-benzenedicarboxylic acid (1,4-H2BDC), 1,3,5-benzenetricarboxylic acid (1,3,5-H3BTC), 2,6-pyridine dicarboxylic acid (2,6-H2PYDC), and 4,4′-oxydibenzoic acid (4,4′-H2OBA)], have been synthesized by solvothermal reactions. Complexes 1 and 2 possess a two-dimensional (2D) layered structure, and the 2D framework of complex 1 can be rationalized to be a four-connected {44·62} topological sql network, while 2 exhibits a similar topological network with pentanuclear [Cu53-OH)22-COO)6]2+ secondary building units (SBUs). Complex 3 presents an 8-connected sqc3 3D framework based on a chair-shaped [Cu43-OH)4]4+ SBU with a Schläfli symbol of {424·64}. Complex 4 displays a 3D framework with diamondoid topology, which includes L/Ni(II)/L helical chains. Complex 5 features a 1D chain structure formed by L ligands. Complex 6 shows a dinuclear structure, which is arranged into a 1D supramolecular chain by hydrogen-bonding interactions. The 3D framework of 7 presents a 4-connected porous architecture with a Schläfli symbol of {66}, the same as that of complex 4. The powder X-ray diffraction spectra, IR spectra, UV-vis absorption spectra and thermal stabilities of 1–7 have been investigated. Moreover, in the complex-catalyzed homocoupling reaction of 4-substituted aryl iodides, the catalytic activities of 1–7 have also been studied and discussed.

Graphical abstract: A series of new mixed-ligand complexes based on 3,6-bis(imidazol-1-yl)pyridazine: syntheses, structures, and catalytic activities

Back to tab navigation

Supplementary files

Publication details

The article was received on 25 Feb 2017, accepted on 08 May 2017 and first published on 08 May 2017


Article type: Paper
DOI: 10.1039/C7CE00394C
Citation: CrystEngComm, 2017,19, 3124-3137
  •   Request permissions

    A series of new mixed-ligand complexes based on 3,6-bis(imidazol-1-yl)pyridazine: syntheses, structures, and catalytic activities

    S. Zhou, X. Wang, C. Du, D. Wang and D. Jia, CrystEngComm, 2017, 19, 3124
    DOI: 10.1039/C7CE00394C

Search articles by author

Spotlight

Advertisements