Jump to main content
Jump to site search

Issue 3, 2008
Previous Article Next Article

Zn(II) coordination architectures with mixed ligands of dipyrido[3,2-d ∶ 2′,3′-f]quinoxaline/2,3-di-2-pyridylquinoxaline and benzenedicarboxylate: syntheses, crystal structures, and photoluminescence properties

Author affiliations

Abstract

Five new Zn(II) metal–organic coordination polymers, [Zn2(L1)2(Dpq)2]·H2O (1), [Zn(L2)(Dpq)(H2O)] (2), [Zn(L3)(Dpq)(H2O)]2 (3), [Zn(Dpdq)(L3)] (4) and [Zn(Dpdq)(L4)]·H2O (5) (Dpq = dipyrido[3,2-d∶2′,3′-f]quinoxaline, Dpdq = 2,3-di-2-pyridylquinoxaline, H2L1 = benzene-1,2-dicarboxylic acid, H2L2 = benzene-1,3-dicarboxylic acid, H2L3 = benzene-1,4-dicarboxylic acid, H2L4 = biphenyl-4,4′-dicarboxylic acid), have been hydrothermally synthesized and structurally characterized by elemental analyses, IR spectroscopy, and single-crystal X-ray diffraction analyses. Single-crystal X-ray analyses show that complexes 14 possess chain structures which are further assembled to form four three-dimensional (3-D) frameworks by π–π stacking and/or hydrogen-bonding interactions, while a similar chain of 5 has a two-dimensional (2-D) network packed by π–π stacking and hydrogen-bonding interactions. In 13, the Dpq ligand takes a chelating coordination mode while the other two nitrogen atoms did not coordinate to the Zn(II) ions. In 4 and 5, the Dpdq ligands have two coordination modes. The structural differences of the benzenedicarboxylate ligands and N-containing rigid/flexible chelating ligands have a great influence on the geometries of the corresponding complexes. This result also shows that intramolecular/intermolecular weak interactions play an important role in the formation of supramolecular networks, especially in linking low-dimensional entities into high-dimensional supramolecular frameworks. In addition, complexes 1 and 35 exhibit blue emission in the solid state at room temperature.

Graphical abstract: Zn(ii) coordination architectures with mixed ligands of dipyrido[3,2-d ∶ 2′,3′-f]quinoxaline/2,3-di-2-pyridylquinoxaline and benzenedicarboxylate: syntheses, crystal structures, and photoluminescence properties

Back to tab navigation

Supplementary files

Publication details

The article was received on 23 Apr 2007, accepted on 17 Sep 2007 and first published on 05 Oct 2007


Article type: Paper
DOI: 10.1039/B706071H
CrystEngComm, 2008,10, 349-356

  •   Request permissions

    Zn(II) coordination architectures with mixed ligands of dipyrido[3,2-d ∶ 2′,3′-f]quinoxaline/2,3-di-2-pyridylquinoxaline and benzenedicarboxylate: syntheses, crystal structures, and photoluminescence properties

    X. Wang, Y. Bi, G. Liu, H. Lin, T. Hu and X. Bu, CrystEngComm, 2008, 10, 349
    DOI: 10.1039/B706071H

Search articles by author

Spotlight

Advertisements