Jump to main content
Jump to site search

Issue 44, 2013
Previous Article Next Article

Stacking of metal chelating rings with π-systems in mononuclear complexes of copper(ii) with 3,6-dichloro-2,5-dihydroxy-1,4-benzoquinone (chloranilic acid) and 2,2′-bipyridine ligands

Author affiliations

Abstract

A series of four novel mononuclear complexes of copper(II) with chloranilic acid and 2,2′-bipyridine were prepared and structurally characterised by X-ray structure analysis and IR spectroscopy. The complexes exhibit square-planar, square-pyramidal and octahedral coordination. The chloranilate dianion coordinates the CuII atom in a terminal bidentate o-quinone-like mode forming a mononuclear complex species. The crystal packing of the aqua complex and the complexes with crystal water molecules are defined by hydrogen bonds. However, significant contributions are from interactions involving five-membered chelate rings with both types of ligands and intermolecular π-systems (bipyridine and chloranilate rings). The crystal packing of the complex with square planar CuII coordination is dominated by interactions of the chelate rings with π-delocalised bonds and intermolecular π-systems. The occurrence of dimorphism could be related to the different types of these interactions in the stacks. The crystal packing of the octahedral complexes of the mono- and dihydrate solvates reveal 3D-networks with pores occupied by non-coordinated bipyridine molecules.

Graphical abstract: Stacking of metal chelating rings with π-systems in mononuclear complexes of copper(ii) with 3,6-dichloro-2,5-dihydroxy-1,4-benzoquinone (chloranilic acid) and 2,2′-bipyridine ligands

Back to tab navigation

Supplementary files

Publication details

The article was received on 28 Jun 2013, accepted on 04 Sep 2013 and first published on 04 Sep 2013


Article type: Paper
DOI: 10.1039/C3DT51734A
Dalton Trans., 2013,42, 15756-15765

  •   Request permissions

    Stacking of metal chelating rings with π-systems in mononuclear complexes of copper(II) with 3,6-dichloro-2,5-dihydroxy-1,4-benzoquinone (chloranilic acid) and 2,2′-bipyridine ligands

    K. Molčanov, M. Jurić and B. Kojić-Prodić, Dalton Trans., 2013, 42, 15756
    DOI: 10.1039/C3DT51734A

Search articles by author

Spotlight

Advertisements