Original Paper

Structural Chemistry

, Volume 18, Issue 1, pp 113-119

Transition metal complexes with Girard reagent-based ligands

Part III. Synthesis and characterization of salicylaldehyde Girard-T hydrazone complexes. Crystal structure of ligand and two isostructural copper(II) complexes
  • Vukadin M. LeovacAffiliated withDepartment of Chemistry, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3
  • , Goran A. BogdanovićAffiliated withVINČA Institute of Nuclear Science Email author 
  • , Valerija I. ČešljevićAffiliated withDepartment of Chemistry, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3
  • , Ljiljana S. JovanovićAffiliated withDepartment of Chemistry, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3
  • , Sladjana B. NovakovićAffiliated withVINČA Institute of Nuclear Science
  • , Ljiljana S. Vojinović-JešićAffiliated withDepartment of Chemistry, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3

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Abstract

The ligand, salicylaldehyde Girard-T hydrazonium chloride, [H2SalGT]Cl (1), and two complexes [Cu(HSalGT)X2]·H2O (X = Br(2); Cl(3)) were synthesized and their crystal structures were determined by single-crystal X-ray analysis. In the two isostructural complexes, the Cu(II) is located in a square-pyramidal environment, with the chelating ligand and one halogen atom in the basal plane and the second halogen in the apical position. The most apparent structural difference between the 1 and its complexes 2 and 3 is the orientation of the N(CH3)3 group: in 1, it is practically coplanar to the rest of the molecule, while in 2 and 3 it is oriented to the side of the axially bonded halogen, which can be explained by the C–H…X intramolecular interactions. The compounds were characterized by elemental analysis, molar conductivity, magnetic susceptibility and electronic absorption spectra.

Keywords

Girard-T reagent-based ligand Cu(II) complexes Crystal structures Electronic absorption spectra