Stereocontrol by a pair of epimeric sugar-derived ligands of the coordination sphere of copper(II) complexes

Inorg Chem. 2008 Apr 7;47(7):2243-5. doi: 10.1021/ic702209g. Epub 2008 Mar 6.

Abstract

A pair of novel C3-epimeric sugar-derived ligands (glycoligands) with a neutral N4O donor set was synthesized. Copper(II) complexes of both ligands were obtained and characterized by X-ray crystallography. Cyclic voltammetry, electron paramagnetic resonance, and UV-vis spectroscopies showed similar electronic properties. Mirror-image CD spectra were obtained for the Cu(II) d-d band, indicating an enantiomeric character of the coordination sphere, which has been rationalized structurally. This example shows the possible predetermination of stereochemistry for complexes by ligands based on a glycoscaffold.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbohydrates / chemistry*
  • Circular Dichroism
  • Copper / chemistry*
  • Crystallography, X-Ray
  • Electron Spin Resonance Spectroscopy
  • Ligands
  • Models, Molecular
  • Molecular Structure
  • Stereoisomerism

Substances

  • Carbohydrates
  • Ligands
  • Copper