The Ligand Field Spectra of Copper(II) Complexes

• Anthony T. Baker ^[1]
  1. [1] University of Technology

     University of Technology

     Rusia

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 75, Nº 1 (January), 1998, págs. 98-99
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • A practical exercise for introducing students to ligand field spectra and the spectrochemical series, through the study of copper(II) species, is presented. Incorporated in the exercise is the preparation of a simple coordination compound: diaquabis(ethylenediamine)copper(II) iodide. The position of maximum absorbance (lambdamax) for each of the spectra can be used to compare the field strengths of O- and N-donor ligands. The value of the absorbance at lambdamax can be used to derive a value of the molar absorptivity. The principal features of ligand field spectra are clearly demonstrated: the great breadth of the spectral bands, that the position of lambdamax is dependent on the nature of the ligands and the relatively low values of molar absorptivity.