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The Ligand Field Spectra of Copper(II) Complexes

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Anthony T. Baker

University of Technology, Sydney, Department of Chemistry, Broadway, NSW 2007, AUSTRALIA

J. Chem. Educ., 1998, 75 (1), p 98

DOI: 10.1021/ed075p98

Publication Date (Web): January 1, 1998

Section:

History, Education, and Documentation

Abstract

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 (lambda_max) 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 lambda_max 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 lambda_max is dependent on the nature of the ligands and the relatively low values of molar absorptivity.

Keywords (Audience):

Upper-Division Undergraduate

Keywords (Domain):

Inorganic Chemistry

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Spectroscopy

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This article has been cited by 3 ACS Journal articles (3 most recent appear below).

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