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Heavy Metal Chemistry of Mixed Donor Macrocyclic Ligands: Strategies for Obtaining Metal Ion Recognition

  • Leonard F. Lindoy

Abstract

The metal ion preferences of mixed donor coordination sites are often difficult to predict, especially when transition and other heavy metal ions are involved. For example, it can be quite difficult to assign binding preferences to many metal ion binding sites in biological systems even though a knowledge of the metal ion chemistry of such a site is often crucial to an understanding of its biochemical function. In one sense, it is strange that this is still the case since classical coordination chemistry has now been studied for more than a century. Of course, the HSAB theory [1] or the a and b classification [2] provide useful guidelines for predicting and interpreting binding preferences but their usefulness becomes less when mixed donor sites of the type just mentioned are being considered. Alternatively, it is sometimes possible to predict the metal ion binding characteristics of such sites by analogy with the behavior of well studied “simple” ligand systems but this lacks the virtue of wide applicability and hence is less than satisfactory.

Keywords

Ether Oxygen Ligand System Ring Complex Steric Crowding Ligand Series 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1990

Authors and Affiliations

  • Leonard F. Lindoy
    • 1
  1. 1.Department of Chemistry and BiochemistryJames Cook University of North QueenslandTownsvilleAustralia

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