Covalently immobilized, silica gel or resin-supported C-protected cysteine or cystine Fe and Ni complexes - synthesis and structural characterization with FT-IR spectroscopy

Csendes, Zita and Bugris, Valéria and Sebők, P. and Major, Zs. and Kiss T., János and Pálinkó, István (2009) Covalently immobilized, silica gel or resin-supported C-protected cysteine or cystine Fe and Ni complexes - synthesis and structural characterization with FT-IR spectroscopy. In: Insights into Coordination, Bioinorganic and Applied Inorganic Chemistry. Slovak University of Technology, Bratislava, pp. 54-61. ISBN 978-80-227-3085-3

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Abstract

In this work the syntheses of covalently grafted C-protected Fe(III)− or Ni(II)−L-cysteine and Fe(III)− or Ni(II)−L-cystine complexes onto a surface-modified silica gel or Merrifield’s resin are described. Conditions of the syntheses were varied and the obtained structures were studied by classical analytical (titration) as well as spectroscopic (infrared, atomic absorption) methods. It was found that the sulphur atoms in the molecules acted as primary coordination sites, while the other coordinating groups varied depending on whether the complexes were formed under ligand-poor or ligand-excess conditions.

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