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Synthesis and characterization of imidazole–triphenylsilane complexes

Authors
Journal
Journal of Organometallic Chemistry
0022-328X
Publisher
Elsevier
Publication Date
Volume
695
Identifiers
DOI: 10.1016/j.jorganchem.2010.03.005
Keywords
  • Silica Biomineralization
  • Silicatein Model Complexes
  • Triphenylsilane Complexes
Disciplines
  • Biology

Abstract

Abstract Three imidazole-based triphenylsilane complexes were synthesized as preliminary model complexes to those that have been proposed as intermediates during the enzymatic biomineralization of silica by certain sponges. The active site of the enzyme includes histidine-serine moieties that appear to be vital to functionality. The model compounds include ligands that are bound to the silicon via a Si–O–C linkage and have a potentially chelating imidazole ring. Synthesis of these compounds was achieved by reaction of triphenylchlorosilane with two equivalents of ligand, one equivalent acting as a base for the HCl generated during the reaction. The compounds are highly reactive toward hydrolysis and were characterized by NMR, MS, elemental analysis, and X-ray crystallography.

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