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Title
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Synthesis and characterization of new binuclear complexes mercury(II) of pyridinium ylide
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Type
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Presentation
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Keywords
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Pyridinium ylides, ambidentate ligands, Hg(II), pharmacological, binuclear products
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Abstract
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Pyridinium ylides are important reagents in organic chemistry, especially in the synthesis of naturally occurring products with biological and pharmacological activities [1]. These compounds have been used as reducing agents in coordination chemistry. They can behave as ambidentate ligands, because the carbanion located at the Cα of the ylide or the enolate oxygen is able to donate electron density to a transition metal [2]. Herein, we report the synthesis and characterization of new binuclear and polymeric complexes of Hg(II) derived from pyridinium ylide. PyridinePyridinePyridine PyridinePyridine and 2,3- dibromo acetophenone in 1:1 ratio react in acetone as solvent to produce the related pyridiniumpyridiniumpyridinium pyridiniumpyridinium pyridinium salt. For synthesis ylide a solution of potassium carbonate in water was added to a solution of pyridinium salt in water. The mixture was stirred for 20 min and then extracted with dichloromethane. Reaction of pyridinium ylides C5H5NCHC(O)C6H5 (m-Br) (ylide) with HgX2 (X = Cl, Br and I) in 1:1 ratios leads to binuclear products of the type [HgX2(ylide)]2. Characterization of the complexes by IR, 1H and 13C NMR spectroscopy confirmed coordination of the ylide to the metal through the carbon atom (Fig. 1).
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Researchers
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(Third Researcher), seyyed javad seyyadzadeh sabounchei (Second Researcher), (First Researcher)
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