Behavioural dynamics in the biological control of pests: role of silicon complexes |
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Authors: | Savita Belwal Nighat Fahmi R. V. Singh |
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Affiliation: | 1. Amity University Rajasthan, Jaipur 302004, India;2. Department of Chemistry, University of Rajasthan, Jaipur 302004, India |
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Abstract: | The complexes of silicon (IV) with Schiff base ligands (L1H and L2H of isatin derivatives) having a sulfur and oxygen donor system were prepared by the reactions in methanol environment. These were isolated and characterized by elemental analysis, molecular weight determinations and conductance measurements. On the basis of electronic, infrared, 1H, 13C and 29Si NMR spectral studies, trigonal bipyramidal geometry was suggested for the resulting complexes. These data support preferential binding of sulfur and oxygen atom to the silicon atom. The disease resistance activities of the ligands and their corresponding complexes were examined successfully in in vitro and in vivo experiments, against pathogenic fungi and bacteria. Results were quite encouraging and these were compared with the standard pesticides Bavistin and Streptomycin. Copyright © 2008 John Wiley & Sons, Ltd. |
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Keywords: | organosilicon (IV) complexes thio‐ and semi‐ligands spectral studies biochemical studies toxicity in vitro and in vivo study |
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