Mono‐ and heterodi‐nuclear complexes of aluminium: synthesis,characterization and antifungal activity |
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| Authors: | Vaishali Vajpayee Y P Singh Durgesh Nandani Amla Batra |
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| Institution: | 1. Department of Chemistry, University of Rajasthan, Jaipur 302 004, India;2. Department of Botany, University of Rajasthan, Jaipur 302 004, India |
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| Abstract: | Some new types of mononuclear derivatives, AlL(1–4)L(1–4)H ( 1a–1d ) of aluminium were synthesized by the reaction of Al(OPri)3 and LH2 XC(NYOH)CHC(R)OH], X = CH3, Y = (CH2)2, R = CH3(L1H2); X = C6H5, Y = (CH2)2, R = CH3(L2H2); X = CH3, Y = (CH2)3, R = CH3(L3H2); X = C6H5, Y = (CH2)3, R = CH3(L4H2) in 1:2 molar ratio in refluxing benzene. Reactions of AlL(1–4)L(1–4)H with hexamethyldisilazane in 2:1 molar ratio yielded some new ligand bridged heterodinuclear derivatives AlL(1–4)L(1–4)SiMe3 ( 2a – 2d ). All these newly synthesized derivatives were characterized by elemental analysis and molecular weight measurements. Tentative structures were proposed on the basis of IR and NMR spectra (1H, 13C, 27 Al and 29Si) and FAB‐mass studies. Schiff base ligands and their mono‐ and heterodi‐nuclear derivatives with aluminium have been screened for fungicidal activities. These compounds showed significant antifungal activity against Aspergillus niger and A. flavus. Copyright © 2007 John Wiley & Sons, Ltd. |
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| Keywords: | heterodinuclear compounds pentacoordinated aluminium tetracoordinated silicon multinuclear NMR FAB mass spectrometry |
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