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Shri R. K. Parikh Arts & Science College, Petlad-388 450, Gujarat, India Shri Natvarsinhji Arts & Science & S. G. Patel Commerce College, Chhotaudepur-391 165, Gujarat, India Formerly Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar-388 120, Gujarat, India E-mail : jdjoshi314@gmail.com Manuscript received online 19 October 2012, revised 28 December 2012, accepted 04 January 2013 Inorganic compounds of transition and inner transition metal ions play an important role in various chemical reactions. Calcium and lanthanides are similar in their chemical behavior, but nature has selected only calcium in various biochemical processes. Therefore Lnlll metal ions inorganic coordination polymers have been selected for the study of antimicrobial and catalytic activity. In coordination polymers superior behavior of united inorganic and organic moiety is observed as catalyst. It is superior to pure organic or inorganic material alone. Coordination polymers of HEAP-1,3- BD poly[(2-hydroxy-4-ethoxy acetophenone)-1,3-butylene)] with LaIII, PrIII, NdIII , SmIII, GdIII, TbIII and DyIII metalions have been synthesized and characterized by elemental analyses, electronic spectra, magnetic susceptibilities, FTIR, NMR, Scanning Electronic Microscopy (SEM) and thermogravimetric analyses. The metal ligand ratio is 1 : 2 in all the coordination polymers. High thermal stability of coordination poly chelates indicates their polymeric nature. Catalytic activity of selected coordination polymers was studied for important organic synthesis. It is found that polymer metal chelate complexes are efficient and effective catalyst in the Biginelli three component, one-pot synthesis of 3,4- dihydropyrimidin-2(1H)-ones. Antimicrobial activity of isolated LnIII-coordination polymers against \(Escherichia\) \(coli\), \(Bacillus\) \(subtilis\), \(Staphylococcus\)\( aureus\) (bacteria) and \(Saccharomyces\) \(cerevisiae\) (yeast) were measured. In compared to resin, polymer metal chelate complexes showed better antimicrobial activity. It was observed from the study that the Lnlll-coordination polymers act as an efficient and effective catalysts and antimicrobial agents. The coordination polymers can be used as an economical and eco-friendly catalysts for selected organic. synthesis with different aldehydes and β-ketoesters. |
