Finally the importance of this type of reaction is to

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Unformatted text preview: ng alkali halides in synthesis of metal complexes help in substitution of chloride by bromide and/or iodide followed by reduction in case of Cu(II) or oxidation in case of Co(II). This study suggests the dangerous of using KBr as a mulling agent in IR spectroscopy. 128 3rd ICYC 2010 Universiti Sains Malaysia INO-O12 23rd-25th June 2010 SYNTHESIS, SPECTROSCOPIC STUDIES AND STRUCTURAL CHARACTERIZATION OF SOME IMIDAZOLIUM SALTS Abbas Washeel Salman, Rosenani A. Haque and Teoh Siang Guan School of Chemical Sciences, University Sains Malaysia, 11800 Pulau Pinang, Malaysia E-mail: abbas_wshel@yahoo.com New imidazolium salts were synthesized by the reaction of m, p-bis(bromomethyl) benzene, 1,3bis(bromomethyl)toluene and 1,3-bis(bromomethyl)mesitylene with 1-methylimidazole and 1butylimidazole. The halide salts was converted to corresponding hexafluorophosphate salts by 1 13 metathesis reaction, and then characterized by elemental analysis CHN, H, C NMR and X-ray 1 13 crystallography for two of the prepared compounds. H and C NMR displayed the expected spectra. The structural studies were shown that the hexafluorophosphate anions link the cations into a three dimensional network via intermolecular C—H·····F hydrogen bonds. INO-O13 SYNTHESIS, CHARACTERIZATION AND CRYSTAL STRUCTURES OF SCHIFF BASES AND THEIR METAL COMPLEXES DERIVED FROM SUBSTITUTED DITHIOCARBAZATES Shatila Hazwani Rahim, *Karen A. Crouse and M.Ibrahim M.Tahir Department of Chemistry, Universiti Putra Malaysia, 43400 Serdang, Selang or, Malaysia E-mail: crouse@pc.jaring.my Four different dithiocarbazates, S-benzyldithiocarbazate, S2-methylbenzyldithiocarbazate, S3methylbenzyldithiocarbazate and S4-methylbenzyldithiocarbazate have been prepared and were reacted with 2-pentanone and 3-pentanone to give new bidentate NS Schiff bases. The complexes of general formula, [M(NS)2] [(HNS = substituted dithiocarbazate Schiff bases, and M= Cd(II), Cu(II), Ni(II) and Zn(II)] were prepared by reacting these metal salts with the synthesized Schiff bases in an ethanol/acetonitrile mixture. All compounds were characterized using standard physico -chemical and spectroscopic techniques. X-ray crystallographic structural analysis of S-4-methylbenzyl-2-(pentan-3yli...
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This note was uploaded on 02/17/2011 for the course CHEMISTRY 101 taught by Professor Csr during the Spring '11 term at University of Louisville.

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