Xrd analysis indicates the increase in catalysts

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Unformatted text preview: cies leached out into the solution, enabling the catalyst to be reused several times without losing their catalytic efficiency. INO-O9 SYNTHESIS AND CHARACTERIZATION OF ORGANOTIN(IV) COMPLEXES WITH 2-HYDROXY-1NAPHTHALDEHYDE-4-HYDROXYBENZHYDRAZONE LIGAND. X-RAY CRYSTAL STRUCTURE OF [Bu2Sn (HNHBH)] Norrihan Sam, M.A. Affan and Fasihuddin Ahmad Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia E-mail: [email protected] 2-hydroxy-1-naphthaldehyde-4-hydroxybenzhydrazone ligand (HNHBH) (1) was derived from the condensation reaction of 4-hydroxybenzhydrazide with 2-hydroxy-1-naphthaldehyde. Six new organotin(IV) complexes with general formula RSnCl3 (R= Me, Bu and Ph) and R2SnCl2 (R= Me, Bu and Ph) have been synthesized by direct reaction of 2-hydroxy-1-naphthaldehyde-4-hydroxybenzhydrazone (HNHBH) (1), base and organotin(IV) chloride(s) in absolute methanol under nit rogen atmosphere. All organotin(IV) complexes (2-7) were characterized by elemental analyses, molar conductivity, UV -Vis, FT1 IR and H NMR spectral studies. Among them, dibutyltin(IV) complex ( 4) has been characterized by X ray crystallography diffraction analyses. Single crystal suitable for X-ray analyses was obtained from single solvent diethylether solution at room temperature. 127 23rd-25th June 2010 3rd ICYC 2010 Universiti Sains Malaysia INO-O10 KINETICS, MECHANISM, AND COMPUTATIONAL STUDIES OF RHENIUM-CATALYZED SULFUR AND OXYGEN ATOM TRANSFER REACTIONS Abdellatif Ibdah, William S. Jenks, and James H. Espenson Department of Chemistry, King Fahd University of Petroleum & Minerals, P.O. Box 1948 Dhahran 31261, Saudi Arabia E-mail: [email protected] The oxorhenium(V) dimer {MeReO(mtp)}2 catalyzes sulfur atom transfer from thiiranes to triarylphosphines according to the rate law, v = k[Thiirane][Re]. The rate constant is independent of -1 -1 arsine concentration and has the values 5.58 0.08 L mol s at 25.0 °C in CDCl3 for cyclohexene sulfide and 2 for propylene sulfide. Arsine enters the catalytic cycle at...
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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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