SYNTHESIS, CHARACTERIZATION, LIGAND PROPERTIES AND THEORETICAL STUDY OF SOME NEW ORGANIC TELLURIUM COMPOUNDS DRIVEN FROM INDOLE.

New series of organotellurium compounds were prepared from reaction of 3-indolylmercurric chloride(1) with TeBr4 in dioxin in mole ratio 1:1 to give indolyl tellurium tribromide(2) which reduced by hydrazine hydrate to give bis indolyl ditelluride(4). Reaction of 3-indolylmercuric chloride(1) with TeBr4 in 2:1 mole ratio afforded bis indolyltellurium dibromide(3), reduction the later compound by hydrazine hydrate gave bis indolyltelluride(5), addition of thionyl chloride and iodine gave bis indolyltellurium dichloride(6) and bis indolyltellurium diiodide(7) respectively. Reaction of bis indolyltelluride(5) with palladium, platinum, and rhodium salts, respectively, afforded new complexes, i.e, bis{bis[3-(indolyl)] telluride}palladium(II) dichlorid (8) bis{bis[3-(indolyl)] telluride} platinum(II) dichloride (9) and bis{bis[3-(Indolyl)]telluride}rhodium(III) trichloride (10) in good yield respectively. All compounds were characterized by IR, Elemental analysis, Conductance measurements, 1H-NMR, and Mass spectroscopy. Optimization structures and some of the selected structural parameters (charges and bond lengths) of the optimized geometries of all the prepared compounds were determined. The three-dimensional mapped isosurface of the electrostatic potential for selected compounds 2 and 5 were plotted.