1Department of Chemistry, Faculty of Sciences, Shiraz University, Postcode 71454, Shiraz, I.R. IRAN
2Department of Chemistry, Faculty of Sciences, Baghdad University, Baghdad, IRAQ
The equilibrium constant of adduct formation between some triorganotin chloride of the type R3SnCl (R=C6H5, p-CH3C6H4, n-CH3)CH2)3, C6H5-CH2 and Lewis bases Cl¯, Br¯, and I¯, were measured in 50% v/v ethanol-water solvent spectrophotometrically. The average equilibrium constant values for the systems studied shows the following acceptor trend of tin(IV) in the triorganotin chlorides:p-tolyl > n-butyl > Phenyl > benzylThe influence of the organic moieties on the acceptor property of tin(IV) is discussed..