Synthesis & characterization of diorgano(chloro)tin(IV) 2-pyridylalkoxides

Abstract

Treatment of [R₂Sn(Cl)(OPrⁱ)] with 2-pyridyl alcohols in refluxing benzene affords white crystalline solids of the type [R₂Sn(Cl){O(CH₂)_nC₅H₄N}] (R = Me, Et, Pⁿ, Buⁿ, or Ph; n = 1 or 2). These complexes have been characterized by elemental analyses and IR, ¹¹⁹Sn Mossbauer and NMR (¹H, ¹³C and ¹¹⁹Sn) data. In chloroform solution these complexes adopt a five-coordinate geometry as revealed by NMR data, but in solid state they appear to have some degree of molecular association.