Synthesis and Structural Studies by Infrared, ¹H NMR and ¹¹⁹Sn Mossbauer Spectroscopy of Diorganotin(IV) Diperchlorate Complexes with Heterocyclic Bases. Part II

Abstract

Diorganotin(IV) diperchlorate complexes of heterocyclic ligands of the composition (R₂SnL_n)(C10₄)₂ with L = pyridine, quinoline, 2,2′-bipyridine and 1,10-phenanthroline, have been prepared and characterized by molar conductance measurements and IR, ¹H NMR and ¹¹⁹Sn Mössbauer spectroscopic studies. The complexes with two monodentate ligands are reported as tetrahedral while the complexes with four monodentate or two-bidentate ligands as distorted octahedral structures where the R₂Sn group occupying a trans-position. Distortion of the C-Sn-cbond angle from linearity has been calculated. Its value lies between 146–162° (R = methyl) and 145° (R = phenyl).