Synthesis and Spectroscopic Investigation on Diorganotin(IV) Complexes with Some Arylazo-2-Pyridine

Abstract

Several diorganotin dichloride complexes of the type R₂SnCl₂.L (R=methyl, phenyl and L=phenylazo-, 3-tolylazo-, 4-tolylazo- and 4-chlorophenylazo-2-pyridine) have been synthesized and characterized. Investigation of the complexes by IR, ¹H NMR, electronic spectral and 119Sn Mössbauer parameters indicated that their structure involved coordination of the pyridine and azo nitrogen to tin atom. ¹¹⁹Sn Mössbauer data (Q.S.=3.37−3.76 mm/sec.) suggest that the complexes are considered to have the two R-groups occupying trans-position in the distorted octahedral structures. Distortion of C-Sn-C bond angle from the linearity have also been calculated using Parish's relationship and lying among 148–155° (R=methyl) and 148–150° (R=phenyl).