Synthesis and characterization of a novel spring-like organotin complex containing guest benzene molecules

A novel spring-like organotin complex [(Ph3Sn)(C7H5ClNO2)]n·3C6H6 (1), has been synthesized by treatment of 6-chloro-3-pyridineacetic acid bis(triphenyltin)oxide on the condition of reflux. The complex was characterized by elemental analysis, FT-IR, NMR (1H, 13C and 119Sn) spectroscopy, and X-ray crystallography diffraction analysis. The structure analyses reveals that complex 1 is an 1D infinite chain linked by intermolecular Sn–O bonds, in which the guest benzene molecules are established in the cavity of this helical chain; all the tin atoms of complex 1 are five-coordinated.