Syntheses, characterizations and crystal structures of triorganotin(IV) derivatives with 2-mercapto-4-quinazolinone

Abstract

The triorganotin(IV) derivatives of 2-mercapto-4-quinazolinone (HSqualone) of the type, R 3SnL (R = Ph 1, CH 3 2, PhCH 2 3, p-F-PhCH 2 4, o-F-PhCH 2 5, n-Bu 6), were obtained by the reaction of the R 3SnCl and HSqualone with 1:1 molar ratio in benzene. All complexes 1– 6 were characterized by elemental analyses, IR, 1H and 13C NMR spectroscopy and the crystal structures of complexes 1– 3 were also confirmed by X–ray crystallography. The structure analyses reveal that the tin atoms of complexes 1– 3 are all distorted tetrahedral geometries. Furthermore, the dimeric structures in complexes 1– 3 have also been found linked by intermolecular O–H⋯N or N–H⋯O hydrogen bonding interaction. Interestingly, the dimers of complexes 2 and 3 are further linked into one-dimensional chain through intermolecular C–H⋯S and C–H⋯O weak hydrogen bonding interactions, respectively.