Organotin(IV) Derivatives of N-Maleoylamino Acids: Their Synthesis and Structural Elucidation

Authors : Moazzam H BHATTI, Saqib ALI, Farhat HUMA

Pages : 463-476

View : 16 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Organotin carboxylates of general formula R3SnL insert ignore into journalissuearticles values(1);, insert ignore into journalissuearticles values(2);, insert ignore into journalissuearticles values(4); and insert ignore into journalissuearticles values(6);, R2SnL2 insert ignore into journalissuearticles values(5); and {[insert ignore into journalissuearticles values(R2SnL);2O]2} insert ignore into journalissuearticles values(3);, where L = N-maleoylglycinate, N-maleoyl-b-alaninate and N-maleoylmethioninate, were prepared. The synthesis of these compounds was achieved by either reaction of organotin halides, R3SnCl, with triethylammonium salt of N-maleoylamino acids or/and organotin oxides, insert ignore into journalissuearticles values(R3Sn);2O and R2SnO, with maleamic acid in the presence of triethyl amine. These compounds were characterized by FT-IR, multinuclear NMR insert ignore into journalissuearticles values(1H, 13C and 119Sn);, mass and 119mSn Mössbauer spectroscopy. The geometry around the tin atom is compared both in solution and in solid state. Different literature methods were employed to calculate the C-Sn-C angle in non-coordinating solvents. The mass fragmentation pattern demonstrated the McLafferty rearrangement in compound insert ignore into journalissuearticles values(6);. Salient features of the X-ray structures for insert ignore into journalissuearticles values(1);, insert ignore into journalissuearticles values(4); and insert ignore into journalissuearticles values(6); are also given.
Keywords : Organotin IV, complexes, N Maleoylamino acids, FT IR, Multinuclear NMR, Mössbauer spectroscopy, Mass spectrometry