Chiral organotin (IV) carboxylates complexes: Syntheses, characterization, and crystal structures with chiral (S)-(+)-6-methoxy- α-methyl-2-naphthaleneaceto acid ligand

Abstract

Eight new organotin (IV) carboxylates, (R 3Sn) 4(nap) 4 (R = Me 1, n-Bu 2), [(R 3Sn) (nap)] n (R = Ph 3, PhCH 2 4), (R 2Sn) (nap) 2 (R = n-Bu 5, Ph 6, PhCH 2 7) and {[R 2Sn(nap)] 2O} 2 (R = Me 8) (nap = (S)-(+)-6-methoxy- α-methyl-2-naphthaleneaceto anion) have been synthesized. All of the complexes have been characterized by elemental analysis, FT–IR, NMR ( 1H, 13C and 119Sn) spectra. Among these complexes, complexes 1, 3, 5 and 8 were also characterized by X-ray crystallography diffraction analysis, and the data of X-ray crystallography diffraction indicated that complexes 1, 3 and 5 are new chiral organotin (IV) carboxylates complexes. The structural analyses show that complex 1 has a tetranuclear Sn 4O 8 macrocycle structure, complex 3 has a 1D spring-like chiral helical chain with a columnar channel, complex 5 possesses a dimer structure, and complex 8 has a supramolecular chainlike ladder structure through weak intermolecular non-covalent O …O interactions.