Self-assembly of di- and triorganotin(IV) complexes:: Syntheses, characterization and crystal structures of 1D polymeric chain containing O,O-diethyl or O,O-diisopropyl phosphoric acid ligands

A series of organotin(IV) complexes with O,O-diethyl phosphoric acid ((LH)-H-1) and O,O-diisopropyl phosphoric acid (L2(H)) of the types: [R3Sn center dot L](n) (L = L-1, R = Ph 1, R = PhCH2 2, R = Me 3, R = Bu 4; L = L-2, R = Ph 9, R = PhCH2 10, R= Me 11, R= Bu 12), [R2Cl Sn center dot L](n) (L = L-1, R= Me 5, R= Ph 6, R = PhCH2 7, R= Bu 8; L = L-2, R = Me 13, R = Ph 14, R = PhCH2 15, R = Bu 16), have been synthesized. All complexes were characterized by elemental analysis, TGA, IR and NMR (H-1, C-13, P-31 and Sn-119) spectroscopy analysis. Among them, complexes 1, 2, 3, 5, 8, 9 and 11 have been characterized by X-ray crystallography diffraction analysis. In the crystalline state, the complexes adopt infinite 1D infinite chain structures which are generated by the bidentate bridging phosphonate ligands and the five-coordinated tin centers. (C) 2008 Elsevier B. V. All rights reserved.