Self-assembly of triorganotin complexes:: Syntheses, characterization, and crystal structures of dinuclear, 1D polymeric chain, and 2D network polymers containing chiral (+)-(1R,3S)-camphoric acid and meso-cis-4-cyclohexene-1,2-dicarboxylic acid ligands

Eight new chiral triorganotin(IV) complexes, (R3Sn)(2)[C8H14-(COO)(2)] (R = C6H5: 1; PhCH2: 2), {(R3Sn)(2)[C8H14(COO)(2)]}(n) (R = nBu: 3; Me: 4), (R3Sn)(2)[C6H8(COO)(2)] (R = C6H5: 5; PhCH2:6), {(R3Sn)[C6H8(COO)(2)]}(n) (R = nBu: 7), and {(R3Sn)(2)-[C8H14(COO)(2)]}(n) (R = Me: 8) have been synthesized by the reaction of (+)-(1R,3S)-camphoric acid and meso-cis-4-cyclohexene-1,2-dicarboxylic acid with triorganotin(IV) chloride in the presence of sodium ethoxide. All of the complexes were characterized by elemental analysis, FT-IR, NMR (H-1, C-13 and Sn-119) spectroscopy, and TGA. Except for 2, 5, and 6, all of the complexes were also characterized by X-ray crystallography. Complex 1 has a dinuclear structure, and complex 3 has a 1D zigzag chain structure and forms a 3D organotin framework through weak intermolecular 0 center dot center dot center dot Sn interactions. Complex 7 also has a 1D zigzag chain structure in which meso-cis-4-cyclohexene-1,2-dicarboxylic acid acts as a bidentate ligand coordinated to tri-n-butyltin(IV) ions. Complexes 4 and 8 have 2D network structures in which (+)camphoric acid and meso-cis-4-cyclohexene-1,2-dicarboxylic acid act as tetradentate ligands coordinated to trimethyltin(IV) ions. (C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008).