Syntheses, Characterization and Crystal Structures of 1D and 2D Organotin Polymers Containing 3-Methyladipic Acid Ligand

Four new organotin (IV) complexes of two types [(R2Sn)(2)(C7H10O4)(mu(3)-O)] (n) (R = Me: 1; nBu: 2; and {(R3Sn)(2)[C5H10(COO)(2)]} (n) (R = Me: 3; nBu: 4) have been synthesized by the reaction of 3-methyladipic acid with the corresponding R3SnCl (R = Me, nBu) under two different experimental conditions. All the complexes were characterized by elemental analysis, FT-IR, and NMR (H-1, C-13, Sn-119) spectroscopy. Except for 2, all of the complexes were also characterized by X-ray crystallography. The structural analyzes show that complex 1 is a 1D infinite chain polymer and forms a 2D organotin framework through intermolecular C-H center dot center dot center dot O interactions and weak Sn center dot center dot center dot O interactions. Complexes 3 and 4 are 2D network polymers in which 3-methyladipic acid acts as a tetra dentate ligand coordinated to the trialkyltin (IV) ion.