Synthesis of bis(tri-<i>n</i>-butyltin) esters of dicarboxylic acid and crystal structure of the three-dimensional framework of organotin polymer, bis(tri-<i>n</i>-butyltin) ester of succinic acid

Abstract

Ten bis(tri-<i>n</i>-buyltin) esters of dicarboxylic acid have been synthesized by the reaction of disodium dicarboxylates with the tri-<i>n</i>-butyltin chloride in 1:2 molar ratio and characterized by elemental analysis, IR, and ¹H NMR. The crystal structures of bis(tri-<i>n</i>-benyltin) ester of succinic acid (<b>2</b>) have been determined by X-ray single crystal diffraction. The crystal belongs to orthorhombic with space group Pccn, <i>a </i>=20.949(3)Å, <i>b=</i>17.470(3)<i> </i>Å, <i>c=</i>20.345(3)<i> </i>Å, <i>α</i> = 90°, β=90°, γ=90°, V=7445.5(19) ų, Z=8, <i>Dc=</i>1.242<i> </i>mg/cm³, μ=1.365 mm^-l, F(000)=2864, <i>R</i>₁=0.0544, <i>wR</i>₂<i>=</i>0.1417<i>. </i>The tin atom is five coordinate in a trigonal bipyramidal structure by bridging two carboxylate groups in different directions. The resulting structure is a three-dimensional framework polymer containing two different tin atom. The framework structure contains large ring directed channels along a, band c-axis.