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

摘要

Ten bis(tri-n-buyltin) esters of dicarboxylic acid have been synthesized by the reaction of disodium dicarboxylates with the tri-n-butyltin chloride in 1:2 molar ratio and characterized by elemental analysis, IR, and ~1H NMR. The crystal structures of bis(tri-n-benyltin) ester of succinic acid (2) have been determined by X-ray single crystal diffraction. The crystal belongs to orthorhombic with space group Pccn, a=20.949(3) A, b=17.470(3) A, c=20..45(3) A, alpha=90 deg, beta=90 deg, gamma=90 deg, V=7445.5(19) A~3, Z=8, Dc=1.242 mg/cm~3, mu=1.365 mm~(-1), F(000)=2684, R_1=0.0544, wR_2=0.1417. 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, b and c-axis.