Synthesis, Spectroscopic Properties and Structural Characterization of Tri(o-chlorobenzyl)tin Ester

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The title complex, tri(o-chlorobenzyl)tin ester of 4-pyridinecarboxylic acid, has been synthesized by the reaction of bis[tri(2-chlorobenzyl)tin] oxide with 4-pyridinyl carboxylic acid and characterized by elemental analysis, IR and 1H NMR, and its crystal structure was determined by X-ray single-crystal diffraction. The crystal belongs to triclinic, space group P21/n with a = 8.821(7), b = 18.888(15), c = 15.333(12) (A), β= 92.390(12)°, Z = 4, V = 2552(3) (A)3, Dc = 1.607 g/cm3, μ = 1.340 mm-1, F(000) = 1232, R = 0.0408 and wR = 0.0962. In the molecular structure of the title complex, the tin atoms are five-coordinated into a trigonal bipyramidal geometry by coordinating to the intermolecular pyridine N atoms of carboxylate groups. The resulting structure is a one-dimensional linear polymer containing Sn-O (2.150(4) (A)) and Sn-N (2.522(4) (A)) bonds.
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