Synthesis and characterization of bis(carboxylato)zinc(II) (C-6-C-8) - Crystal structure of bis(hexanoato)zinc(II), Zn(O2CC5H11)(2) - Form A

Different synthetic routes were used for the preparation of zinc( II) alkyl carboxylates with 6 - 8 carbon atoms. Isolated products were characterised by standard physicochemical methods. Powder diffraction patterns, IR spect ra, DTA curves and C-13 solid state NMR spectra indicate presence of two di fferent polymorphic forms in the case of hexanoate and heptanoate. No fungi cidal activity of isolated compounds was observed. Crystal structure of Zn( O2CC5H11)(2) - form A was determined by X-ray sing le-crystal method. Each Zn atom is coordinated tetrahedrally by oxygen atom s of four different hexanoate ligands while each hexanoate ligand is bridgi ng two tetrahedral zincs in syn-anti mode thus forming a typical layered st ructure.