Diverse structures, magnetism and photoluminescence of four transition metal coordination compounds based on the semirigid 4-(pyridin-3-yloxy)-phthalic acid
Abstract
<div><p>Four transition metal coordination compounds, {[Co(PPDA)(H<sub>2</sub>O)<sub>2</sub>]}<sub>n</sub> (<b>1</b>), {[Ni(HPPDA)<sub>2</sub>]}<sub>n</sub> (<b>2</b>), {[Cd(PPDA)(H<sub>2</sub>O)]∙H<sub>2</sub>O}<sub>n</sub> (<b>3</b>) and {Zn(HPPDA)<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub>}<sub>n</sub> (<b>4</b>), were synthesized by assembling transition metal salts with a semirigid ligand 4-(pyridin-3-yloxy)-phthalic acid (H<sub>2</sub>PPDA) under hydrothermal conditions. The compounds have been characterized by elemental analyses, IR spectra, TGA, powder X-ray diffraction (PXRD) and single crystal X-ray crystallography. Compound <b>1</b> exhibits a 3-connected 2-D layered structure, <b>2</b> shows a (3,6)-connected 2-D layered structure, <b>3</b> displays a (3,6)-connected 2-D layered framework based on binuclear units, and <b>4</b> is a mononuclear structure, connected to generate a 3-D supramolecular architecture by hydrogen bonds. Compound <b>2</b> is thermally stable up to 300 °C. The magnetic properties of <b>1</b> and photoluminescent properties of <b>3</b> and <b>4</b> have been explored.</p></divSimilar works
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