Investigating the Impact of Ultrasonic Irradiation Power, Concentrations of Reactant, and Reaction Period on Morphology of Novel Nano Hg(II) Metal–Organic Coordination Polymer

Abstract

In the present work, using sonochemical method, novel mercury (II) metal–organic supramolecule with nano-rods shape, [Hg(1,10-phen)Cl2]n (1) (1,10-then = 1,10-phenanthroline) was prepared. The impact of the synthesis elements including duration, irradiation power, and concentrations was investigated and enhanced. Nano rods and nano flowers morphologies were obtained by applying diverse sonication time, power and concentration. The samples were categorized via IR spectroscopy, scanning electron microscopy, single crystal X-ray analysis, elemental analysis, X-ray photoelectron spectroscopy and X-ray powder diffraction. Based on the X-ray structure analysis, it was observed that two nitrogen atoms of the “1,10-phen” ligand and four chloride bridging atoms with symmetrical octahedral geometry and a HgN2Cl4 donor set coordinate the Hg(II) atom. A one-dimensional zig-zag polymer is created by the crystal forms. The nearby chains attached to π–π of nearby aromatic circles of “1,10-phen” and other weak interactions. Hence, as a result of the weak interactions, it is possible for the 1D zig-zag arrangement to create a three dimensional metal–organic coordination polymer. Through thermolyzing the compound 1 with oleic acid as a surfactant at the temperature of 180 °C, HgO nanoparticles were obtained. Using SEM, the as-synthesized HgO nanoparticles were further tested in terms of the morphology and size.