Sonochemical Synthesis and Structural Characterization of a New Nanostructured Sm(III) Porous Coordination Polymer

A novel three dimensional (3D) micro and nano-structure coordination polymers based on Sm(NO3)3.6H2O prepared by the solvothermal and sonochemical methods. Micro size was prepared by reacting the ligands and metal ions at high temperature in autoclave [1,2]. Nanoparticles of this new coordination polymer were synthesized by ultrasonic assistance at different concentrations. The parameters which were affected on micro to nano-structure conversion such as time and power of irradiation, and concentration of initial reagents were optimized. The effect of these parameters was evaluated on size and morphology of nano-porous structures. The results indicated that by increasing the time of ultrasonic radiation, smaller nano-structure was formed and morphology was changed [3].This porous lanthanide coordination polymer which is shown in Fig.1 was characterized by elemental analysis, FT-IR, scanning electron microscopy (SEM), and single crystal X-ray diffraction analysis. Single-crystal X–ray data show this compound is three-dimensional coordination polymer, and iso-structural which the Ln3+ ion is eight-coordinated and linked by two ligands.