title: Influences of temperature, power ultrasound and reaction time on the morphological properties of two new mercury(II) coordination supramolecular compounds.
abstract: Nanoparticles of two new coordination compounds, [Hg2(L)2(Br)4]n(1) and [Hg(L')(SCN)2] (2), (L=2-amino-4-methylpyridine, L'=2,6-pyridinedicarboxlic acid), have been synthesized by use of a sonochemical process and characterized by scanning electron microscopy (SEM), field emission scanning electron microscopy(FESEM), X-ray powder diffraction (XRPD), Fourier transform infrared spectroscopy (FTIR) spectroscopy and elemental analyses. The single crystal X-ray data of compounds 1 and 2 imply that the Hg(II) ions are four and five coordinated, respectively. Topological analysis shows that 1D and 0D coordination networks of 1 and 2 can be classified as underlying nets of topological types 2C1 and 1,3M4-1, respectively. The thermal stability of compounds has been studied by thermal gravimetric (TG) and differential thermal analyses (DTA). The role of temperature, reaction time and ultrasound irradiation power on the size and morphology of "nano-structures" 1 and 2, has been investigated. Results claim that an increase of temperature, sonication power and decrease in reaction time leads to a decrease of particle size.
authors: Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, Zahedan P.O. Box 98135-674, Iran.
authors: Payam
authors: P
authors: Hayati
authors: Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, Zahedan P.O. Box 98135-674, Iran.
authors: Ali Reza
authors: AR
authors: Rezvani
authors: Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, P.O. Box 14115-4838, Tehran, Islamic Republic of Iran. Electronic address: morsali_a@modares.ac.ir.
authors: Ali
authors: A
authors: Morsali
authors: Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198 Gif-sur-Yvette, France.
authors: Pascal
authors: P
authors: Retailleau
authors: Departamento de Química Física y Analítica, Universidad de Oviedo, 33006 Oviedo-CINN, Spain.
authors: S
authors: S
authors: García-Granda
keywords: Coordination supramolecular; Morphology; Sonochemical process; Topology; Ultrasound irradiation