Thermolysis synthesis of pure phase NiO from novel sonochemical synthesized Ni(II) nano metal-organic supramolecular architecture

Younes Hanifehpour; Ali Morsali; Babak Mirtamizdoust; Sang Woo Joo; Behzad Soltani

doi:10.1016/j.ultsonch.2017.02.003

Thermolysis synthesis of pure phase NiO from novel sonochemical synthesized Ni(II) nano metal-organic supramolecular architecture

Ultrason Sonochem. 2017 Jul:37:430-435. doi: 10.1016/j.ultsonch.2017.02.003. Epub 2017 Feb 7.

Authors

Younes Hanifehpour¹, Ali Morsali², Babak Mirtamizdoust³, Sang Woo Joo⁴, Behzad Soltani⁵

Affiliations

¹ School of Mechanical Engineering, Yeungnam University, Gyeongsan 712-749, South Korea.
² Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, P.O. Box 14115-4838, Tehran, Iran. Electronic address: morsali_a@modares.ac.ir.
³ Department of Chemistry, Faculty of Science, University of Qom, PO Box 37185-359, Qom, Iran.
⁴ School of Mechanical Engineering, Yeungnam University, Gyeongsan 712-749, South Korea. Electronic address: swjoo1@gmail.com.
⁵ Department of Chemistry, Faculty of Basic Sciences, Azarbaijan Shahid Madani University, Tabriz, Iran.

PMID: 28427653
DOI: 10.1016/j.ultsonch.2017.02.003

Abstract

Nano-structures of a new supramolecular coordination compound of divalent nickel with the pyrazol (pzH) containing the terminal azide anions, [Ni(pzH)₂(N₃)₂] (1), with discrete molecular architecture (DMA) in solid state was synthesized via sonochemical method. The new nanostructure was characterized by scanning electron microscopy, X-ray powder diffraction, IR, and elemental analysis. Compound 1 was structurally characterized by single crystal X-ray diffraction and the single-crystal X-ray data shows that the coordination number of Ni (II) ions is six, (NiN₆), with four N-donor atoms from neutral "pzH" ligands and two N-donors from two terminal azide anions. The supramolecular features in these complexes are guided and controlled by weak directional intermolecular interactions. The structure of the title complex was optimized by density functional theory calculations. Calculated structural parameters and IR spectra for the title complex are consistent with the crystal structure. The NiO nanoparticles were obtained by thermolysis of 1 at 180°C with oleic acid as a surfactant.

Keywords: Azide; Discrete molecular architecture; Nano coordination compounds; NiO; Nickel.