Synthesis, Physicochemical and Thermal Analyses of Ru(III), Pt(IV), and Ir(III) Complexes with NO Bidentate Schiff Base Ligand
- Authors: Alosaimi E.H.1, Alsibaai A.A.1, El-Shahawi M.S.1, Refat M.S.2,3
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Affiliations:
- Department of Chemistry, Faculty of Science, King Abdulaziz University
- Department of Chemistry, Faculty of Science, Taif University
- Department of Chemistry, Faculty of Science, Port Said University
- Issue: Vol 92, No 11 (2018)
- Pages: 2227-2236
- Section: Structure of Matter and Quantum Chemistry
- URL: https://journals.rcsi.science/0036-0244/article/view/170207
- DOI: https://doi.org/10.1134/S0036024418110031
- ID: 170207
Cite item
Abstract
The chemical reaction of the 2-[(2,3-dihydroxybenzylidene)amino]benzoic acid (H3L2) Schiff base ligand with Ru(III), Pt(IV) and Ir(III) transition metal ions form the complexes of formula, [Ru(L)(Cl)2(NH3)2(NH4)2] · 2H2O (1), [Pt(L)(Cl)3(NH3)(NH4)2] · H2O (2), and [Ir(L)(Cl)2(NH3)2(NH4)2](3), where L is deprotonated ligand at pH 8–9. The carboxylic acid group is deprotonated and forms ammonium carboxylates at alkaline media. The infrared spectra of the complexes show that Schiff base ligand is present as a NO bidentate chelate through –N atom of azomethine and –O atom of OH phenolic groups. These complexes are of non-electrolyte nature. The electronic spectra and magnetic moments data suggest the coordination number. Thermo gravimetric studies show that ruthenium(III) and platinum(IV) complexes containing hydrated water molecules outside the coordination sphere that are presence on their thermal decomposition in the temperature range 50–100°C. Solid powder diffraction XRD patterns of complexes show isomorphism confirming their similar formulation. Scanning electron microscopy (SEM) micrographs of the complexes samples confirm the surface homogeneity. In the transmission electron microscopy (TEM) pictures these complexes are present as a dark spots with particle size of 50 nm.
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About the authors
Eid H. Alosaimi
Department of Chemistry, Faculty of Science, King Abdulaziz University
Email: msrefat@yahoo.com
Saudi Arabia, Jeddah, P.O. Box 80203
A. A. Alsibaai
Department of Chemistry, Faculty of Science, King Abdulaziz University
Email: msrefat@yahoo.com
Saudi Arabia, Jeddah, P.O. Box 80203
M. S. El-Shahawi
Department of Chemistry, Faculty of Science, King Abdulaziz University
Email: msrefat@yahoo.com
Saudi Arabia, Jeddah, P.O. Box 80203
Moamen S. Refat
Department of Chemistry, Faculty of Science, Taif University; Department of Chemistry, Faculty of Science, Port Said University
Author for correspondence.
Email: msrefat@yahoo.com
Saudi Arabia, Al-Hawiah, Taif, P.O. Box 888, 21974; Port Said