Journal Information
Research Areas
Publication Ethics and Malpractice Statement
To Scholarlink Resource Center
Guidelines for Authors
For Authors
Instructions to Authors
Copyright forms
Submit Manuscript
Call for papers
Guidelines for Reviewers
For Reviewers
Review Forms
Contacts and Support
Support and Contact
List of Issues
Indexing

 

Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS)

ISSN:2141-7016

Article Title: Synthesis and Characterization of P-Nitrobenzoylpyrazolone-5 and Its Complexes of Manganese (II), Iron (III), Rhodium (III), Tungsten (VI) and Uranium (VI)
by Arinze, J.C., Daniel, N.E. and Ogwuegbu, M.O.C

Abstract:
The present study is aimed at the preparation of 1-phenyl-3-methyl-4-(p-nitrobenzoyl)-5-pyrazolone (HNPZ) by the benzoylation of 1-phenyl-3-methyl-5-pyrazolone (HPMP) with p-nitrobenzoyl chloride, the preparation of metal complexes of HNPZ with manganese (II), iron (III), rhodium (III), tungsten (VI) and uranium (VI) ions, the investigation of the modes of interaction between the metals and the ligand (HNPZ) in aqueous media using spectroscopic methods, the investigation of the structures and compositions of the metal complexes using elemental analysis, UV-visible and infrared spectroscopies. The study suggests that the ligand and metal ions formed neutral complexes of the general formular M(NPZ)nX (M = metal ion, NPZ = ligand anion, X = H2O Molecule, n = the number of ligand molecules that complexed to M). Mn (II) formed dihydrate bischelate, Mn(NPZ)2?2H2O; Fe (III) and Rh (III) formed anhydrous trischelates, M(NPZ)3, while W (VI) and U (VI) formed dioxo aquobischelates of the type, MO2(NPZ)2H2O. The study also showed the formation of neutral octahedral complexes of Mn (II), Fe (III) and Rh (III), and pentagonal bipyramidal complexes of W (VI) and U (VI) with the HNPZ anion
Keywords: extraction, solvent, complexes, pyrazolones, ligands, metal ions
Download full paper

ISSN: 2141-7016

Editor in Chief.

Prof. Gui Yun Tian
Professor of Sensor Technologies
School of Electrical, Electronic and Computer Engineering
University of Newcastle
United Kingdom

 

 

Copyright © Journal of Emerging Trends in Engineering and Applied Sciences 2010