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Omoruyi G. Idemudia

Speaker for catalysis 2017 - Omoruyi G. Idemudia

Title: Tridentate 4-acylpyrazolone thiosemicarbazone and its platinum complex with catalytic properties

Omoruyi G. Idemudia

University of Fort Hare, South Africa


Omoruyi’s research experience in the area of coordination/inorganic chemistry is evident in a total of sixteen research publications. Basically, his research addresses the need for the design of new synthetic compounds with novel properties that are sustainable, which may become potential replacement for less efficient therapeutic agents. Latest on his research work is the syntheses of a series of tridentate azomethines which formed interesting octahedral/tetrahedral metal complexes, with significant antioxidant and catalytic activities. He has been a full time research scientist with the University of Fort Hare since June 2014 shortly after graduating PhD Chemistry. He holds this position till date where he is also a part-time Material Chemistry Lecturer.


The good catalytic properties of imine compounds and their metal complexes, such as shorter reaction times, high yield of synthesis product, reusability, low toxicity as well as an inexpensive and cleaner (green) reactions processes among others, have given them a lot of research attention.  Di-ketone acylpyrazolones have proven to be excellent metal ion chelating agents with analytical and biological importance. They form superior bio-active imine compounds (schiff bases). We have synthesized benzoyl-acylpyrazolones with phenylhydrazine and dinitrophenylhydrazine. Presented herein is the synthesis of a new propyl-acypyrazolone with thiosemicarbazide to obtain 4-propyl-3-methyl-1-phenyl-2-pyrazolin-5-one-thiosemicarbazone which was further reacted with aqueous solution of platinum salt to synthesize its Pt(II) complex. Their structure and composition were ascertained by elemental analysis, FTIR, NMR, ESI-Mass and UV-Vis spectroscopy. X-ray crystallography analysis revealed a keto tautomer form of the schiff base which crystallizes in a triclinic crystal system and the platinum complex with one molecule of the tridentate schiff base coordinated via the ketonic oxygen, thiol sulphur and azomethine nitrogen, alongside a chloride ion to complete its tetrahedral geometry has been proposed. Thermally stable complex was synthesized according to thermogravimetric analysis (TGA). The Platinum complex has shown to possess promising catalytic activities with a 100% conversion rate of styrene in the solvent-free oxidation of styrene and with good reusability potentials.
Audience Take away:

•    Our contributions in the research area of catalysis are the development of new synthetic compounds that can be more efficient sustainable catalyst that will be useful in the laboratory as well as industry.
•    Among other academic/scientific benefits that participants of the meeting will get, our work will give an insight on novel methods that new catalytic compounds are applied. Researchers alike will also have the opportunity of ideas on how their individual research work may/can be improved.