Dr. Ujam Oguejiofo T.

Department: Pure And Industrial Chemistry
Faculty: Physical Sciences
Designation :
Email: oguejiofo.ujam@unn.edu.ng
Phone: +2348062573097


Publications (Articles and Journals):

1. Pius O. Ukoha, Oguejiofo T. Ujam and Johnson F. Iyun and Solomon E. Okereke, Mechanism of the oxidation of L-cysteine by tetraoxoiodate(VII) in aqueous acid medium, Asian Journal of Chemistry, 2015, 27, 3777-3780.

2. Simeon Atiga, Pius O. Ukoha and Oguejiofo T. Ujam, Dynamics of electron transfer reaction of trioxosulfate(IV) ion with dinuclear iron(III)-salen complex in perchloric acid medium, Asian Journal of Chemistry, 2015, 27, 1274-1278.

3. C. A. Nwadinigwe, I. V. Anigbogu and O. T. Ujam, Studies on precipitation performance of n-heptane and n-pentane/n-heptane on C7 and C5/C7 asphaltenes and maltenes from 350 °C atmospheric residuum of three Nigerian light crude, Journal of Petroleum Exploration and Production Technology, DOI 10.1007/s13202-014-0150-x

4. Jonnie N. Asegbeloyin, Oguejiofo T. Ujam, Chizoba M. Ngige, Valentine I. Onwukeme and Tania Groutso, N'-[(1E)-1-(6-methyl-2,4-dioxo-2H-pyran-3(4H)-ylidene) ethyl]benzene sulfonohydrazide, Crystallographica Section E, (2014) E70, o1179.

5. J. N. Asegbeloyin, O. T. Ujam, E. C. Okafor, I. Babahan, C. Poyrazoglu, C. and A. C. Ozmen. Synthesis, Characterization and aiological activity of 2'-[(phenyl)(1-phenyl-3-methyl-5-oxo-4,5-dihydro-1H-pyrazole-4-ylidene)methyl]-1-phenacylhydrazide and its Co(II), Ni(II), Zn(II) and Cu(II) complexes, Bioinorganic Chemistry and Application, 2014, http://dx.doi.org/10.1155/2014/718175

6. Nkechinyere N. Ukwueze, Pius O. Ukoha, Oguejiofo T. Ujam, Jonnie N. Asegbeloyin and Tania Groutso N’-[(1Z)-1-(3-methyl-5-oxo-1-phenyl-1,5-dihydro-4H-pyrazol-4-ylidene) hexyl]benzenesulfonohydrazide, Acta Crystallographica E, 2014, E70, o730.

7. Oguejiofo T. Ujam, Jonnie N. Asegbeloyin, Brian K. Nicholson, Pius O. Ukoha and Nkechi N. Ukwueze, N-(2-Chloroethyl) morpholine-4-carboxamide, Acta Crystallographica Section E, 2014, E70, o463.

8. Simeon Atiga, Pius O. Ukoha, Oguejiofo T. Ujam and Obinna C. Okpareke, Kinetics and mechanism of the reduction of µ-adi-di[N,N'-bis{salicylideneethylenedia minatoiron(III)}] by dithionate ion, Transition Metal Chemistry, 2014, 39,189–194

9. Oguejiofo T. Ujam, Kyle Devey, William Henderson, Brian K. Nicholson, Michael R. Mucalo, Corry Decker and T. S. Andy Hor, Immobilisation of [Pt2(µ-S)2(PPh3)4] on polymeric supports by sulfide alkylation and phosphine exchange reactions, Phosphorus, Sulfur, Silicon and Related Elements, 2013, 188, 1508-1525.

10. Oguejiofo T. Ujam, William Henderson and Brian K. Nicholson, A Zwitterionic mono alkylated derivative of [Pt2(µ-S)2(PPh3)4] from 1,3-Propanesultone. Journal of Structural Chemistry, 2013 54, 523-527.

11. Oguejiofo T. Ujam, Sarah M. Devoy,William Henderson, Brian K. Nicholson and T. S. Andy Hor, A novel ring-expansion reaction of dialkylated derivatives of [Pt2(µ-S)2(PPh3)4] involving Pt-C bond formation, Dalton Transactions, 2012, 41, 12773-12780.

12. Ashwin Gopalan Nair, Oguejiofo T. Ujam, Joseph R. Lane, William Henderson and Brian K. Nicholson, Platinum(II) complexes containing the 3,3-dimethyglutarimidate ligand, Journal of Coordination Chemistry, 2012, 65, 3731-3739.

13. Nikolas D. Kitson, William Henderson, Brian K. Nicholson, and Oguejiofo T. Ujam, Synthesis and characterization of a platinum(II) complex of camphenylphosphonic acid, Journal of Coordination Chemistry, 2011, 64, 3408–3418.

14. Oguejiofo T. Ujam, Sarah M. Devoy, William Henderson, Alistair L. Wilkins, Brian K. Nicholson, E/Z isomerism in monoalkylated derivatives of [Pt2(µ-S)2(PPh3)4] containing 2,4-dinitrophenyl hydrazone substituents, Journal of Coordination Chemistry 2011, 64, 2782-2790. 17 Oguejiofo T. Ujam, William Henderson, Brian K. Nicholson, T. S. Andy Hor. Further studies on the dialkylation chemistry of [Pt2(µ-S)2(PPh3)4], Inorganica Chimica Acta, 2011, 376, 255-263.

15. William Henderson, Brian K. Nicholson, Oguejiofo T. Ujam, Further investigations on the methylation chemistry of [Pt2(µ-S)2(PPh3)4], Journal of Coordination Chemistry, 2011, 64, 2771-2781.

16. Oguejiofo T. Ujam, William Henderson, Brian K. Nicholson, Christopher M. Fitchett, The reactivity of [Pt2(µ-S)2(PPh3)4] towards difunctional chloroacetamide alkylating agents: Formation of cyclized or bridged products, Inorganica Chimica Acta, 2011, 375, 220-227.

17. Pius. O. Ukoha, Jonnie Niyi Asegbeloyin, Chinelo Alioke, Oguejiofo T. Ujam, Kinetics and mechanism of the oxidation of dithionate ion by N,N'-ethylenebis-[salicylideneim inato] iron(III) complex in aqueous perchloric acid medium, Journal of Chemical Society of Nigeria, 2010, 35, 163-170.

18. Oguejiofo T. Ujam, Sarah M. Devoy, William Henderson, Brian K. Nicholson, T. S. Andy Hor, Dinuclear platinum complexes with designer thiolate ligands from the monoalkyl ation of [Pt2(µ-S)2(PPh3)4], Inorganica Chimica Acta, 2010, 363, 3558-3568. 19. Asegbeloyin, J. N., Onyimonyi, A. E., Ujam, O. T., Ukwueze, N. N., Ukoha, P. O., Assessment of toxic trace metals in selected fish species and parts of domestic animals, Pakistan Journal of Nutrition, 2010, 9, 213-215.




https://www.unn.edu.ng/internals/#



More
Area of Specialization
Membership of professional bodies
Research archive
Responsibilities
Working Experience
Biography
Back