Dr. Nyamato G. Simba Publications

Publications in Journals:

1. Jayamani, A; Nyamato, S. G; Ojwach, S. O. Ethylene oligomerization reactions catalyzed by homogeneous and silica immobilized NˆO Fe(II) and Co(II) complexes. Journal of Organometallic Chemistry 2019, 903 120987. https://doi.org/10.1016/j.jorganchem.2019.120987
2. Ngcobo, M; Nyamato, G. S.; Ojwach, S. O.; (2019). Structural elucidation of N^O (ethylimino-methyl)phenol Fe(II) and Co(II) complexes and their applications in ethylene oligomerization catalysis. Molecular Catalysis, Volume 478, 2019, 110590, ISSN 2468-8231, https://doi.org/10.1016/j.mcat.2019.110590.
3. Magubane, M. N.; Nyamato, G. S.; Ojwach, S. O.; Munro, O. Q. Structural, kinetic, and DFT studies of the transfer hydrogenation of ketones mediated by (pyrazole)pyridine iron(II) and nickel(II) complexes. RSC Adv., 2016, 6, 65205–65221.
4. Nyamato, G. S.; Ojwach, S. O.; Akerman, M. P. Ethylene oligomerization studies by nickel(II) complexes chelated by (amino)pyridine ligands: experimental and density functional theory studies. Dalton Trans., 2016, 45, 3407-3416.
5. Nyamato, G. S.; Alam, M. G., Ojwach, S. O.; Akerman, M. P. Nickel(II) complexes bearing pyrazolylpyridines: synthesis, structures and ethylene oligomerization reactions. Appl. Organometal. Chem., 2016, 30, 89-94.
6. Nyamato, G. S.; Ojwach, S. O.; Akerman, M. P. Potential hemilabile (imino)pyridine palladium(II) complexes as selective ethylene dimerization catalysts: An experimental and theoretical approach. Organometallics 2015, 34, 5647-5657.
7. Nyamato, G. S.; Alam, M. G.; Ojwach, S. O.; Akerman, M. P. (Pyrazolyl)-(phosphinoyl)pyridine iron(II), cobalt(II) and nickel(II) complexes: Synthesis, characterization and ethylene oligomerization studies. Journal of Organometallic Chemistry 2015, 783, 64-72.
8. Nyamato, G. S.; Ojwach, S. O.; Akerman, M. P. Unsymmetrical (pyrazolylmethyl)-pyridine metal complexes as catalysts for ethylene oligomerization reactions: Role of solvent and co-catalyst in product distribution. Journal of Molecular Catalysis A: Chemical 2014, 394, 274–282.
9. Nyamato, G. S.; Ojwach, S. O.; Akerman, M. P. Packing forces in dichloridobis(3,5-diphenyl-1H-pyrazole-kN2)cobalt(II) dichloromethane hemisolvate. Acta Cryst. 2014, C70, 780-783.
10. Njoroge, M. W.; Ojwach, S. O.; Nyamato, G. S.; Omondi, B.; Darkwa, J. Coordination behavior and binding properties of (3,5-dimethyl-1H-pyrazol-1-yl)ethanol with Cu(II), Zn(II), Cd(II), and Pb(II) metals. Journal of Coordination Chemistry 2013, 66:9, 1626-1634.
11. Ojwach, S. O.; Nyamato, G. S.; Omondi, B.; Darkwa, J.; Okoth, A. O. Multidentatebis(pyrazolylmethyl)pyridine ligands: coordination chemistry and binding properties with zinc(II) and cadmium(II) cations. Journal of Coordination Chemistry 2012, 65:2, 298-307.
12. Ojwach, S. O.; Nyamato, G. S.; Omondi, B.; Darkwa, J.; Okoth, A. O.  Chelating (pyrazolylmethyl)pyridine ligands: Coordination chemistry and binding properties with zinc(II) and cadmium(II) cations.  Inorganica Chimica Acta 2012, 392, 141–147.

Presentation of Papers at Academic and Professional Conferences

1. George S. Nyamato and Stephen O. Ojwach, 43rd SACI National Convention 2018, CSIR-ICC in Pretoria, South Africa, 2nd - 7th December 2018, Ethylene oligomerization studies by nickel(II) complexes chelated by (amino)pyridine ligands.
2. George S. Nyamato, Stephen O. Ojwach and Matthew P. Akerman,  9th International KCS conference, United States International University-Africa, Nairobi, 9th May -12th May 2017, Iminopyridine Palladium(II) Complexes: Synthesis, Characterization, DFT Studies and Precursors for Ethylene Oligomerization.
3. George S. Nyamato, Stephen O. Ojwach and Matthew P. Akerman,  SACI INORG 2015, Rhodes University, South Africa, 28th June -2nd July 2015, (Imino)pyridine palladium(II) complexes: Experimental, theoretical studies and as ethylene oligomerization catalysts.