Dr. Changamu Evans Ogwagwa

 

Department of Chemistry
P.O. Box 43844, -00100,
E-Mail: This email address is being protected from spambots. You need JavaScript enabled to view it. or This email address is being protected from spambots. You need JavaScript enabled to view it.
Tel: +254-735659704
NAIROBI



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Publications

  1. Lewis Whitehead, BrigittaTadmor, Nina Dudnik, Evans OgwagwaChangamu, Heather Burks, Chris Harwell, Jeffry D Madura, Solomon Derese, John Liebeschuetz, Anne Rutland, Sean Ohlinger, Juliette Pradon, Linda Wang, Lucy Kiruri;Seed, foster, believe, dream and act: Capacity building in Kenya, Novartis' Global DiscoveryChemistry, and the International Activities Committee contributions, 2010-2014, & beyond. ACS Books; Book Chapter accepted for publication 2015
  2.   Lewis Whitehead, BrigittaTadmor, Nina Dudnik, Evans OgwagwaChangamu, Heather Burks, Chris Harwell, Jeffry D Madura, Solomon Derese,      John Liebeschuetz, Anne Rutland, Sean Ohlinger, Juliette Pradon, Linda Wang, Lucy Kiruri;Seed, foster, believe, dream and act: Capacity                 building in Kenya, Novartis' Global DiscoveryChemistry, and the International Activities Committee contributions, 2010-2014, & beyond. ACS            Books; Book Chapter accepted for publication 2015
  3. Cyprian M. M’thiruaine, Holger B. Friedrich, Bernard Omondi, Evans O. Changamu, A Structural Investigation of the D2O Solvated, Acetone Solvated and Non-solvated 1,4-Diazabicyclo[2.2.2] octane Complexes of the Half Sandwich Moiety [(5-C5H5)(CO)2Fe]. S. Afr. J. Chem., 66 (2013), 237 – 243
  4. Evans O Changamu, Holger B. Friedrich, Manuel A. Fernandes (2009), A structural investigation of the heterobimetallic carbocation complex [Cp*(CO)2Fe{?-CH2CH(CH2)3}W(CO)3Cp]BPh4 Inorg. Chim. Acta Accepted for publication
  5. Evans O. Changamu, Holger B. Friedrich and Melanie Rademeyer (2008), Synthesis and structure of the monometallic cationic complex [Cp(CO)2Fe{?2-(CH2CHCH2CH3)}]PF6 (Cp = ?5-C5H5) J. Organomet. Chem. 693, 164 - 168
  6. Evans O. Changamu, Holger B. Friedrich R. Alan Howie and Melanie Rademeyer (2007), A structural investigation of the carbocation complex [{Cp*(CO)2Fe}2{?-(C3H5)}]PF6 J. Organomet. Chem. 692, 5091 – 5096
  7. Evans O. Changamu, Holger B. Friedrich, and Melanie Rademeyer (2006), [?-1?C1:2(C2,C3-?)-Allyl]tetracarbonyl-1?2C,2?2C-(1?5-cyclopentadienyl )(2?5-pentamethylcyclopentadienyl)diiron (II) hexafluorophosphate, Acta Cryst. E62, m442-m444.
  8. Evans O. Changamu, Holger B. Friedrich, and Melanie Rademeyer, (2007) Synthesis and characterization of transition metal-stabilized carbocations of the types [Cp*(CO)2Fe{?-(CnH2n-1)}M(CO)xCp]PF6 (x = 2, M = Fe or Ru; x = 3, M = W; Cp* = ?5-C5(CH3)5; Cp = ?5-C5H5; n = 3 - 6) and [Cp(CO)2Ru{?-(CnH2n-1)}W(CO)3Cp]PF6 (n = 3 – 5) and the crystal structures of the complexes [Cp*(CO)2Fe(CH2)3Ru(CO)2Cp], [Cp*(CO)2Fe(CH2)5Ru(CO)2Cp], [Cp*(CO)2Fe(CH2)5W(CO)3Cp], and [Cp(CO)2Ru(CH2)5W(CO)3Cp], J. Organomet. Chem. 692, 2456-2472.
  9. Evans O. Changamu and Holger B. Friedrich (2007), A study of ?-hydride abstraction from alkanediyl homobimetallic complexes [{Cp(CO)2Fe}2{?-(CnH2n)}] (n = 4 -10, Cp = ?5-C5H5), J. Organomet. Chem. 692, 1138-1149.

Conferences

  1.  Biblical Stewardship workshop – Breaking unhealthy Dependence, held at the Deliverance Church KahawaSukari, on 19th -28th January 2015. 
  2. Teaching Methodology training held at Kenyatta University between 28th May and 14th November 2013.
  3. First Kenyatta University workshop on mathematical modelling held at Kenyatta University, Nairobi, Kenya, on 17 – 21st June 2013.
  4. Oral presentation titled “Synthesis and characterization of some transition metal-stabilised carbocations” Evans O. Changamu, Holger B. Friedrich and Melanie Rademeyer, presented at the South African Chemical Institute conference on Inorganic Chemistry (Inorg. 007), at Club Mykonos, West Coast (Cape Town), July 2007.
  5. Oral presentation titled “Transition metal-stabilized carbenium ions: Single vs double hydride abstraction”, Evans O. Changamu , Holger B. Friedrich, presented at the 38th National convention of the South African Chemical Institute, Durban, December, 2006.
  6. Oral presentation titled “Transition Metal Stabilized Carbenium Ions” Evans. O. Changamu and Holger B. Friedrich, presented at the 5th International Kenya Chemical Society Conference, Nairobi Kenya, August 2005.
  7. Oral presentation titled “A study of the reactions of tetrabromooctacarbonyldi-molybdenum (II) complex with 1,2-ethanediylbis(diphenyl)phosphine” Evans C. Ogwagwa and Naftali Muriithi at the Annual Kenya Chemical Society Conference, Nairobi Kenya, July 1998.
  8. Poster titled “Synthesis And Structure Of The Cationic Heterobimetallic Complex [Cp*(CO)2Fe{?2-CH2CH(CH2)3}W(CO)3Cp]BPh4 (Cp* = ?5-C5(CH3)5; Cp = ?5-C5H5)”Evans O. Changamu, and Holger B. Friedrich presented during the 38th International Conferences on Coordination Chemistry at Renaissance Hotel, Jerusalem (Israel), July 20 - 25, 2008.
  9. Poster titled “?-Hydride abstraction from alkanediyl homobimetallic complexes [{Cp(CO)2Fe}2{?-(CnH2n)}] (n= 4 -10, Cp=?5-C5H5): Single versus double hydride abstraction”, Evans O. Changamu, Holger B. Friedrich; presented at the Organometallics and Their Applications (OATA) symposium at Breakwater Lodge, Cape Town in August 2006.

List of M.Sc./Ph.D. students currently being supervised by myself

PhD Students
1. Mariah Onditi, Reg. No. 184/21921/2012
Title:Extraction and Characterization of hemicellulose from the common cactus plant, OpuntiaficusIndica, for use in removal of bacteria and heavy metals from water

Status: Data collection with my collaborator at University of Johannesburg

2. MakhanuMaximillaMutenyo, Reg. No. I84/13676/09
Title: An alternative method of preparing diammonium phosphate fertilizer for greenhouse tomato production
Status:Data collection

3. Echessa A.C. Peter, Reg. No. I84/25745/2011
Title: Formulation and evaluation of an NPK supplementary fertilizer from sisal (Agave sisalana) and livestock wastes
Status: Data collection

4. Katana Chengo, Reg. No. I84/27490/2014
Title: Synthesis, characterization and DFT studies of selected amine complexes of the half sandwich Lewis acids [η5-C5R5(CO)2M] (R=H or CH3)
Status: Proposal stage

MSc Students
1. Samuel KirkokKipyegon, Reg. No. I56/CE/22221/2010
Title:Characterization of honey produced by Apismelliferaand Melipona bees in Marigat and east Pokot regions of Baringo county- Kenya
Status: Submitted Thesis for examination

2. Nyakung’u Walter Nyabiage,Reg No. I56/26234/2011
Title:Density functional theory studies on structural properties and energies structural analogues of isoniazid
Status:Submittedthesis for examination

3. LusambiliStanslausManyengo, Reg. No. I56/24068/2012
Title:Physico-chemical characterization of raw clays used in making in Kakamegacounty
Status: About to submit thesis for examination

4. Aquiline KathambiMuthuri, Reg. No. I56/CE/14212/09
Title:Synthesis and characterization of cobalt (ii) complexes of chelating ligands
Status: About to submit thesis for examination

5. PriscaOboiko, Reg. No. I56/CE/22824/2011
Title:Density Functional theory studies of structural properties and energies of analogues of pyrazinamide
Status:Writing Thesis

6. Andrew CheruiyotKemoi, Reg. No. 156/CE/22768/2010
Title: Recovery of iron from laterites and use of the residue as a source of magnesium-free portland cement
Status:Writing Thesis

7. William KailoMunyoki, Reg. No.I56/CE/22237/2010
Title: Assessment of adulteration and impurities of illicit heroin seized in Nairobi Kenya
Status:Writing Thesis

8. Kennedy MburuWanjiru, Reg. No.I56/22223/2010
Title:Synthesis, characterization and screening selected amine complexes of the organometallic moiety [(η5-C5H5)(CO)(PPh3)Fe] for antibacterial activity
Status:Data collection

9. Anyona Geoffrey Nyagaka,Reg. No. I56/CE/23528/2011
Title:Evaluation of aflatoxin levels in eggs, milk, layer chicken and dairy cow feeds sold in Kajiadocounty, Kenya
Status:Data collection

10. Getuno Dorothy Nyasuguta, Reg. No. I56/CE/26246/2011
Title:Decontamination of water using bagasse, its charcoal and ash
Status:Data collection

11. Gloria JerutoKimaiyo,Reg. No.I56/CE/21033/2012
Title:Development of novel nano-bioadsorbents for water purification
Status:In the Lab

12. Sharon Chepngeno,Reg. No.I56/CE/26248/2011
Title:conditions for activation of charcoal derived from bagasse for optimum adsorption of Lead and Cadmium ions
Status: Proposal stage

13. HellenW. Guchuhi, Reg. No. I56/CE/23972/2011
Title:Synthesis and characterization of selected amino acid complexes of the organometallic fragment [(5-C5R5)(CO)2Fe] (R = H OR CH3)
Status:Proposal stage


14. Juma Michael Ouma, Reg. No I56/20056/2012
Title:Density functional theory studies on the molecular, structural properties energies of ethambutol derivatives
Status:Proposal stage

15. MukaiMunyasia, Reg. No. I56/CE/22609/2011
Title:Synthesis, characterization and bioactivity evaluation of the organometallic complexes [5-C5H5 (CO) (PPh3)Fe (L)] (L = N-heterocyclic ligand) as possible remedies for tuberculosis
Status:Proposal stage


16. Albert Mosiria, Reg. No. I56/15432/2009
Title: DFT Studies on the adsorption and degradation mechanism of methyl parathion on iron oxide in soil
Status:Proposal stage

17. MaubiAuka Joseph, Reg. No. I56/CE/20175/2012
Title: Quantification of antimony and selected organic compounds in drinking water treated using sodis method in polyethylene teraphtalate bottles
Status:Proposal

18. Godfrey AlieloLumula,Reg. No.I56/CE/11219/2007
Title:Analysis of potassium and molybdenum levels in soils in KakamegaSouth sub county for subsistence farming
Status: Proposal Stage

Last Updated on Thursday, 26 March 2015 07:45

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