Reuben H. Simoyi, Center for Nonlinear Science, Portland State University


Publications

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    • "Oxyhalogen-Sulfur Chemistry: Kinetics and Mechanism of the Oxidation of Cysteamine by Acidified Iodate and Iodine" Canadian Journal of Chemistry; 2006; 84(1); 49 -57.  With Chikwana, E.; Chanakira, A.; Peyton, D.

     

     

    • "Formation and Stability of a Nitric Oxide Donor: S-Nitroso-N-acetylpenicillamine" J. Phys. Chem. B.; 2006; 110(10); 5052-5061. With
      Chipinda, I.
       
    • "Oxyhalogen-Sulfur Chemistry: Kinetics and Mechanism of Oxidation of N-Acetylthiourea by Chlorite and Chlorine Dioxide" J. Phys. Chem. A.; 2006; 110(7); 2396-2410. With Olagunju, O.; Siegel, P. D.; Olojo, R.
       
    • "S-Oxygenation of Thiocarbamides II: Oxidation of Trimethylthiourea by Chlorite and Chlorine Dioxide" J. Phys. Chem. A.; 2005; 109(6); 1094-1104. With Chigwada, T. R.
       
    • "S-Oxygenation of Thiocarbamides I: Oxidation of Phenylthiourea by Chlorite in Acidic Media" J. Phys. Chem. A.; 2005; 109(6); 1081-1093. With Chigwada, T. R.; Chikwana, E.
       
    • "Oxidation of a Dimethylthiourea Metabolite by Iodine and Acidified Iodate: N,N'-Dimethylaminoiminomethanesulfinic Acid" Chem. Res. Toxicol.; 2005; 18(7); 1167-1177. With Otoikhian, A.; Petersen, J. L.
       
    • "Oxyhalogen-Sulfur Chemistry: Kinetics and Mechanism of Oxidation of Guanylthiourea by Acidified Bromate" J. Phys. Chem. A.; 2004; 108(52); 11591-11599. With Chikwana, E.; Otoikhian, A.
       
    • "Antioxidant Chemistry: Oxidation of L-Cysteine and Its Metabolites by Chlorite and Chlorine Dioxide"  J. Phys. Chem. A.; 2004; 108(26); 5576-5587. With Darkwa, J.; Olojo, R.; Chikwana, E.                                                                                                                                    .
    • "Oxyhalogen-Sulfur Chemistry: Nonlinear Oxidation Kinetics of Hydroxymethanesulfinic Acid by Acidic Iodate " J. Phys. Chem. A.; 2004; 108(13); 2457-2463. With Ojo, J. F.; Otoikhian, A.; Olojo, R.
       
    • "Oxyhalogen-Sulfur Chemistry: Kinetics and Mechanism of Oxidation of Amidinothiourea by Acidified Iodate"J. Phys. Chem. A.; 2004; 108(6); 1024-1032. With Chikwana, E.
    • "Oxyhalogen-Sulfur Chemistry: Kinetics and Mechanism of the Oxidation of Thionicotinamide by Peracetic Acid"J. Phys. Chem. A. 2004, 108(6); 1018-1023. With Olojo, R.                                                                                                                                                                .
    • "Oxyhalogen–sulfur chemistry: kinetics and mechanism of oxidation of formamidine disulfide by acidic bromate" Physical Chemistry Chemical Physics, 2003, 5, 4149 - 4156.  With Madhiri, N.; Olojo, R.
       

     

    • "Oxyhalogen-Sulfur Chemistry: Oxidation of N-Acetylcysteine by Chlorite and Acidic Bromate" J. Phys. Chem. A.; 2003; 107(46); 9834-9845. With Darkwa, J.; Olojo, R.; Olagunju, O.; Otoikhian, A.
       
    • "Pattern Formation Fueled by Dissipation of Chemical Energy: Conclusive Evidence for the Formation of a Convective Torus" J. Phys. Chem. A.; 2002; 106(3); 482-489. With Martincigh, B. S.
       
    • "A Possible Mechanism for Thiourea-Based Toxicities: Kinetics and Mechanism of Decomposition of Thiourea Dioxides in Alkaline Solutions"
      J. Phys. Chem. B.; 2001; 105(50); 12634-12643. With Svarovsky, S. A.; Makarov, S. V.
       
    • "Oxyhalogen-Sulfur Chemistry: Kinetics and Mechanism of the Formation Of Bromamines from the Reaction between Acidic Bromate and Aminomethanesulfonic Acid" J. Phys. Chem. B.; 1998; 102(51); 10490-10497. With Chinake, C. R.
       
    • "New and Surprising Experimental Results from the Oxidation of Sulfinic and Sulfonic Acids" J. Phys. Chem. A.; 1998; 102(34); 6786-6792. With Makarov, S. V.; Mundoma, C.; Penn, J. H.; Svarovsky, S. A.
       
    • "Self-Organization with Travelling Waves: A case for a Convective torus" Phys. Rev. E 1997, 55, 7299.  with Martincigh, B. S.; Chinake, C. R.; Howes, T.                                                                                                                                                                                                 
    • "Experimental Studies of Spatial Patterns Produced by Diffusion-Convection-Reaction Systems" J. Chem. Soc. Faraday Transactions 1997, 93(7), 1345-1350.  with Chinake, C. R.
    • "Oxyhalogen-Sulfur Chemistry: Oxidation Of 2-Aminoethanethiolsulfuric acid by Iodate in Acidic Medium" J. Chem. Soc. Faraday Transactions 1997, 93(8), 1543-1549.  with Mundoma, C.
    • "Oxyhalogen-Sulfur Chemistry: Oxidation of Taurine by Chlorite in Acidic Medium" J. Phys. Chem. B 1997, 101, 1207.  With Chinake, C.R.
    • "Oxyhalogen-Sulfur Chemistry: Nonlinear Oxidation of AETSA by Bromate in Acidic Medium", J. Chem. Soc. Faraday Transactions 1996, 92, 4407.   with Darkwa, J. and Mundoma, C.
    • "Oxyhalogen - Sulfur Chemistry: Bromate Oxidation of 1-Methyl-2-Thiourea in Acidic Medium", J. Phys. Chem. 1996, 100, 13521.  With Jonnalagadda, S.B. and Chinake, C.R.
    • "Formation of Thermal Plumes in an Autocatalytic Exothermic Chemical Reaction", Phys. Rev. E., 1995, 52, 6146.  with Hauser, M.J.; Martincigh, B.S.
    • "Kinetics and Mechanism of the Complex Bromate-Iodine Reaction" J. Phys. Chem. 1996, 100, 1643. with Chinake, C.R.
    • "Kinetics and Mechanism of Reaction Between Thymol Blue and Bromate in Acidic Medium" J. Chem. Soc. Faraday Trans. 1995, 91(11), 1635. with Jonnalagadda, S.B.; Chinake, C.R.
    • "Identification and Kinetic Study of the Peroxymalonic Radical in the Aerobic Oxidation of Malonic Acid by Cerium(IV)" J. Am. Chem. Soc.1995, 117, 6372.  with Neumann, B.; Muller, S.; Steinbock, O.; Dalal, N.
    • "Convective Instabilities Induced by an Exothermic Autocatalytic Chemical Reaction" Phys. Rev. E.1995,55(2), 1606.  with Martincigh, B.S.
    • "Oxyhalogen-Sulfur Chemistry:Oxidation of Hydroxymethanesulfinic Acid by Chlorite" J. Phys. Chem. 1996, 100, 9377.    with Salem, M.A.; Chinake, C.R.
    • "Oxyhalogen-Sulfur Chemistry: Oxidation of Hydroxymethanesulfinic Acid by Bromate in Acidic Medium" J. Phys. Chem. 1995, 99, 10231  with Jonnalagadda, S.B.; Chinake, C.R.
    • "Oxyhalogen-Sulfur Chemistry: Oligooscillations in the Formamidinesulfinic Acid - Chlorite Reaction" J. Phys. Chem. 1995, 99,1523.  with Jones, J.B.; Chinake, C.R.
    • "Environmental Chemistry: Complex Reaction Patterns in Some Selected Sulfur Compounds in Aqueous And Gaseous Mixtures" S. Afr. J. Chem.1995,48(12) 1-7.  with Chinake, C.R.
    • "Breakdown of Symmetry, Spatio-temporal Patterns, and Travelling Waves in Oxyhalogen-Sulfur Systems", S. Afr. J. Chem. 1995, 48, 135.   with Hauser, M.J.B. and Chinake, C.R.
    • "Inhomogenous Precipitation Patterns Effect of Thermocapillary Convection" Chem. Phys. Lett. 1994, 227, 593.  with Hauser, M.J.B.
    • "Inhomogenous Precipitation Patterns", Phys. Lett. A 1994, 191, 31.  with Hauser, M. B.
    • "Kinetics and Mechanism of the Complex Oxidation ofAminoiminomethanesulfinic Acid by Iodate in Acidic Medium" J. Phys. Chem. 1993, 97, 13662.  with Mambo, E.
    • "Oxyhalogen-Sulfur Chemistry: Bromate-Aminoiminomethanesulfinic Acid in Acidic Medium". J. Phys. Chem. 1994, 98, 545.  with Chinake, C. R., Jonnalagadda, S. B.
    • "Fingering Patterns and Other Interesting Dynamics in the Chemical Wave Generated in the Chlorite-Thiourea Reaction" J. Phys. Chem. 1994, 98, 4012.  with Chinake, C. R.
    • "Kinetics and Mechanism of the Oxidation of Thiourea by Bromate in Acidic Solution" J. Phys. Chem. 1994, 98, 551.  with Epstein, I. R., Kustin, K.
    • "Chemical Safety, Explosions with Sodium Chlorite", Chem. & Eng. News, March 22, 1993, 4. Sole Author
    • "New Experimental Data on the Chlorite-Thiourea Reaction" J. Phys. Chem. 1993, 97, 11569. with Chinake, C. R.
    • "Complex Oligooscillatory Behavior in the Reaction of Chlorite with Thiocyanate." J. Phys. Chem. 1993, 98, 2908.  with Chinake, C. R., Mambo, E.
    • "Kinetics and Mechanism of the Chlorite-Thiourea Reaction in Acidic Medium." J. Phys. Chem. 1992, 96, 5852-5856.  with Epstein, I. R. and Kustin, K.
    • "Kinetics and Mechanism of the Reaction of Bromine with Thiocyanate." J. Phys. Chem. 1992, 96, 6326-6331.  with Epstein, I. R. and Kustin, K.
    • "Travelling Wave in the Chlorite-Thiourea Reaction." Int. J. Chem. Kinet. 1991, 23, 419-429. with Masere, J.; Muzimbaranda, C.; Manyonda, M. and Dube, S.
    • "Systematic Design of Chemical Oscillators. Part 56. Kinetics and Mechanism of the Oxidation of Hexacyanoferrate(II) by Aqueous Bromine." J. Chem. Soc. Dalton Trans. 1990, 971-975.  with Epstein, I. R. and Kustin, K.
    • "Kinetics and Mechanism of the Oxidation of Thiocyanate by Iodate."J. Phys. Chem. 1991, 95, 770-775  with Epstein, I. R.; Kustin, K.; Manyonda, M.; Masere, J.; Mtambo, M. and Ncube, I.
    • "Kinetics and Mechanism of the Autoinhibitory Iodine-Thiocyanate Reaction." J. Phys. Chem. 1989, 93, 2792-2795.  with Epstein, I. R. and Kustin, K.
    • "Complex Dynamical Behavior in the Oxidation of Thiocyanate by Iodate." J. Phys. Chem. 1989, 93, 1689-1691.  with Epstein, I. R. and Kustin, K.
    • "A Kinetic Study of the Oxidation of Indigo-Carmine with Acidic Bromate." J. Chem. Soc.(Perkin Trans II), 1988, 1111-1115.  with Jonnalagadda, S. B. and Muthakia, G.R.
    • "Oxidation of Thiourea by Aqueous Bromine: Autocatalysis by Bromide." J. Phys. Chem. 1987, 91, 5124-5128.  with Epstein, I. R.
    • "Universality, Multiplicity and the Effect of Iron Impurities on the Belousov Zhabotinskii Reaction" J. Chem. Phys. 1987, 1, 119-129.  with Coffman, K.; McCormick, W.; Nosztizius, Z.; and Swinney, H. L.
    • "Experimental Observations of Complex Dynamics in a New Bromate Oscillator: The Bromate-Thiocyanate Reaction in a CSTR." J. Phys. Chem. 1987, 91, 1557-1561.  Sole Author.
    • "The Bromate-Sulfide System: A Particularly Simple Chemical Oscillator." J. Phys. Chem. 1987, 91, 2689-2690.  with Noyes, R. M.
    • "Complex Kinetics in the Bromate-Iodide Reaction:A Clock Reaction   Mechanism." J. Phys. Chem. 1986, 90, 4126-4131.  with Masvikeni, P. and Sikosana, A.
    • "New Bromate Oscillator: The Bromate-Thiourea Reaction in a CSTR." J. Phys. Chem. 1986, 90, 2802-2804.  Sole Author.
    • "Reaction Between Permanganate Ion and Hydrogen Peroxide: Kinetics and Mechanism of the Initial Phase of the Reaction." Inorg. Chem. 1986, 25, 538-542.  with de Kepper, P.; Epstein, I. R.; and Kustin, K.
    • "Autocatalytic Chlorite-Bromide Reaction."J. Phys. Chem. 1985, 89, 3570-3574.  Sole Author.
    • "Instabilities and Chaos in a Chemical Reaction." Chaos and Statistical Methods, Y. Kuramoto, Ed., Springer-Verlag, 1983.  with Roux, J.-L. and Swinney, H. L.
    • "Observation of a Strange Attractor." Physica D. 1983, 8D, 257-266.  with Roux, J.-L. and Swinney, H. L.
    • "One-Dimensional Dynamics in a Multi-Component Chemical Reaction." Phys. Rev. Lett. 1982, 49, 245-248.  with Wolf, A. and Swinney, H. L.
    • "Nitrous Acid Decomposition Catalysed by an Iron(II) Complex: Tris(3,4,7,8-tetramethyl-1,10-phenanthroline) Iron(II)" J.Am.Chem. Soc.1982, 104, 712-717. with Epstein, I. R. and Kustin, K.
    • "Kinetics of Orthoperiodate Dimerizations Studied by Temperature-Jump Spectrophotometry" J. Chem. Soc. Dalton Transactions, 1980, 2250-2254. with Kustin, K.
    • "Mechanism of the Titanium(III) Reduction of Tris(1,10-phenanthroline)Cobalt(III), Tris(oxalato)cobaltate(III), and Tris(1,10-phenanthroline)Iron(III) in Aqueous Solutions" Inorg. Chem. 1978, 17, 218-221. with Akinyugha, N.; Ige, J.; Ojo, J.; and Olubuyide, O.

     



     



Papers Submitted and In Press

- "Kinetics and Mechanistic Studies of the Hydrolysis of Diisocyanate-Derived Bis-thiocarbamates of Cysteine Methyl Ester"  with Chipinda, I.; Stetson, S. J.; Depree, G. J.; Siegel, P. D. Submitted to Chem. Res. Toxicol.;  2006

- "Comprehensive Kinetics and Mechanistic Studies of the Oxidation of Thiourea and its Metabolites by Oxychlorine Species," with Martincigh, B.; Chikwana, E.; Morakinyo, M.K  2006; In Press.