Science Journal of Chemistry

Volume 7, Issue 3, June 2019

  • Enumeration of Kekule Structures of Polyhex Monoradical Having Only Linear Assemblies of Benzenoid Hydrocarbons

    Alphonse Emadak, Robert Martin Nemba, Leonel Tsassi Djoumessi, Jules Cesar Epee Ndongue

    Issue: Volume 7, Issue 3, June 2019
    Pages: 56-61
    Received: 1 June 2019
    Accepted: 9 July 2019
    Published: 22 July 2019
    Abstract: A mathematical process of enumeration of Kekule structures of any polybenzenoïd monoradical having only linear assemblies of benzenoid hydrocarbons is given by using a method which consisted of the excision of the radical center in order to obtain a conjugated hydrocarbon having a 12-annulene core ring appended to one or more polybenzenoïd fragmen... Show More
  • Spectroscopic Investigation of the Mixture of Ascorbic Acid and Sodium Benzoate

    Femi Francis Oloye

    Issue: Volume 7, Issue 3, June 2019
    Pages: 62-66
    Received: 31 July 2019
    Accepted: 20 August 2019
    Published: 12 September 2019
    Abstract: UV spectroscopy was employed to understand the possible interaction between ascorbic acid (AA) and sodium benzoate (SB). The absorbance of each of the preservatives was taken singly (285 and 291nm for SB and AA, respectively) and the spectrum of a common drink that contained the two preservatives was recorded. Then the interaction of AA with SB was... Show More
  • Synthesis, Characterization and Antimicrobial Activities of Cobalt(II), Nickel(II) and Copper(II) Complexes of Aroylhydrazone Mixed with Aspirin

    Olawale Folorunso Akinyele, Temitope Oluwatola Akinnusi, Temitope Adekunle Ajayeoba, Ayowole Olaolu Ayeni, Lateefah Moyosore Durosinmi

    Issue: Volume 7, Issue 3, June 2019
    Pages: 67-71
    Received: 12 June 2019
    Accepted: 23 July 2019
    Published: 17 September 2019
    Abstract: Co(II), Ni(II), and Cu(II) complexes of aroylhydrazone mixed with aspirin were synthesized and characterized by percentage metal analysis, infrared and electronic spectroscopy, melting point, solubility, molar conductance and room temperature magnetic moment measurements. Infrared spectra data revealed that the aspirin behaved as a bidentate ligand... Show More