Browsing by Author "OBALEYE, JOSHUA A."

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    SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF NANO-SCALE TWIN CRYSTAL OF COPPER TARTARATE
    (IMPACT: International Journal of Research in Applied, Natural and Social Sciences, 2017-05-30) OLAWALE, MARGARET D.; OBALEYE, JOSHUA A.; NEUBURGER, MARKUS
    Twin crystal structure coordination compound [Cu (Tar)2(2H2O)] was synthesized using soft synthetic method by reaction of Cu (II) salt with tartaric acid after complete dissolution of the two reactants. The compound was characterized by Elemental Analysis, Infrared, UV and Visible spectroscopy and Single crystal x-ray diffraction. Elemental Analysis, Infrared, UV and Visible spectroscopy vividly showed the coordination of the deprotonated group of the tartaric acid being coordinated to the copper metal. The 3 dimensional model of the compound revealed twin compound to be found in every single crystal of the compound.The crystals display triclinic space group with a = 6.7007 (8) Å, b = 7.3002 (9) Å, c = 8.9439 (14) Å, α = 68.499 (4)0, β = 79.764 (6)0 and γ = 65.703 (4)0 by exhibiting octahedral geometry. Each copper (II) ion is thus coordinated to six oxygen atoms; 2 carboxylate oxygen, two hydroxyl oxygen and two oxygen from water molecule.
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    Zinc(II) Complex of Meso-Tetraphenylporphyrin With 4-Methoxyaniline: Crystal Structure and Antimicrobial Activities of 4-Methoxyaniline-5, 10, 15, 20-Tetraphenyl-Porphyrinatozinc (II)
    (Taylor and Francis Group, 2014-11-04) OBALEYE, JOSHUA A.; TELLA, ADEDIBU C.; OBIYENWA, GABRIEL K.; SIMON, NZIKAHYEL; OLAWALE, MARGARET D.
    4-Methoxyaniline-5,10,15,20-tetraphenylporphyrinatozinc(II), [(ZnTPP(MOAN)] 1 was synthesized (MOAN D 4-methoxyaniline) and characterized by elemental analysis and spectroscopic techniques. The molecular structure of 1 was determined by single-crystal X-ray crystallography. The structure revealed a triclinic crystal system and the space group P1 with the central metal adopting slightly distorted square pyramidal geometry with 4-methoxyaniline in the axial position. The antimicrobial activities were carried out using a well diffusion method and the zone of inhibition of four bacteria and two fungi was measured.