Hassan AM, Abd El-Wahab ZH, Salman A A, Abd El-Rahman NM Salama TAM, El-Tantawy ASM and Khalid MW*
DOI: 10.37421/ csj.2020.11.211
Synthesis and characterization of organic ligand N-(2-chloro phenyl)-N’ benzenesulfonyl thiourea (H2L1) was described. The formed ligand incorporated several potential donor sites, making it a versatile complexing agent with metal ions due to the presence of the sulfonyl and thiourea groups, each solely may act as a key constituent of many biologically active species. In this work, we present the synthesis of Pt (II), Pd (II) and Au (III) metal complexes and their coordination behavior towards the unsymmetrical organic ligand (H2L1) using microwave-assisted irradiation. The microwave approach provides clean, shorter reaction times and enhancements in yields. The prepared metal complexes have been characterized by elemental analysis, FT-IR, 1HNMR, UV-Vis, thermal analysis and magnetic susceptibility. They were tested for their antibacterial activity against Gram positive, Gram-negative bacteria as well as fungi. Also anti-cancer assay was applied against two cell lines; breast cancer cells (MCF-7) and liver cancer cells (HepG-2). The IR spectral data indicate that the ligand H2L1 coordinates to metal ions through sulfonyl and thionyl groups in a tetradentate square planer manner for PdII and PtII ions while in case of AuIII it takes an octahedral shape. Based on spectrophotometric investigations, it is suggested that Pd(II), Pt(II) and Au (III) form 1:1 complexes. The molecular compositions of the complexes were proposed on the basis of chemical analyses and spectrophotometric evidences.
K E Srikanth
DOI: 10.37421/ csj.2020.11.212
Computation Chemistry is general term covering any use of computing in the direct study of chemical problems. As such , it includes the entire range of computational techniques that are applied Chemistry, whether their roots lie in physics- eg., quantum mechanics, stastical mechanics-mathematics, informatics and/or other underlying scientific disciplines. Computational chemistry techniques can predict molecular properties for comparison with experiment, to elucidate ambiguous or otherwise unclear experimental data, and to model short-lived, unstable intermediates and transition states which are impossible to observe directly.
K E Srikanth
DOI: 10.37421/ csj.2020.11.213
Editor of Journal of Chemical Sciences Journal has pleased to mention that we have successfully published 10th volume and has released 4 issues per year. In 2020 it has released volume 11 issue 1 & 2 without any delay. Chemical Sciences Journal is having the Index-Copernicus value of 84.15 and Journal impact factor is 0.42*. Along with these CSJ is having 2150-3494 as its International Standard Serial Number (ISSN). More than 50 well eminent professionals throughout the globe were acting as editorial board members for our journal.
Aborode AT, Sha Rafiu R, Jennifer N
DOI: 10.37421/ csj.2020.11.214
The occurrence of the novel coronavirus known as SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) was first reported in Wuhan City and Hubei Province, China on, December 8, 2019. COVID-19 epidemic rapidly spread from a single city to the entire country in 30 days and has since become a universal plague with 808,500 recorded cases, 39,706 deaths, and 174,455 recovered cases as of March 31, 2020.
Samuel E*, Salisu S, Amina A, Omogbeme J and Hadiza RS
DOI: 10.37421/CSJ.2020.11.209
This study involves the physiochemical, microbiological and selected heavy metals variations of palm oil samples sourced from galadima, tarauni, yan-kura markets of kano state and samples from Kogi and Edo States of Nigeria. The samples were evaluated using standard documented procedures. The result showed; samples from Edo had: oil acid value 0.73 ± 0.13, iodine value 29.25 ± 0.09, peroxides value 2.68 ± 0.09, saponification value 194.31 ± 2.21, moisture content 1.13 ± 0.56, ester value 195.04 ± 2.08. The samples from Kogi had; acid value 0.88 ± 0.11, iodine value 11.54 ± 0.24, peroxides value 5.79 ± 0.62, saponification value 187.49 ± 0.56, moisture content 1.60 ± 0.10, ester value 186.61 ± 0.45. The sabon-gari samples had; oil acid value 0.86 ± 0.17, iodine value 30.37 ± 0.34, peroxides value 3.25 ± 0.95, saponification value 188.66 ± 1.88, moisture content 1.19 ± 0.59, ester value 187.8 ± 1.71. Galadima samples had: acid value 0.89 ± 0.14, iodine value 29.31 ± 0.47, peroxides value 6.8 ± 0.16, saponification value 182.62 ± 3.65, moisture content 1.82 ± 0.67, ester value 181.73 ± 3.5. Taruani samples had; acid value 0.56 ± 0.13, iodine value 29.63 ± 0.81, peroxides value 5.79 ± 0.62, saponification value 194.07 ± 0.47, moisture content 1.43 ± 0.71, ester value 193.51 ± 0.44. Yan-kura samples had: acid value 0.98 ± 0.09, iodine value 30.78 ± 0.26, and peroxides value 6.2 ± 0.14, and saponification value 184.045.00, and moisture content 1 21 ± 0.60, ester value 183.06 ± 4.91. The microbiological analysis of the samples revealed sabon-gari samples had 1.0 × 10-5, galadima 7.6 × 10-3, Tarauni 7.2 × 10-4, Kogi 1.2 × 10-5, Yan-kura 1.1 × 10-5 and Edo 6.8 × 10-3 cfu/ml respectively. The heavy metals analysed were cadmium (Cd), arsenic (As), mercury (Hg) and lead (Pb). The concentrations of Cd ranged between 0.001 (ppm) Tarauni to 0.019 (ppm) Galadima, As (ppm) ranged between 0.01 Edo and Kogi to 0.047. Hg (ppm) 0.01 Edo to 0.19 galadima and Pb (ppm) 0.05 Kogi to 0.18 galadima. From the results obtained, it shows that Yan-kura has the most polluted oil due to the exposure to the environment. The samples collected are safe for consumption as at time of analysis, however continuous monitoring is required.
