Main Subjects : Chemistry


Synthesis, Characterization and Evaluation Antibacterial Activity of Some (1,3-Oxazepine-4,7-dione and 1,3-Benzooxazepine-4,7-dione) Derived from Sulphamethoxazole using Irradiation Method.

Fouad Ahmed Omar; Ayad Sulaiman Hamad; Nihad Ismael Taha

Kirkuk University Journal-Scientific Studies, 2022, Volume 17, Issue 2, Pages 27-35
DOI: 10.32894/kujss.2022.131552.1048

In this study, new compounds of Schiff bases were prepared (1-6), from the reaction of sulfamethoxazole with benzaldehyde derivatives. Schiff bases (1-6) converted to 1,3-Oxazepine-4,7-dione and 1,3-Benzooxazepine-4,7-dione derivatives (7-18) through the reaction of Schiff bases with maleic anhydride as well as phthalic anhydride using crushing, grinding and microwave irradiation method. The structures of all prepared compounds have been identified by (I.R) technique, also some of the prepared compounds have been identified by (1H-NMR,13C-NMR) techniques. The biological activities have been carried out for some compounds such as (9,10,11,12,13,14,15,16,17) against two types of bacteria such as Staphylococcus aureus and Esherichia coil.

Synthesis and Characterization of Some Ni(II) and Cu(II) Complexes with Carboxymethyl Chitosan

Marwan Ahmed Jassim Al-Salami; Moneer Khadhim Muhsin; Ahmed A. H. Al-kadhimi

Kirkuk University Journal-Scientific Studies, 2022, Volume 17, Issue 2, Pages 20-26
DOI: 10.32894/kujss.2022.132503.1055

This research concerns the synthesis of two carboxymethyl chitosan (CMCs) complexes with Cu(II) and Ni(II). The synthesized complexes were characterized using (FT-IR) showing absorption peaks in the region (566 cm-1) which belongs to the bonds of Cu(II) with carboxymethyl chitosan [Cu(CMCs)2] and (580 cm-1) which belongs to the bonds of Ni(II) with carboxymethyl chitosan [Ni(CMCs)2]. Molar conductivity was determined for both complexes [Cu(CMCs)2] and [Ni(CMCs)2] and the results showed that these complexes non-electrolytes . UV-visible has been also recorded for [Cu(CMCs)2] complex solution (0.50 x 10-3M) is absorbed at (295 nm). It is proposed that [Cu(CMCs)2] possess a square planar structure. Whereas [Ni(CMCS)2] is absorbed at (290 nm) supposing that the structure of this complexes is tetrahedral. The absorbance of both complexes can be attributed to the (π→π*).

Synthesis, characterization, anti-bacterial activity study of vanillin Schiff base complexes

Gazwan I. Saleh; Hassan Mohammed; Ziyad M. Mustafea

Kirkuk University Journal-Scientific Studies, 2021, Volume 16, Issue 4, Pages 13-20
DOI: 10.32894/kujss.2021.170450

The Fe(II), Co(II), Ni(II) Cu(II), Zn(II) and Hg(II) complexes were prepared by reacting their salts with the derived Schiff base ligands from condensing vanillin and o-phenylenediamine with a ratio (1:1), (2:1) respectively. Ligands and their complexes were distinguished using analytical, physical and spectroscopic methods. The elemental analysis values show that stoichiometry to be 1:1 [M:L]. Molar conductivity measurements detect that the complexes are non-electrolytic .From the information obtained through electronic measurements, magnetic sensitivity   .The square planar geometry around of Ni(II) and Cu(II), and tetrahedral geometry around of the other metals . The prepared complexes showed different activity towards inhibiting bacterial growth for E. coli k.pneomonia

Evaluating and Modeling of Parabolic Solar Cooker by RSM

Zain alabdeen Hussein Obaid; Osama Ibrahim Abd

Kirkuk University Journal-Scientific Studies, 2018, Volume 13, Issue 3, Pages 75-95
DOI: 10.32894/kujss.2018.13.3.7

The present paper has dealed with two stages. In the first, an experimental set up of the parabolic cooker with direct use has been made-up and studied at Renewable Energy Research Center-University of Anbar. Based on experimental results, statistical studies by using Response Surface Methodology (RSM) have been done to identify the optimum influential parameters and estimate mathematical temperature model. In this study, parabolic collector parameters that can effect on the Parabolic Collector efficiency are studied in more details. Six amounts of water are used for measuring the increasing of temperature relative to the measuring time. Parabolic Collector parameters are optimised with the consideration of single-response; temperature of the working fluid (in terms of water). The achieved experimental results are analysed by the desirability functional analysis DFA approach, and optimal levels of input factors have been distinguished. ANOVA also has been utilized to recognize the assurance of powerful factors on the response).