Abstract: A study was conducted on the reaction kinetics of methionine sulfone oxidation in an aqueous solution using potassium permanganate. The kinetic results indicated that the oxidation reaction occurs through two distinct paths: the first pathway is a non-catalyzed reaction, while the second pathway is auto-catalyzed by the product manganese (II) oxide. The rate of […]
Abstract: An efficient and eco-friendly indirect spectrophotometric method has been devised to determine the amount of atenolol in both pure form and in tablet formulations. This method relies on the oxidation of atenolol using an excess of standard potassium permanganate in an acidic medium. The remaining oxidant is determined by measuring the decrease in absorbance […]
Abstract The effect of synthesized composite materials BAF-1 and BAF-2 (conditional names) based on coordination polymers on improving the rheological properties of oil was studied. The mechanism of action of nanostructured coordination polymers was studied by X-ray and electron microscopic methods. These composite materials form non-valent compounds with self-construction and self-organization due to their porous […]
Abstract The goal of the research was to obtain competitive refractory products, the use of which would be budgetary. To achieve this goal, we used mixtures prepared with the addition of sand and brick dust to dolomite. We planned to obtain highly refractory clinker from them. A comparative study of dolomites, sands, and magnesite brick […]
Abstract Some new Mannich bases 3a-3f were produced by the treatment of 4,4'-(phenylmethylene)bis((prop- 2-yn-1-yloxy)benzene) 2a-2f with acetylene ether in the presence of formaldehyde in ethanol. The 4,4'- (((phenylmethylene)bis(4,1-phenylene))bis(oxy))bis(N,N-diethylbut-2-yn-1-amine) (Mannich bases) demonstrated anticancer efficacy through docking with the C-met tyrosine kinase receptor protein, evidenced by docking scores ranging from -3.58 to -5.0 kcal/mol, in comparison to […]
Abstract Comparative analysis of the structural parameters of the substituted cyclopentadienyl moieties (tBuC5H4 and tBu2C5H3) of two binuclear molybdenum complexes ((tBuCp)2Mo2(CO)6 (1) and (1,2- tBu2Cp)2Mo2(CO)6 (3)) and two sandwich complexes of iron (the cation of 1,1-di-tert-butylferrocenium (tBuCp)2Fe+ (4) and 1,2,1,2-tetra-tert-butylferrocene (1,2-tBu2Cp)2Fe (5)) allowed us to identify the structural features of the tBu2C5H3 fragment in (3) […]
Abstract. This study explores the purification methods of used lubricating oils from internal combustion engine lubrication systems using hydrochloric acid (HCl), nitric acid (HNO₃), sulfuric acid (H₂SO₄), acetic acid (CH₃COOH), and trichloroacetic acid (CCl₃COOH). The research focuses on the physical and physicochemical properties of the treated oils, including kinematic viscosity, viscosity index, density, flash and […]
Abstract This study manufactured and described new organic salts containing (benzylcarabazoliumchloride) and (benzyltriphenylphosphonium) ligands, which were prepared and synthesized and then interacted with some transition metals (Cr(III), Co(II), Ni(II), Cu(II), and Zn(II)). Obtained complexes were characterized by element analysis, FTIR (Fourier change infrared) and UV-vis spectral investigation, magnetic measurement, conduction measurement, and 1H-NMR for the […]