Chemistry

2006, No. 4

L.A. Onuchak, A.A. Kolesova, S.Y. Kudryashov, O.B. Akopova

GAS-CHROMATOGRAPHIC INVESTIGATION OF ADSORPTION OF HYDROCARBONS ON GRAPHITIZED THERMAL CARBON BLACK, MODIFIED BY DISCOTIC LIQUID CRYSTALS

In the paper a comparison of sorption properties of two adsorb-ents on the base of graphitized thermal carbon black, modified by monomolecular layer of discotic liquid crystals —triphenylene de-rivatives is showed. An effect of chemical structure of peripheral moieties of discogens and density of monolayer of modificator on values of Henry’s constants and thermodynamic characteristics of adsorption of saturated and aromatic hydrocarbons is studied.

V.N. Serezhkin, L.B. Serezhkina

SOME FEATURES OF U(VI) STEREOCHEMISTRY IN OXYGEN CONTAINING COMPOUNDS

The major features of U(VI) stereochemistry in the structure of crystals containing 1465 crystallographically different coordination polyhedra UO_n are considered from the perspective of stereoatomic model. It is found, that the volume of Voronoi–Dirichlet polyhedra of uranium atoms practically does not depend on their coordination number— 5, 6, 7 or 8. On an example of aqua-, nitrate- and carbonatecontaining complexes it is shown, that in a combination to a rule 18 electrons, characteristics of Voronoi–Dirichlet polyhedra allows one to predict composition and structure of uranyl complexes, formed in water-salt systems.

S.Kh. Sharipova, M.N. Nikolaenko, I.F. Shatalaev

SYNTHESIS AND STUDY OF BIOLOGICAL ACTIVITY OF IODIDES (+)-(4S,5S) И (?)-(4R,5R)-1-METHYL-4 (4-NITROPHENYL) - (-AZONIA-3,7-DIOXADICYCLIC (3,3,0) OCTANES

As a result of two-phasic synthesis from (+)-(1S,2S) и (?)-(1R,2R)-2-Amine-1-(4-Nitrophenyl)-1,3-propanediols dicyclic quarternary ammonium salts are received. The forecast of a spectrum of biological activity is executed with the help of computer program PASS. Antibacterial activity of (+)-isomer is found. Distinction in operation of isomers on the general activity of five display enzymes of whey of blood of the man and on relative activity of isoenzymes of lactate dehydrogenase is shown.