Membrane Transport of Inorganic Acids with α- Aminophosphoryl Compounds

Transport of some inorganic acids (HCl, HBr, HClO₄, HNO₃, H₂SO₄, and H₂PO₄) through hydrophobic impregnated membranes with aminophosphoryl compounds of the general formula R ₂ ¹ P(O)CH₂ ⋅ NR²R³ [R¹ = C₄H₉(C₂H₅)CHCH₂O, R² = C₄H₉, R³ = C₈H₁₇; R¹ = R³ = C₈H₁₇, R² = H; R¹ = C₁₀H₂, R² = R³ = C₂H₅; R¹ = C₁₀H₂₁, R² + R³ = (CH₂)₂O(CH₂)₂; R¹ = C₈H₁₇, R² = H, R³ = 2-quinolyl] and dodecylamine as carriers was studied. The membrane phases were solutions of the carriers in phenylcyclohexane and tridecane. General regularities that correlate the structure of an aminophosphoryl compounds to its transport properties toward inorganic acids were established. The largest flows are characteristic of perchloric, nitric, and hydrobromic acids.__________Translated from Zhurnal Obshchei Khimii, Vol. 75, No. 4, 2005, pp. 575–578.Original Russian Text Copyright © 2005 by Garifzyanov, Shirshova, Cherkasov.     

Conversion of furan compounds in the presence of polymeric gel-immobilized catalysts

Based on studies of catalytic oligomerization of furyl alcohol, 2-furfurylydeneacetone and tetrachlorofuran in the presence of gel-immobilized complexes (GIC) Al(OPh)₃, BF₃ and Ti(OBu)₄, an oligomerization mechanism is suggested and supported experimentally.

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(), 2- () () - (), Al(OPh)₃, BF₃ Ti(OBu)₄. .

     

Specific features of the interaction of components in the DMSO−HBr−Pd0 system

The products of interaction of components in the donor-acceptor electron-transport (DAET) DMSO−HBr system and their complex formation with the metallic palladium surface were studied. H₂O and Me₂S (main reaction products) and CO, CS₂, C₂H₆, MeBr, H, and CH₄ (minor reaction products) were found in the gas phase by mass spectrometry (MS). The samples of metallic palladium treated with the DAET system with a components ratio corresponding to the minimum and maximum rates of metal dissolution were studied by the methods of thermoprogrammed desorption with MS detection (TPD-MS) and XPS. According to the TPD-MS data, two forms of Me₂S are present on the metal surface, whereas the XPS method detected two complexes with the molecular compositions Pd^IIBr₄S_1.26 and Pd^IIBr_3.86S_1.42. The addition of an aqueous solution of NaOH to the system results in the formation of HCOONa, which indicates that compounds (CH₂O, HCOOH) capable of reducing the palladium complexes are present in the DAET system. Published inIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 1740–1743, October, 2000.     

Synthesis and structure of carbonyl-containing sulfonium complexes of silver in the DMSO-HX-ketone system

The ionic silver complexes [Me₂S⁺CH₂COR]AgX₂ ^–, where X is Br or I and R is Me or Ph, in the Ag⁰(AgX)-DMSO-HX-ketone system are synthesized and characterized by the x-ray structural method.Deceased.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1889–1894, August, 1989.     

On archimedean extensions ofAO-groups

The concept of almost orthogonality is a variant for extending the concept of the orthogonal elements of lattice-ordered groups to arbitrary partially ordered groups. In the present paper, the notion of an Archimedean extension of anAO-groups is studied. Some results are obtained concerning interpolationAO-groups. Translated from Itogi Nauki i Tekhniki, Seriya Sovremennaya Matematika i Ee Prilozheniya. Tematicheskie Obzory. Vol. 74, Algebra-15, 2000.     

Some reactions in alkaloids of carex brevicollis

Nitro derivatives of brevicolline, brevicarpine, and methyl- and acetylbrevicarpines have been reduced to the amino compounds with stannous chloride in hydrochloric acid. 6-Aminobrevicolline, which has been isolated and characterized in the form of the benzoyl derivative, has been converted by the Sandmeyer reaction into 6-bromobrevicolline.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 952–953, July, 1973.     

On linearly ordered linear algebras

The Kopytov order for any algebras over a field is considered. Necessary and sufficient conditions for an algebra to be a linearly ordered algebra are presented. Some results concerning the properties of ideals of linearly ordered algebras are obtained. Some examples of algebras with the Kopytov order are described. The Kopytov order for these examples induces the order on other algebraic objects.     

On linear \mathcal{K} -ordered rings

This paper deals with an approach to the ordering of rings, which was introduced by V. M. Kopytov for Lie algebras. The conditions of existence of a linear order in rings are found. The properties of ideals of linear ordered rings are investigated.     

On prime radicals and wreath products of partially ordered groups

The notion of a wreath product for partially ordered groups is considered. A series of results on semidirect products of $ \mathcal{A}\mathcal{O} $ -groups and interpolation groups is obtained. Some results are obtained concerning prime radicals of directed groups.