S 70 Sol-Gel Synthesis and Physicochemical Properties of Organosilicon Materials Functionalized by Amino Groups / L. K. Neudachina, N. V. Lakiza, A. V. Pestov, V. A. Osipova, L. V. Adamova, E. M. Gorbunova // Glass Physics and Chemistry. - 2011. - Vol.37, № 5. - С. 537-544 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): "SOL-GEL" MATERIALS -- AMINOPOLYSILOXANES -- SPECIFIC SURFACE AREA Аннотация: The hybrid materials based on polysiloxane modified by amino groups have been synthesized by the sol-gel method. Aminated polysiloxane has been prepared by the copolycondensation reaction of tetraethoxysilane with gamma-aminopropyltriethoxysilane (APS-1) and through the modification of the product (APS-2) of the hydrolysis of tetraethoxysilane by gamma-aminopropyltriethoxysilane. The composition of sorbents has been confirmed by the elemental analysis and IR Fourier spectroscopy. The high degree of sorption extraction of copper(II), nickel(II), cobalt(II), zinc(II), cadmium(II), and lead(II) ions in the case of their coexistence in an ammonia-acetate buffer solution has been observed for polysiloxanes APS-2. The synthesized surface-modified materials exhibit the highest selectivity to nickel(II) and cobalt(II) ions \\\\Expert2\\nbo\\Glass Physics and Chemistry\\2011, V. 37, N 5, P.537-544.pdf |
W 31 Water-soluble 2-aminomethylidene-1,3-dicarbonyl compounds as new chalcogenide colloidal stabilizers [Electronic resource] / D. N. Bazhin, Yu. S. Kudyakova, T. I. Gorbunova, N. S. Kozhevnikova, N. S. Suntsov, Ya. V. Burgart, A. A. Rempel, G. N. Chupakhin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2013. - Vol.49, №3. - P315-320. - Библиогр.: с. 320 (21 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): NITROGEN ATOM -- N,N-DIMETHYLETHANE-1,2-DIAMINE -- CADMIUM Аннотация: Reactions of 2-ethoxymethylidene derivatives of 1,3-dicarbonyl compounds with N,N-dimethylethane-1,2-diamine gave a number of 2-[(2-dimethylaminoethyl)amino]methylidene-1,3-dicarbonyl compounds which were subjected to regioselective quaternization at the tertiary nitrogen atom with methyl iodide. The resulting quaternary ammonium salts inhibited aggregation of cadmium and zinc sulfide sols in aqueous medium \\\\expert2\\NBO\\Russian Journal of Organic Chemistry\\2013, 49, (3), 315-320.pdf |
S 98 Synthesis and characterizations of new cadmium complexes based on poly(aza)arene-annelated 2,2 '-bipyridines [Electronic resource] / D. S. Kopchuk, P. A. Slepukhin, I. S. Kovalev, A. F. Khasanov, O. S. Taniya, O. V. Shabunina, G. V. Zyryanov, V. L. Rusinov, O. N. Chupakhin // Polyhedron. - 2016. - Vol. 110. - С. 235-240 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): Cd(II) COMPLEX -- 2,2 '-BIPYRIDINES -- POLY(AZA)ARENES Аннотация: We have developed an efficient synthesis of new cadmium(II)-containing complexes based on poly(aza) arene-annelated 2,2'-bipyridines. All the complexes were characterized by X-ray structural analysis. The influence of the type of the ligand at the structural properties of the complexes has been studied. \\\\expert2\\NBO\\Polyhedron\\2016, v.110, p.235-240.pdf |
Complexing properties of N-[1,1-bis(hydroxymethyl)ethyl]-and N-[tris(hydroxymethyl)methyl]-β-alanine / G. P. Zharkov, O. V. Filimonova, Y. S. Petrova [et al.] // Russian chemical bulletin. - 2022. - Vol. 71, № 1. - P152–157 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): β-ALANINE Аннотация: Protolytic and complexing properties of N-[1,1-bis(hydroxymethyl)ethyl]- and N-[tris-(hydroxymethyl)methyl]-β-alanine were estimated using the potentiometry. Values of the dissociation constants of amino and carboxyl functional groups in molecules of these reagents, as well as the stability constants of their complexes of various compositions with copper(II), cobalt(II), nickel(II), zinc(II), cadmium(II), silver(I), magnesium(II), calcium(II), strontium(II), and barium(II) ions, were calculated. The hydroxyalkylation of β-alanine tunes its properties towards the considered metal ions. Complexes of copper(II) ions with these β-alanine derivatives are the most stable complex compounds among explored herein. |