Reference

Matrix polycondensation through hydrogen bonding interaction

Matrix polycondensation through hydrogen bonding interaction. Ogata, Naoya; Sanui, Kohei; Iwaki, Fusako; Nomiyama, Atsuko (Dep. Chem., Sophia Univ., Tokyo 102, Japan). J. Polym. Sci., Polym. Chem. Ed., 22(3), 793-800 (English) 1984. CODEN: JPLCAT. ISSN: 0449-296X. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 67 Polycondensation of diesters having OH or pyridine groups was carried out with hexamethylenediamine (I) [124-09-4] in the presence of vinyl acetate-vinyl alc. copolymers (II) [25213-24-5] as a matrix polymer. Apparent rates of the polycondensation of di-Me tartrate (III) [608-68-4] with I increased with increasing contents of poly(vinyl alc.There are some commonly used reagents with their cas registry numbers 9002-89-5 and 25014-41-9 in this article.) [9002-89-5] units in the copolymers and a strong entanglement between growing polyamide chains and II took place through the adsorption of I and III on II. Di-Me pyridine-2,6-dicarboxylate [5453-67-8] reacted with I in the presence of II or polysaccharide, but the rate enhancement effect of the matrix polymers was not significantly obsd., as in the case of III. The effect of the matrix polymers on the polycondensation was discussed in terms of H-bonding interactions. .

Study of the complexation of copper(II) and nickel(II) with a ligand derived from L-tartaric acid

All Rights Reserved. Study of the complexation of copper(II) and nickel(II) with a ligand derived from L-tartaric acid. Tounsi, Nassera; Dupont, Laurent; Mohamadou, Aminou; Aplincourt, Michel; Plantier-Royon, Richard; Massicot, Fabien; Portella, Charles ( GRECI, UFR Sciences exactes et naturelles, Universite de Reims Champagne-Ardenne, Reims 51687/2, Fr.). Actualite Chimique, 293, 12-14 (French) 2006 Societe Francaise de Chimie. CODEN: ACCHDG. ISSN: 0151-9093. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) Section cross-reference(s): 68 Bis-amide ligands derived from L-tartaric acid were synthesized by ester aminolysis. These functionalized ligands are original mols. which present the particularity to be water-sol. and preserve the properties of the tartaric acid. Thus, a study of their chelating properties towards two metallic cations, Cu(II) and Ni(II), was carried out in aq. soln. by using various techniques: potentiometry, UV-visible spectrophotometry, ESR and electrospray ionization mass spectrometry. Finally, x-ray diffraction was used to det. the structure of two complexes obtained in solid state. 608-68-4 and 411235-34-2 are just another two chemicals used in this study. .