Reference

Bisphosphonate chelating agents: complexation of Fe(III) and Al(III) by 1-phenyl-1-hydroxymethylene bisphosphonate and its analogues

Bisphosphonate chelating agents: complexation of Fe(III) and Al(III) by 1-phenyl-1-hydroxymethylene bisphosphonate and its analogues. Gumienna-Kontecka, Elzbieta; Silvagni, Roberta; Lipinski, Radoslaw; Lecouvey, Marc; Cesare Marincola, Flaminia; Crisponi, Guido; Nurchi, Valeria M.; Leroux, Yves; Kozlowski, Henryk (Faculty of Chemistry, University of Wroclaw, Wroclaw 50-383, Pol.). Inorganica Chimica Acta, 339, 111-118 (English) 2002 Elsevier Science B.V. CODEN: ICHAA3. ISSN: 0020-1693. DOCUMENT TYPE: Journal CA Section: 68 (Phase Equilibriums, Chemical Equilibriums, and Solutions) Section cross-reference(s): 72, 73, 77 Bisphosphonate ligands were found to be very efficient chelating agents for both Al(III) and Fe(III) ions. Potentiometric and spectroscopic data allow evaluation of the coordination equil. in the solns.Several substances like 2809-21-4 may be metioned in this study. contg. 1-phenyl-1-hydroxymethylene bisphosphonate and its three analogs with Al(III) and Fe(III) ions. At pH below 4 the bis-complexes are formed, while above pH 4 the major species are equimolar, monomeric for Al(III) or dimeric for Fe(III) complexes. The large steric hindrance and high elec. charge are the major factors influencing the complex stoichiometry. The formation of the dimeric Fe(III) with m-oxo or m-hydroxo bridges were supported by measurements of the magnetic moments using Evans' method. The stabilities of the complexes formed are higher than those for deferiprone (from the literature). The latter is currently used in clinics as a chelating agent. .

Compositions containing peroxycarboxylic and carboxylic acids for control of plant pathogens

Compositions containing peroxycarboxylic and carboxylic acids for control of plant pathogens. Hei, Robert D. P.; Hilgren, John Dennis; Salverda, Joy Ann; Herdt, Brandon Leon (Ecolab Inc., USA). U.S. Pat. Appl. Publ. US 2003026846 A1 6 Feb 2003, 8 pp. (English). (United States of America). CODEN: USXXCO. CLASS: ICM: A61K035-42. ICS: A61K035-22. NCL: 424557000; 424558000. APPLICATION: US 2001-896807 29 Jun 2001. DOCUMENT TYPE: Patent CA Section: 5 (Agrochemical Bioregulators) Microbial pathogens on living plant tissue are controlled by treating said plant tissue with a dil. aq. soln. comprising an effective amt. of one or more aliph. C2-C12 peroxycarboxylic acids, and an aliph. C3-C12 carboxylic acid, wherein the mole ratio of aliph. carboxylic acid to peroxycarboxylic acid is less than about 3:1.Several substances like 2809-21-4 may be metioned in this study. The living plant tissue comprises a germinating seed, a growing tuber, a plant cutting, a growing plant, or rooting stock or graft. .