Results 131 to 140 of about 3,360 (187)

Degradation of organophosphonates by Penicillium citrinum

Letters in Applied Microbiology, 1992
Utilization of organophosphonates as the sole source of phosphorus, carbon or nitrogen by a soil isolate of Penicillium citrinum was studied. Penicillium citrinum was found to utilize 2-aminoethylphosphonic and 2-oxoalkylphosphonic acids as the sole phosphorus source whereas 1-hydroxyalkylphosphonates as well as 1-aminoalkylphosphonates and their ...
Barbara Lejczak, Paweł Kafarski, Ewa Zboińska, I. Maliszewska   +3 more
openaire   +2 more sources

ChemInform Abstract: Synthesis of Polyfunctional Organophosphonate Ligands

ChemInform, 1989
ABSTRACT Bifunctional and polyfunctional ligands are finding increasing applications in metal ion liquid-liquid extraction processes, and there is interest in developing more rational design parameters to assist in the construction of ion specific ligand systems.
Eileen N. Duesler, R. T. Paine, S. Karthikeyan, Robert R. Ryan, Riley Schaeffer, G.S. Conary, A.A. Russell, D. J. Mccabe, D. Cromer   +8 more
openaire   +3 more sources

Fluorescent organophosphonates as inhibitors of microbial lipases

Chemistry and Physics of Lipids, 2003
Short- and long-chain 1-O-alkyl-2-acylaminodeoxyglycero- and alkoxy-alkylphosphonic acid p-nitrophenyl esters were synthesized as inhibitors for analytical and mechanistic studies on lipolytic enzymes. The respective compounds contain perylene or nitrobenzoxadiazole as reporter fluorophores covalently bound to the omega-ends of the respective 2 ...
Olga Oskolkova, Elfriede Zenzmaier, Albin Hermetter, Robert Saf   +3 more
openaire   +3 more sources

Ionothermal synthesis of two novel metal organophosphonates

Dalton Trans., 2009
Two novel metal phosphonates, Al(5)F(C(4)H(9)PO(3))(6)(OH)(2)(C(4)N(2)H(6))(2) and Ga(4)F(2)(C(4)H(9)PO(3))(8)H(5).(C(7)N(2)H(11)) have been prepared using an ionothermal approach and their structures solved using single-crystal X-ray diffraction. In , the breakdown of the ionic liquid solvent has occurred and a fragment of the cation coordinates to ...
Byrne, Peter J., Wragg, David S., Warren, John E., Morris, Russell E.   +3 more
openaire   +4 more sources

Heterocyclic Amine Derivatives of Zinc Organophosphonates

Chemistry of Materials, 2004
A series of novel zinc(II) organophosphonates with coordinated 2,2‘-bipyridyl (2,2‘-bipy, C10H8N2) and 1,10-phenanthroline (phen, C12H8N2) ligands (with the proposed formulations:  Zn(O3PC6H5)(C12H8N2), Zn2(O3PR)2(C12H8N2) (R = C6H5CH2, C2H5, CH3), and Zn2(O3PR)2(C10H8N2)(H2O) (R = C6H5, C6H5CH2)) has been prepared and characterized.
Kay Latham, Malcolm D. Hobday, Colin Rix, Rachael Clarke   +3 more
openaire   +2 more sources

Fireproofing of polyurethane elastomers by reactive organophosphonates

Polymer International, 2003
AbstractPolyurethane elastomers were prepared with hydroxytelechelic polybutadiene (HTPB) as polyol, modified 4,4′‐diphenylmethane diisocyanate (modified MDI) as liquid polyisocyanate, and phosphonate diols as chain extenders and flame retardant compounds.
El Khatib, Wassef, Youssef, Boulos, Bunel, Claude, Mortaigne, Bruno   +3 more
openaire   +4 more sources

Non-molecular monovalent metal organophosphonates and diphosphonates

Journal of Solid State Chemistry, 2019
Abstract The solid state chemistry of non-molecular monovalent metal organophosphonates and diphosphonates is relatively new and evolving research arena. The syntheses and structural characterization of about fifty such compounds are reported in the literature.
Nitin Balkrushna Padalwar, K. Vidyasagar
semanticscholar   +3 more sources

Microbial degradation of organophosphonates by soil bacteria

Microbiology, 2008
Bacteria that can utilize glyphosate (GP) or methylphosphonic acid (MPA) as a sole phosphorus source have been isolated from soil samples polluted with organophosphonates (OP). No matter which of these compounds was predominant in the native habitat of the strains, all of them utilized methylphosphonate.
T. V. Shushkova, A. A. Leont’evskii, I. T. Ermakova   +2 more
openaire   +3 more sources

Preparations of Metal Trichalcogenophosphonates from Organophosphonate Esters

Inorganic Chemistry, 2012
A new method for the preparation of metal trichalcogenophosphonates is presented wherein organophosphonate esters are first reduced with LiAlH(4) and subsequently treated with an organometallic reagent and elemental sulfur or selenium to give the desired trichalcogenophosphonate complex.
Robert P. Davies, Laura Patel, Andrew J. P. White   +2 more
openaire   +3 more sources

Photophysical Properties of New Terbium (III) Organophosphonates [PDF]

Journal of Fluorescence, 2006
This paper reports on the synthesis, characterization and photophysical properties of the Tb3+ organophosphonates, TbH(O3PR)2, methylphosphonate (R = CH3), ethylphosphonate (R = C2H5), propylphosphonate (R = C3H7), and phenylphosphonate (R = C6H5). The layered Tb3+ organophosphonates were characterized by X-ray diffraction, IR spectroscopy, TG and ...
Osvaldo Antonio Serra, Ieda Lúcia Viana Rosa, Cláudio Roberto Neri, Ana Valéria Santos de Lourenço   +3 more
openaire   +2 more sources