Results 141 to 150 of about 2,501 (172)

Bis(difluoroaluminum)organophosphonates and difluoroaluminumdiorganophosphinates

Journal of Polymer Science: Polymer Chemistry Edition, 1984
AbstractOligomers and polymers of the general types [RR′P(O)OA1F2]n, I, and [F2AlOP(R)(O)OAlF2]n, II, were prepared by the addition of phosphonic or phosphinic acids and hydrogen fluoride to etherated alanes. The hydrocarbon moieties (R,R′) on the phosphonic and phosphinic acids were important determinants of physical and chemical properties.
Edward E. Flagg, Donald L. Schmidt
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SYNTHESIS OF POLYFUNCTIONAL ORGANOPHOSPHONATE LIGANDS

Solvent Extraction and Ion Exchange, 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.
R.T. Paine, G.S. Conary, A.A. Russell, D.J. McCabe, E.N. Duesler, S. Karthikeyan, R. Schaeffer, R.R. Ryan, D. Cromer   +8 more
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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
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Functional Organophosphonate Interfaces for Nanotechnology: A Review

ACS Applied Materials & Interfaces, 2017
Optimization of interfaces in inorganic-organic device systems depends strongly on understanding both the molecular processes that are involved in surface modification and the effects that such modifications have on the electronic states of the material.
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Acetylcholinesterase mutants: oxime-assisted catalytic scavengers of organophosphonates.

Chemico-biological interactions, 2004
instead abstract, part of the Introduction: Reaction of organophosphonates with acetylcholinesterase (AChE ; EC 3.1.1.7) is characterized by the formation of serine-conjugated adducts that are only slowly reversible. Since oximes are the only known antidote to nerve agent poisoning that restore the activity of AChE, mutagenesis of AChE should enable ...
Kovarik, Zrinka, Radić, Zoran, Simeon, Vera, Reiner, Elsa, Taylor, Palmer   +4 more
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Validating the alkene and alkyne hydrophosphonylation as an entry to organophosphonates

Organic & Biomolecular Chemistry, 2015
The hydrophosphonylation of terminal alkenes and alkynes by H-phosphonates affords Markovnikov and/or anti-Markovnikov adducts depending on the catalyst (a metal or a radical initiator) and the reaction conditions.
Alessandro, Dondoni, Alberto, Marra
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Organophosphonic acids as drug candidates

Expert Opinion on Therapeutic Patents, 2006
The discovery of phosphate mimetics that are suitable as drug candidates has been a challenging problem faced by medicinal chemists for many years. Several series of organophosphonic acids have been identified as phosphate mimetics and have resulted in multiple development candidates progressing to the clinic and even successfully reaching the market ...
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Organophosphonate derivatives of titanium and niobium alkoxoanions

Journal of Organometallic Chemistry, 1998
The organophosphonate-substituted alkoxides [Bu4nN]2[{Ti(OMe)3(O3PPh)}2] (1) and [Bu4nN]2[{Nb(OMe)3(O3PPh)}2(μ-O)] (2) were prepd. from [Bu4nN][PhPO3H] and the metal alkoxides Ti(OMe)4 or Nb(OMe)5 resp. 1 And 2 were characterized by x-ray crystallog. (1·PhMe: monoclinic, space group C2, R = 0.0449; 2: monoclinic, space group P21/n, R = 0.0452).
Errington, R John, Ridland, John, Willett, Kathryn J, Clegg, William, Coxall, Robert A, Heath, Sarah L; id_orcid 0000-0002-8342-3732   +5 more
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Radical-based dephosphorylation and organophosphonate biodegradation

Journal of the American Chemical Society, 1987
Products resulting from the degradation of organophosphonates by Escherichia coli are identified and used as a basis for evaluating mechanisms which may be the chemical basis of the biodegradation. One mechanistic hypothesis which is consistent with the biodegradation products involves radical-based dephosphorylation.
J. W. Frost, S. Loo, M. L. Cordeiro, D. Li   +3 more
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The first lanthanide organophosphonate nanosheet by exfoliation of layered compounds

Chem. Commun., 2013
Lanthanum 1,3,5-benzenetriphosphonate (LBP-II) with layered structure was obtained by a hydrothermal synthesis. LBP-II was successfully exfoliated to give nanosheets as confirmed by AFM observation. Europium or terbium-doped LBP-II as well as their dispersion solutions show photoluminescence.
Takahiro, Araki, Atsushi, Kondo, Kazuyuki, Maeda   +2 more
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