- Dramatic increases in the lifetime of the Er3+ ion in a molecular complex using a perfluorinated imidodiphosphinate sensitizing ligand
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Dramatic increases in the luminescent lifetime of the Er3+ ion in a molecular complex have been observed by chelating the rare-earth ion with a perfluorinated imidodiphosphinate sensitizing ligand, F-tpip. For solution, powder, and evaporated t
- Mancino, Gaetano,Ferguson, Andrew J.,Beeby, Andrew,Long, Nicholas J.,Jones, Tim S.
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Read Online
- Preparation method of sensitizing agent HF20-tpip for visible and infrared emission lanthanide elements
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The invention discloses a preparation method of a sensitizing agent HF20-tpip for visible and infrared emission lanthanide elements. The method includes: taking bromopentafluorobenzene as a starting material, performing Grignard reaction with elementary magnesium in tetrahydrofuran solvent to obtain bromopentafluorobenzene magnesium Grignard reagent solution, directly performing reaction with phosphorus trichloride at a low temperature under nitrogen protection to prepare bis-(pentabromobenzyl)phosphoric chloride, and performing high-vacuum distillation, separation and purification to obtain high-purity bis-(pentabromobenzyl)phosphoric chloride; performing amination reaction with hexamethyldisilazane, and directly adopting an oxidant for oxidation reaction to obtain N-(P,P-bis(pentafluobenzoyl))-P,P-p-(di(pentafluorophenyl)phosphinimidic acid crude product (HF20-tpip, for short). The preparation method is mild in reaction condition, simple and convenient to operate and free of silica gel columns, high-yield high-purity HF20-tpip can be obtained only by adoption of a conventional refining method, and the method is suitable for industrial production.
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Paragraph 0009; 0030-0031; 0035-0036; 0039-0040
(2017/09/01)
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- Convenient methods for the synthesis of a library of hemilabile phosphines
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A series of novel functionalized phosphines of hemilabile character, R 2P(CH2)nZ, have been prepared from diarylphosphines using several synthetic methodologies. The synthetic methods include the alkylation of lithium diar
- Jimenez, M. Victoria,Perez-Torrente, Jesus J.,Bartolome, M. Isabel,Oro, Luis A.
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experimental part
p. 1916 - 1922
(2009/12/28)
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- Electronic Effects in Asymmetric Catalysis: Structural Studies of Precatalysts and Intermediates in Rh-Catalyzed Hydrogenation of Dimethyl Itaconate and Acetamidocinnamic Acid Derivatives Using C2-Symmetric Diarylphosphinite Ligands
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Enantioselectivity of Rh(I)-catalyzed asymmetric hydrogenation of dehydroamino acid derivatives and dimethyl itaconate can be enhanced by the appropriate choice of substituents on the aromatic rings of vicinal diarylphosphinites derived from carbohydrates
- RajanBabu,Radetich, Branko,You, Kamfia K.,Ayers, Timothy A.,Casalnuovo, Albert L.,Calabrese, Joseph C.
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p. 3429 - 3447
(2007/10/03)
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- Some Novel Phosphoranides containing Pentafluorophenyl Groups
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Several novel phosphoranides containing pentafluorophenyl groups, of formulae - (X= Cl, Y= Cl, Br, or I; X= Br, Y= Br or I; X= NCS, Y= Cl, Br, I or NCS) or - (X= Cl, Y= Cl, Br, or I; X= Br, Y= Br or I; X= CN, Y= Cl, Br, I, or NCS) have been identified in solution by means of 31P n.m.r. spectroscopy.Most of the species have been isolated as salts with tetra-alkylammonium ions, and further characterised by elemental analysis and (in some cases) i.r. spectroscopy.These ions -> represent the first simple phosphoranides with an organo-group attached to phosphorus and no cyano-groups present.The species with two pentafluorophenyl groups are the first phosphoranides with two organo-groups directly bound to phosphorus.No acceptor properties towards halide ions were shown by P(CCl3)Cl2 or P(C6F5)2(NCS).
- Ali, Rusmidah,Dillon, Keith B.
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p. 2593 - 2596
(2007/10/02)
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- Hydrogen-1, carbon-13, and phosphorus-31 nuclear magnetic resonance spectral studies of some phenyl- and perflurorphenyl-substituted aminophosphines and aminophosphonium salts
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1H, 13C, and 31P NMR data have been acquired for the aminophosphine (i-C3H7)NHP(C6H5)2, 1, the new aminophosphines (i-C3H7)NHP(C6Fsub
- Cowley, Alan H.,Cushner, Mike,Fild, Manfred,Gibson, J. Andrew
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p. 1851 - 1855
(2008/10/08)
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- Synthesis and characterization of some perfluorophenylphosphine derivatives
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Bis(pentafluorophenyl)chlorophosphine and pentafluorophenyldichlorophosphine are prepared in good yields from pentafluorophenylmagnesium bromide and phosphorus trichloride. The reactions of the halophosphines with the Lewis bases water, ammonia, dimethylamine, and 2-methylaziridine produced substituted phosphines. Oxidative chlorination of bis(pentafluorophenyl)phosphinamide followed by dehydrohalogenation gave perfluorophenylphosphonitriles. The infrared and pertinent proton magnetic resonance spectra of these compounds are discussed.
- Magnelli,Tesi,Lowe Jr.,Mcquistion
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p. 457 - 461
(2008/10/08)
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