4376-01-6Relevant academic research and scientific papers
Synthesis of 1,3,5,2λ5-triazaphosphinines by intramolecular cyclisation of (N-cyanophosphorimidoyl)guanidines and diguanidinophosphonium chlorides
Inguimbert, Nicolas,Jaeger, Lothar,Taillefer, Marc,Biedermann, Matthias,Cristau, Henri-Jean
, p. 4870 - 4876 (2004)
The sodium phosphonium diylide Na[Ph2P(NCN)2] (3) - the first example of a stabilised phosphonium diylide - was synthesised by treatment of sodium diphenylphosphide with 2 equiv. of cyanic azide. Compound 3 reacted with alkyl- and ar
Synthesis, coordination and extraction properties of 2,3-bis(diphenylphosphoryl)pyridine toward f-block elements
Artyushin, Oleg I.,Brel, Valery K.,Karandashev, Vasilii K.,Turanov, Aleksandr N.,Vologzhanina, Anna V.
, p. 306 - 308 (2021)
2,3-Bis(diphenylphosphoryl)pyridine, a novel N,O-donor bidentate organophosphorus ligand, can serve as an efficient extractant for recovery of f-block elements from nitric acid solutions.
Migration insertion polymerization (MIP) of cyclopentadienyldicarbonyldiphenylphosphinopropyliron (FpP): A new concept for main chain metal-containing polymers (MCPs)
Wang, Xiaosong,Cao, Kai,Liu, Yibo,Tsang, Brian,Liew, Sean
, p. 3399 - 3402 (2013)
We report a conceptually new polymerization technique termed migration insertion polymerization (MIP) for main chain metal-containing polymer (MCP) synthesis. Cyclopentadienyldicarbonyldiphenylphosphinopropyliron (FpP) is synthesized and polymerized via M
Synthesis and solution behaviour of metal-carbonyl amphiphiles with an Fp (CpFe(CO)2) junction
Murshid, Nimer,El-Temtamy, Abdelrahman,Wang, Xiaosong
, p. 40 - 45 (2017)
Metallo-amphiphilic macromolecules with an iron-carbonyl junction (PEGPPh2-FpR, PEGPPh2: polyethylene glycol diphenyl phosphine, Mn, PEG = 550 or 2000 g/mol; R = octadecyl or hexyl; Fp = CpFe(CO)2) are synthesiz
Experimental and theoretical studies of highly emissive dinuclear Cu(i) halide complexes with delayed fluorescence
Kang, Liju,Chen, Jin,Teng, Teng,Chen, Xu-Lin,Yu, Rongmin,Lu, Can-Zhong
, p. 11649 - 11659 (2015)
A series of luminescent homo-dinuclear Cu(i) halide complexes, [PPh2PAr2Cu(μ-X)2CuPPh2PAr2] (X = I (1), Br (2), Cl (3)) (PPh2PAr2 = (1-bis(2-methylphenyl)phosphino-2-diphenylphos
Reductive conversion of phosphoryl P(O) compounds to trivalent organophosphines R3P
Zhang, Jian-Qiu,Han, Li-Biao
supporting information, (2021/02/20)
By introducing trimethylsilyl chloride (TMSCl), the pentavalent phosphoryl P(V) compounds such as triphenylphosphine oxides, secondary phosphine oxides etc., were readily converted to the corresponding R2P(OTMS) intermediates, that can further react efficiently with an electrophile R'X or with a nucleophile R'Li to produce the corresponding trivalent phosphines R2PR’. Chiral phosphines could also be obtained stereospecifically by this strategy.
A Bioinspired Multicomponent Catalytic System for Converting Carbon Dioxide into Methanol Autocatalytically
Rayder, Thomas M.,Adillon, Enric H.,Byers, Jeffery A.,Tsung, Chia-Kuang
supporting information, p. 1742 - 1754 (2020/05/25)
Nature utilizes multicomponent catalyst systems to convert simple, abundant starting materials into complex molecules that are essential for life. In contrast, synthetic chemical transformations rarely adopt this strategy because it is difficult to replicate the sophisticated supramolecular assemblies used by biology for active-site separation and substrate trafficking. Here, we describe a method for multicomponent catalyst separation that involves encapsulating transition-metal complexes in nanoporous materials called metal-organic frameworks. The multicomponent catalyst system was highly active for converting hydrogen and carbon dioxide to methanol, and it could be formulated to be readily recyclable. Moreover, we uncovered an autocatalytic feature that was possible only when we utilized the multicomponent catalyst strategy. These results open avenues for obtaining fuel from abundant and renewable resources. Methanol is a promising renewable fuel that can be adapted to the current liquid fuel infrastructure. It can be produced from hydrogen and carbon dioxide, mitigating greenhouse gas emissions and storing hydrogen in the process. However, the industrial production of methanol through this hydrogenation reaction currently requires elevated temperatures and pressures and can produce significant amounts of unwanted byproducts. Here, we employ a bioinspired tandem catalytic system to efficiently hydrogenate carbon dioxide to methanol selectively at low temperatures. We achieved superior performance by eliminating catalyst incompatibility through encapsulating at least one of the catalysts involved in the tandem process in nanoporous materials called metal-organic frameworks. In the long term, this method could be applied to other tandem catalytic processes, allowing more efficient access to alternative fuels, commodity chemicals, and valuable pharmaceutical products. Tsung and co-workers describe a three-component tandem catalytic process for the hydrogenation of carbon dioxide to methanol. The bioinspired process is enabled by encapsulation of at least one of the two ruthenium-based catalysts required in the metal-organic framework (MOF) UiO-66. The reaction was found to have an autocatalytic feature that enables the reaction to be carried out without superstoichiometric additives. Encapsulating both ruthenium-based catalysts in the MOF allowed the catalyst to be recycled.
Ready Approach to Organophosphines from ArCl via Selective Cleavage of C-P Bonds by Sodium
Ye, Jingjing,Zhang, Jian-Qiu,Saga, Yuta,Onozawa, Shunya,Kobayashi, Shu,Sato, Kazuhiko,Fukaya, Norihisa,Han, Li-Biao
supporting information, p. 2682 - 2694 (2020/07/30)
The preparation, application, and reaction mechanism of sodium phosphide R2PNa and other alkali metal phosphides R2PM (M = Li and K) have been studied. R2PNa could be prepared, accurately and selectively, via the reactions of SD (sodium finely dispersed in mineral oil) with phosphinites R2POR′ and chlorophosphines R2PCl. R2PNa could also be prepared from triarylphosphines and diarylphosphines via the selective cleavage of C-P bonds. Na was superior to Li and K for these reactions. R2PNa reacted with a variety of ArCl to efficiently produce R2PAr. ArCl is superior to ArBr and ArI since they only gave low yields of the products. In addition, Ph2PNa is superior to Ph2PLi and Ph2PK since Ph2PLi did not produce the coupling product with PhCl, while Ph2PK only gave a low yield of the product. An electron-withdrawing group on the benzene ring of ArCl greatly accelerated the reactions with R2PNa, while an alkyl group reduced the reactivity. Vinyl chloride and alkyl chlorides RCl also reacted efficiently. While t-BuCl did not produce the corresponding product, admantyl halides could give the corresponding phosphine in high yields. A wide range of phosphines were prepared by this method from the corresponding chlorides. Unsymmetric phosphines could also be conveniently generated in one pot starting from Ph3P. Chiral phosphines were also obtained in good yields from the reactions of menthyl chlorides with R2PNa. Possible mechanistic pathways were given for the reductive cleavage of R3P by sodium generating R2PNa and the substitution reactions of R2PNa with ArCl generating R2PAr.
Hard-and-soft phosphinoxide receptors for f-element binding: structure and photophysical properties of europium(iii) complexes
Borisova, Nataliya E.,Kharcheva, Anastasia V.,Patsaeva, Svetlana V.,Korotkov, Leonid A.,Bakaev, Sergey,Reshetova, Marina D.,Lyssenko, Konstantin A.,Belova, Elena V.,Myasoedov, Boris F.
, p. 2238 - 2248 (2017/02/26)
New phosphinoyl-containing tetradentate heterocycles preorganised for metal ion binding were designed and prepared in high yields. The X-ray structures of two allied phosphinoyl-bearing 2,2′-bipyridyl and phenanthroline ligands, as well as closely related structures of 2,6-bis(diphenylphosphinoyl)pyridine and 9-(diphenylphosphinoyl)-1,10-phenanthroline-2-one, are reported. Complexes of nitrates of several lanthanides and trifluoroacetate of Eu(iii) with two phosphinoyl-bearing 2,2′-bipyridyl and phenanthroline ligands were isolated and characterised. The first structures of lanthanide complexes with phosphinoyl-bearing 2,2′-bipyridyl and phenanthroline ligands are reported. The nature of the counter-ion is crucial for the coordination environment of the metal ion. The photophysical properties of the complexes differring in both the nature of the ligand and counter-ion were investigated. The photophysical properties of the complexes are strongly ligand- and counter-ion-dependent. Absorbance and luminescence excitation spectra of complexes showed main peaks in the UV range which correspond to the absorption of light by the ligand and these are ligand-dependent. Luminescence spectra of complexes show typical europium emission in the red region with a high quantum yield, which orresponds to the transitions5D0→7FJ (J = 0-6). The value of deviation of the components of5D0 →7F2 and5D0 →7F1 transitions from the inversion centre shows a larger dependence on the counter-ion than on the nature of the ligand. The value of the luminescence quantum yield is larger for europium complexes with 2,2′-bipyridyl-based ligands and NO3 counter-ions than for complexes with phenanthroline-based ligands and NO3 counter-ions. A low dependence of the luminescence lifetime of Eu complexes on the nature of the ligand has been demonstrated: values in the solid state were in the range 1.1-2.0 ms.
Short wave ultraviolet excitation of the high efficiency of the rare earth complex light-emitting material
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Paragraph 0027-0030, (2018/01/05)
The invention discloses a rare earth complex luminescent material based on aromatic heterocyclic carboxylic class three-tooth anionic ligands and preparing method and application thereof. The general formula of rare earth complex is Ln (L)3. The L is 2-ca
