15729-44-9Relevant academic research and scientific papers
13C and 31P NMR Studies of Some Aminophosphonium Chlorides
Krannich, Larry K.,Kanjolia, Ravindra K.,Watkins, Charles L.
, p. 320 - 324 (1987)
The multinuclear NMR spectral data for an homologous series of tertiary phosphines R(3-n)P(NMe2)(n), aminophosphonium ions, (+), and phosphonium ions, (+), where R=Me, Et, (n)-Pr and Ph, R' and/or R''=H, Me and n=0 and 1 are reported and discussed.Quaternization by alkylation or alkylation or chloramination causes an increase in the 31P chemical shift (ΔδP is positive), a decrease in the 13C chemical shift (ΔδC is negative) for all carbons, an increase in the magnitudes of 1J(PC), 3J(PC), 3J(PNCH) and 2J(PCH) and a decrease in the magnitude of 2J(PC).Substitution of a Me2N group for an alkyl or aryl group produces an increase in the 31P chemical shift and in the magnitude of 1J(PC). α- and β-deshielding and γ-shielding effects are noted in the 13C NMR spectra and β-deshielding and γ-shielding effects are noted in the 31P NMR spectra with substitution on the phosphorus and nitrogen atoms. - Key words: 13C NMR, 31P NMR, Tertiary phosphines, Aminophosphonium ions, Phosphonium ions
A synthetic cycle for nitrogen atom transfer featuring a diruthenium nitride intermediate
Corcos, Amanda R.,Long, Amanda Kae Musch,Guzei, Ilia A.,Berry, John F.
, p. 3808 - 3811 (2013)
A new Ru2 azido complex, [Ru2(chp)4N 3](4, chp = 2-chloro-6-hydroxypyridinate), was investigated under photolytic conditions to study the chemical reactivity of the corresponding Ru2 nitride species, [Ru2(chp)4N](6), towards intermolecular N atom transfer to triphenylphosphane (PPh3). Photolysis of a dichloromethane solution of 4 at γ > 350 nm leads to a characteristic color change from purple to magenta. Upon acidic workup, triphenylphosphanamine chloride ([H2NPPh3]Cl) is produced and [Ru 2(chp)4Cl](5), the precursor to 4, is regenerated. The first stoichiometric cycle for intermolecular N atom transfer from a Ru 2 nitride is thus presented.
An Unaspected Synthesis of Tripheriylphosphazenium Chloride, [(C6H5)3PNH2]+Cl -, and a Redetermination of its Crystal Structure
Vogt,Fischer,Jones
, p. 865 - 868 (1996)
Triphenylphosphazenium chloride has been prepared by the reaction of triphenylphosphine with trimethylsilylazide in impure, wet dichloromethane. Yields arc improved as stoichiometric quantities of water are added. Colourless crystals are obtained by recry
Efficient phosphorus catalysts for the halogen-exchange (Halex) reaction
Lacour, Marie-Agnes,Zablocka, Maria,Duhayon, Carine,Majoral, Jean-Pierre,Taillefer, Marc
supporting information; experimental part, p. 2677 - 2682 (2009/10/20)
New families of monomeric to dendritic, and monocationic to multicationic (PNP) compounds have been prepared and tested as catalysts in halogen exchange (Halex) reactions. Some of them allow an increase in the efficiency of these reactions which are performed in some cases under the mildest conditions reported up to now.
A new and convenient method for the synthesis of strong non-ionic bases
Taillefer, Marc,Rahier, Nicolas,Hameau, Aurelien,Volle, Jean-Noel
, p. 3238 - 3239 (2008/09/20)
Various strong non-ionic phosphazene bases were obtained by a new, efficient and very simple method involving the lithium phosphonium azayldiide Ph3P=NLi (2) as a precursor. The Royal Society of Chemistry 2006.
Studies on electrochemical and coordination behaviour of phosphiniminocyclotrithiazenes
Swarnalatha,Sivaramakrishna,Venkatachalam,Rao, M.N. Sudheendra,Inoue, Tomonori,Ueda, Tadaharu,Hojo, Masashi
, p. 1428 - 1434 (2007/10/03)
Electrochemical (polarographic, cyclic voltammetric, and coulometric) and coordination behaviour of several symmetrically and unsymmetrically substituted phosphiniminocyclotrithiazenes have been studied. Polarograms of R3PN-S3N3 R = C6H5, p-ClC6H4, p-H3CC6H4, and (OC4H8N)), Ph2OC4H8N)PN-S3N3, and Ph(OC4H8N)2PN-S3N3 give two cathodic waves. Cyclic voltammograms of Ph3PN-S3N3 (1) and (OC4H8N)3PN-S3N3 (2) reveal nearly the same oxidation peak potential but different reduction potentials. Controlled potential electrolysis of 1 and 2 at +0.6 V indicates exocyclic cleavage and ring degradation. Cathodic reduction behaviour of Ph3PN-S3N3 suggests the possibility for the) formation of 1,5-(Ph)3(PN)2S4N4 under electrochemical conditions. Reaction of nickel chloride hexahydrate with heterocycle 1 in 1:2 molar ratio in acetonitrile affords the complex, ([NiS2N2H2] (A) (90% yield) and [Ph3PNH2]Cl salt as products. Analogous reactions with other ligands of this type (two symmetrical (sym.) and three unsymmetrical (unsym.)) except 2 also give A, while ligand 2 reacts with anhyd NiCl2 in an equimolar ratio to afford a dark green, square-planar complex ((OC4H8N)3(PN-S3(N·NiCl 2 (B)) whose ESCA results assist in providing its coordination details. The study reveals a high tendency of these heterocycles to different types of ring cleavage.
PHOSPHONIUM DIAZA-DIYLIDS AND AZA-YLDIID AS NEW AND EFFICIENT REAGENTS FOR PRIMARY AND SECONDARY AMINES SYNTHESIS
Cristau, Henri-Jean,Garcia, Chantal,Kadoura, Jumah,Torreilles, Eliane
, p. 151 - 154 (2007/10/02)
Metallated aminophosphonium ylids, diaza-diylids and aza-yldiid, are investigated as reagents for primary and secondary amines synthesis.
Reaction of Trithiazyl Trichloride, (NSCl)3, with Triphenylphosphine or Triphenylphosphine Metal Complexes. X-Ray Crystal Structure of Aminotriphenylphosphonium Chloride-Dichloromethane (1/1), Cl*CH2Cl2
Hursthouse, Michael B.,Walker, Nigel P. C.,Warrens, Christopher P.,Woollins, J. Derek
, p. 1043 - 1048 (2007/10/02)
The reaction between (NSCl)3 and gives together with Cl*CH2Cl2 (2) (characterised by X-ray crystallography, 31P n.m.r. and i.r. spectroscopy) and Ph3PNH (4).Reaction between (NSCl)3 and PPh3 also gives (2) and (4); a mechanism for this reaction is proposed.Reactions of (NSCl)3 with , trans-, or were investigated by 31P n.m.r. and contrary to several previous reports do not give thionitrosyl complexes but rather result in the formation of (2) and (4) or in the oxidation of the material to .The existence of any rhodium phosphine thionitrosyls is thus cast into doubt.
