5758-24-7Relevant articles and documents
Raman Spectra and Isomerism of Some Bromophenylphosphoranes PhnPBr(5-n) (1
Al-Juboori, Mohammad A. H. A.,Gates, Peter N.,Muir, Alan S.
, p. 1441 - 1444 (1994)
A synthetic and Raman investigation of isomerism in the bromophenylphosphoranes has shown no evidence for ionic-covalent isomerism analogous to that in the chlorophenylphosphoranes.Two ionic modifications of PhPBr4 have been identified by Raman spectrosco
The structure of R3PBr2 compounds in the solid state and in solution; geometrical dependence on R, the crystal structures of tetrahedral ionic Et3PBr2 and molecular trigonal bipyramidal (C6F5
Godfrey, Stephen M.,McAuliffe, Charles A.,Mushtaq, Imran,Pritchard, Robin G.,Sheffield, Joanne M.
, p. 3815 - 3818 (1998)
Twenty-one triorganophosphorus dibromide compounds, R3PBr2 (R3 = substituted aryl, mixed aryl-alkyl, triaryl or trialkyl) have been synthesized from diethyl ether solution and characterised by analytical and 31P
ACRYLAMI DE PHOTOI NI TI ATORS
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Page/Page column 12, (2018/10/25)
Acrylamide photoinitiators are provided, in which a photoinitiator moiety and an acrylamide are incorporated into the photoinitiator structure.
Highly efficient P-N nickel(II) complexes for the dimerisation of ethylene
Buchard, Antoine,Auffrant, Audrey,Klemps, Christian,Vu-Do, Laurence,Boubekeur, Leila,Goff, Xavier F. Le,Floch, Pascal Le
, p. 1502 - 1504 (2008/02/04)
New P-N ligands featuring a phosphino group and an iminophosphorane moiety were successfully employed in the nickel-catalysed dimerisation of ethylene. The Royal Society of Chemistry.
Controlled formation of tetramethylammonium mono- and diylide
Cristau, Henri-Jean,Plenat, Francoise,Bayssade, Sylvie
, p. 29 - 33 (2007/10/03)
The reaction of tetramethylammonium bromide with n -butyllithium can selectively yield either trimethylammonium methylide or lithium dimethylammonium dimethylide, depending on the reaction conditions, as shown by 13C-NMR analysis of the deuterium-labelled species resulting from acidic trapping with DCl. So a simple synthesis of mono- or twice-functionalised methylammonium salts is allowed from a very usual starting material.
Complexes of N-aryltriphenylphosphinimines with mercury(II) halides
Braun, Thomas P.,Gutsch, Paul A.,Zimmer, Hans
, p. 858 - 862 (2007/10/03)
The synthesis IR and 31P NMR spectra of the complexes of various N-aryltriphenylphosphinimines with some mercury dihalides as well as the corresponding phosphonium salts are reported It is shown by an X-ray crystal structure analysis of the complex of the unsubstituted phosphinimine with HgCl2 that in the solid state these complexes form dimers via two Hg...μ2 Cl...Hg bridges.
Solvent and Counterion Effects on the Stereochemistry and the Competition between Electron-Transfer and SN2 Mechanisms in the Reaction of (Trimethylstannyl)alkalies with Bromides
Alnajjar, Mikhail S.,Kuivila, Henry G.
, p. 416 - 423 (2007/10/02)
Recations of (trimethylstannyl)alkalies (Me3SnM, M=Li, Na, K) with bromides have been studied in solvents including tetraglyme and tetrahydrofuran, in mixtures of tetrahydrofuran with ether and with benzene, and with added crown ether, 18-C-6.Product distributions and stereochemistry have been examined.Dicyclohexylphosphine (DCPH) was used as a trap for intermediate free radicals to detect participation of an electron-transfer (ET) process which occurs in competition with the SN2 mechanism.The effect of the nature of the cation on the course of the reaction depends upon the medium.The effects is not usually in simple relation to the size of the cation.The SN2 mechanism competes most effectively in a good coordinating medium but is not the exclusive one with 2-bromooctane even in THF containing 18-C-6.In the poorly coordinating mixed solvents, 2-bromooctane reacts virtually exclusively by an ET process.Even the primary 1-bromooctane and 6-bromo-1-hexene show ET contributions in the mixed solvents of low cation coordinating ability.In the latter case the ET component was established both by DCPH trapping experiments and by formation of the cyclic substitution product, (cyclopentylmethyl)trimethylstannane.The mechanistic implications of these and other observations are examined.
