Phosphine, dimethyl

In contrast to the reaction of hexafluoropropene with phosphine, dimethyl-phosphine affords not the 1 1 adduct but a mixture of pentafluoropropenylphos-phines [9] (equation 6)... 

Propylamine, 3 chloro A, TV dimethyl ], hydrochloride, 55, 128 1-PROP AN AMINE, 3,3 -(phenylphosphini-denc)bis(A, A -dimethyl)- [Phosphine, phenyl-, bis(3-dimethylammopro-... 

The structure of [IrCl2(edmp)2]PF6, (193), edmp = (2-aminoethyl)dimethyl phosphine, confirms that the coordination geometry around the Ir center is approximately octahedral. If the edmp ligand is replaced by edpp, edpp = (2-aminoethyl)diphenylphosphine, then the isomeric form (194) may be isolated and structurally characterized. The X-ray crystal structure of fac-[Ir(edmp)3]Cl3 5H20 has also been reported.338... 

The residual pasty solid was purified by column chromatography over silica gel (//-hexane ethyl acetate = 8 1) to afford tert-butyl (dimethyl)phosphine-borane (1) 5.29 g (86 %) as white crystals. 

Tetraphenylcyclopent-3-enone and dimethyl phosphonate are the major products from the base-catalysed reaction of methyl phosphonate with tetra-cyclone.75 A mechanism involving initial hydride transfer from dimethyl phosphinate anion to the ketone followed by kinetically controlled protonation to give (98) is suggested. 

Nickel, dichloro [ethylenebis(dimethyl-phosphine)], 58, 133 Nickel, dichloro[ethj lenebis(diphenyl-phosphine)], 58,133 [Ni (-)-diop Cl2 ], (-)-diop=2,3-0-iso-propylidene-2,3-dihydroxy-l,4-bis(di-phenylphosphino)butane, 58, 133 Nickel, dichloro [ trimethylenebis(diphenyl-phosphine)], 58,133 NITRILES, alkylation of, 55, 91 NITRILES FROM KETONES, 58, 101 NITRILES, a vinyl, 55, 99, 101 p-Nitrobenzenesulfonyl cyanide, 57, 89 p-Nitrobenzyl alcohol, 57, 72 p-NITROBENZYL FLUORIDE, 57, 72 Nitro compounds, 56, 36 Nitronates, 56, 36... 

G.S. Denisov, K.G. Tokhadze, Ultrastrong hydrogen bond in gas phase. Dimer of dimethyl -phosphinic acid. Dokl. Phys. Chem. 337, 117-119 (1994)... 

Both methylphosphine (this synthesis) and dimethylphosphine (the following synthesis) are considerably stronger Lewis bases than phosphine, and their reactions with various Lewis acids, including boranes, have been the subject of recent studies. Both methylphosphine and dimethylphosphine are readily oxidized by air, and thus can serve as sources of methylphos-phonous (methylphosphinic) acid, CH3PHO(OH), and dimethyl-phosphinic acid, (CH3)2PO(OH). ... 

For asymmetric hydrosilylation of ketones a rhodium complex coordinated with the ferrocenyl(dimethyl)phosphine 3b has been reported to be more effective than other ferrocenylphosphines to give optically active alcohols (up to 49% ee) after hydrolysis (Scheme 2-49) [7]. 

The reaction is not restricted to phosphorus, silicon, and boron compounds the tetrameric (NSEt) is, for instance, formed from ethylamine hydrochloride and sulfur dichloride (49). Nor is it restricted to nitrogen compounds the very stable cyclic phosphinoborines are formed by elimination of hydrogen from the dimethyl-phosphine borine complex (17). 

IrCI02P4C jH32, Iridium(l-t-), (carbon-diox-ide)bis[ 1,2-ethanediyIbis(dimethyl-phosphine)]-, chloride, 21 100... 

Phosphorus nuclear magnetic shielding anisotropy in (1-hydroxyalkyl)dimethyl-phosphine sulfides has been studied using the IGLO method, and the tautomeric stability, molecular structure, and internal rotation of methylphosphonic dicyanide MeP(0)(CN)2, dicyanomethoxyphosphine MeOP(CN)2, and their isocyano analogues have been extensively followed using ab initio calculations. ... 

To demonstrate the applicability of the criterion, given by Eqs (5.8) - (5.10), Ay(t )-values of aqueous solutions containing decyl dimethyl phosphine oxide as the main component and dodecyl dimethyl phosphine oxide as the simulated impurity were measured. The results, shown in Fig. 5.4, confirm that the assumption works well. 

Comparison of theoretical (lines) and experimental results (symbols) for a system containing decyl dimethyl phosphine oxide as main component and dodecyl dimethyl phosphine oxide as... 

Fig. 6.13 shows the agreement between the elasticity modulus, derived form the adsorption isotherm and from relaxation experiments with n-dodecyl dimethyl phosphine oxide solutions. 

Fig. 6.13 Dilational elasticity modulus of n-dodecyl dimethyl phosphine oxide determined for oscillating bubble experiments ( ), and calculated from the adsorption isotherm ( ) according to Wantke etal.(1993)...

The dynamics of mixtures of surfactants with proteins is of great importance for many practical processes, such as coating of photographic films, where gelatine in mixtures with surfactants and surface active dyes adsorb at the interface. Hempt et al. (1985) studied the relaxation behaviour of gelatine solutions in presence and absence of surfactants (SDS, tetradecyl dimethyl phosphine oxide, cetyltrimethyl ammonium bromide, n-decanoic acid, perfluoro octanoic acid tetraethyl ammonium salt). 

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