Phosphines amination

The organometalhc approach allows control of the surface. It is therefore possible to prepare species displaying a clean surface able to adsorb small molecules (CO, H2) or large Hgands (phosphines, amines, thiols, polyden-tate ligands, etc.). 

Thiols, Phosphines, Amines, and Silanes. With these ligands, ethanol addition clearly gives a precipitate that can be isolated and readily redispersed in toluene or any other non-polar solvent again. 

The THT ligand in [AuRX2(THT)] and in other complexes can be displaced easily for other neutral or anionic ligands (e.g., phosphine, amines, halide, etc.), and a wide variety of derivatives... 

A variety of basic (nucleophilic) initiators have been used to initiate anionic polymerization [Bywater, 1975, 1976, 1985 Fontanille, 1989 Hsieh and Quirk, 1996 Morton, 1983 Morton and Fetters, 1977 Quirk, 1995, 1998, 2002 Richards, 1979 Szwarc, 1983 Young et al., 1984]. These include covalent or ionic metal amides such as NaNFU and LiN(C2H5)2, alkoxides, hydroxides, cyanides, phosphines, amines, and organometallic compounds such as n-C4H9Li and <)>MgBr. Initiation involves the addition to monomer of a nucleophile (base), either a neutral (B ) or negative (B ) species. 

The reactions of iridium olefin complexes are not restricted to reactions with phosphines. Amines have also employed in bridge-splitting and substitution reactions with [Ir(COD)Cl]2, especially chelating diamines. The reactions proceed to yield [Ir(COD)N-N]2 compounds. A fertile chemical area involves the irw(pyrazolyl)borate (see Tris(pyrazolyl)borates) family of compounds with the monoethylene and bisethylene complexes serving as reactive entries in this field. ... 

A kinetic investigation (12) of olefin replacement in (olefin)-Mn(CO)2(C6H5) by a ligand L [L = phosphine, amine, or (C8H6)2S] shows that the rate is independent of L and indicates an 1 reaction with... 

There is one further area in which the properties of olefin-metal complexes and adsorbed olefins show common behavior. The olefin is often readily displaced by diolefins and alkynes many other ligands, including phosphines, amines, nitriles, cyanide ion, and carbon monoxide, can however cause olefin displacement, and these include molecules which are notorious catalyst poisons. Again no quantitative information is available, but a causal connection is strongly suggested. 

HYBRID TERTIARY PHOSPHINE AMINE AND AMIDE CHELATE LIGANDS N-[2-(DIPHENYLPHOSPHINO)-PHENYLJBENZAMIDE AND 2-(DIPHENYLPHOSPHINO)-yV-PHENYLBENZAMIDE... 

Hybrid Tertiary Phosphine Amine and Amide Chelate Ligands 323... 

Besides the numerous studies already mentioned on the reactions of [Mn(R)(CO)5] with phosphines, amines, isocyanides, and carbon monoxide, there have been extensive investigations into the reactions of [Mn(R)(CO)5] compounds with other neutral donor ligands. A brief description of these now follows. 

V, Nb, Ta, Cr, Mo, W, Sn, Mn, Re, Fe, Co, and Ni. Halcon patents [59] describe catalyst systems containing Zr, Mo/Ni, or Sn/Ni as synergistic co-catalysts. Furthermore, metals of Group VIII combined with Hf, phosphines, amines, or arsines, as promoter additives, have been reported [60]. 

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