Phosphorus donor ligands

Phosphorus very readily forms complexes with iron carbonyl fragments to give mono- and disubstituted Fe(CO)4L and Fe(CO)3L2 complexes. These are common derivatives to prepare and may be made directly from Fe(CO)s or from the higher nuclearity carbonyls Fe2(CO)9 or Fc3(CO)i2. Dinuclear Fc2(CO)9 is not known to be soluble in any common organic solvents with retention of its composition but it does dissolve in coordinating solvents, THF being 

The interaction of 5-block metals and phosphorus-based ligands takes many forms, from neutral phosphines and anionic diphosphides [PR] , to mixed (P,N) and (P,S) donors. The area has been one of intensive investigation, and there is praetieal interest in the use of sueh eompounds in organophosphorus synthesis. The area has witnessed eonsiderable growth prior to 1985, fewer than five eompounds containing an 5-block element bonded to phosphorus had been strueturally authentieated by the end of 2000, the total was over 200. Extensive reviews of the area have 

Disubstituted phosphido ligands [PRR ] have been incorporated into numerous i-block complexes. Many examples are known, and are covered in detail in the previously cited reviews only 

A general synthetic route has been reported for a wide range of trialkyl phosphite complexes of noble metals, including the unstable white [RhLj] [L = P(OMe)3 or P(OEt)3]. Subsequent studies have shown that the former complex reacts with NOPFg in dichloromethane to give the hydride [RhH- P(OMe)3 5](PF6)2 in high yield. 

The addition reaction of normal, triplet dioxygen to Vaska s complex, fra/is-Ir(CO)Cl(PPh3)2, has been well studied (126,127). The kinetics 

In general, the oxidation of primary alcohols to carboxylic acids using T)2-dioxygen metal complexes is rare. To our knowledge, only one report (134) communicates such a process. 

An unusual peroxo-bridged binuclear iridium complex containing an Ir—Ir bond has been reported (135a, 135b). The reaction of the electron- 

The reaction of 36 with carbon monoxide results in the formation of the neutral [Ira CO C/ -COX/ -C Xdppm ] 39, which, according to an X-ray crystallographic analysis, no longer contains an Ir—Ir bond [the M-M separation is 3.388(2) ]. This compound may be the first example of a compound that contains a five-membered metallocycle in which the -02- unit and the carbonyl unit are both bridging. 

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Organometallic intramolecular coordination compounds containing a phosphorus donor ligand. I. Omae, Coord. Chem. Rev., 1980, 32, 235-271 (168). 

Complexes with miscellaneous phosphorus donor ligands 509... 

Complexes with diphosphenes, phosphabenzene, biphosphinine, and other unsaturated phosphorus donor ligands... 

Platinum(O) Complexes with Phosphorus Donor Ligands 674... 

Phosphorus donor ligands. A general synthesis has been reported for cationic... 

The reliable prediction of redox potentials as a function of composition is useful in the synthetic design and application of technetium and other transition metal complexes. A parametric procedure for doing so on the basis of ligand additivity principles has been developed by Lever [28]. Lu etal. [29] used this scheme to correlateTc / ",Tc "/ , andTc hi potentials with the composition of octahedral technetium complexes containing halide, nitrogen, and phosphorus donor ligands. The results are illustrated in Fig. 2 [29], where the observed potentials are plotted according to... 

Bis-(3,5-di-tert-butyl-l,2,4-triphospholyl)-bis(triethylphosphine)-digold(I) [36] contains an anionic phosphorus donor ligand. In the crystal structure the cation [bis-(triethylphosphine)gold(I)]+andthe anion[bis(3,5-tert-butyl-l,2,4-triphospholyl) aurate(I)]- associate in pairs through gold-gold interactions. 

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