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Dppe ligand

The electrocatalytic properties of several parent dinitrogen or hydrazido-containing molybdenum and tungsten complexes with dppe ligand have also been investigated. Each of these complexes yielded NH3, in chemical yields which ranged from 1% to 36% per mole of complex.318... [Pg.490]

H2, it does readily occur upon photolysis to generate [ReH-(dppe) ] as a very reactive photoproduct (13). As detailed below, this species rapidly adds substrate molecules (N, CO, C2H2, C H, and CO ) and inserts into C-H bonds of benzene solvent and the phenyl groups of the dppe ligands. [Pg.348]

For this case, we refer to literature reports concerning the reduction of cis-(CO)2Mn(r 2-dppe)2+, in which dppe = bis(diphenylphosphino)ethane [25]. This molecule has a cathodic wave of two-electron height at approximately -1.8 V vs. SCE (Fig. 23.21, peak 1). The major electrolysis product was identified as (CO)2Mn(ri2-dppe)(ri1-dppe), in which one of the dppe ligands is partially dissociated from the metal, as shown. [Pg.714]

The overall ECE process of Equations 23.34-23.36 was implicated, with the intervening chemical reaction (Eq. 23.35) being the partial dissociation of one dppe ligand ... [Pg.714]

Labeling the two isomers of the Mn system by the hapticity (number of ligating atoms) of the dppe ligand, the relevant homogeneous reaction to consider is that of Equation 23.37 ... [Pg.716]

This complex shows no ligand exchange either with triphenylphos-phine or with excess dppe. The lack of affinity for CO and the strong binding preventing dppe dissociation may explain the sharply reduced activity of this catalyst at very low CO partial pressure (<1 atm) in a large excess of the dppe ligand. [Pg.65]

SCHEME 16. Reactions of [Mo(Nt/ ))(dppe)2] (dppe ligands omitted for clarity). [Pg.253]

Infrared- and 57Fe-Mossbauer-spectral studies indicated that substitution in these derivatives occurs exclusively at cobalt, with one ligand per cobalt atom in the trisubstituted derivatives (54). Only with the chelating dppe ligand was a tetrasubstituted product formed, Eq. (74). [Pg.250]

Group 8. The iron complexes [ Cp L2Fe 2(p-C=CC=C)] [L2 = dppe (107), dippe (99)] are characterized by a series of three one-electron oxidation processes (L2 = dppe,258,269,270 dippe258). Substitution of the dppe ligand for dippe results in positive shifts of the three electrode potentials by 0.29, 0.14, and 0.14 V respectively, and that the difference between these processes increases with increasing electron density at the metal centers. [Pg.295]


See other pages where Dppe ligand is mentioned: [Pg.293]    [Pg.345]    [Pg.64]    [Pg.387]    [Pg.42]    [Pg.382]    [Pg.81]    [Pg.159]    [Pg.759]    [Pg.198]    [Pg.349]    [Pg.350]    [Pg.350]    [Pg.353]    [Pg.366]    [Pg.33]    [Pg.249]    [Pg.357]    [Pg.33]    [Pg.218]    [Pg.292]    [Pg.24]    [Pg.109]    [Pg.406]    [Pg.443]    [Pg.196]    [Pg.360]    [Pg.1337]    [Pg.287]    [Pg.227]    [Pg.2100]    [Pg.191]    [Pg.250]    [Pg.33]    [Pg.38]    [Pg.193]    [Pg.68]    [Pg.181]    [Pg.183]    [Pg.306]    [Pg.134]    [Pg.376]   
See also in sourсe #XX -- [ Pg.157 , Pg.336 , Pg.528 ]




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DPPES

Dppe

Dppe bidentate ligand

With dppe bidentate ligand

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