Diphosphine bridge binuclear complexes

Catty AJ, Efraty A (1%9) Coordination complexes of acetylene diphosphines. I. diphosphine-bridged binuclear copper(l) and gold(I) complexes of bis(diphenylphosphino)acety lene. Inorg Chem 8 543-550... 

It is also possible for the anion to coordinate in similar complexes to give three-coordinate gold(I) centres in (41)371-373 in which the diphosphines bridge between gold(I) centres, or in (39) and (42) in which the diphosphines chelate.356,374 In the binuclear complex (41a) the AuAu separation is only 296 pm.371... 

The dehalogenation by Fe2(CO)9 of binuclear arene ruthenium(II) derivatives 293 and 296 depends on the nature of the bridging diphosphine. With Ph2PCH2CH2PPh2, complexes with Ru2Fe [294 (20%)] and Ru3 [295 (12%)] are formed. With Ph2PCH2PPh2 complete dehalogenation is favored, and complexes 297 (37%) and 298 (15%) are obtained. The X-ray structure of the latter shows that the phosphorus ligand is located almost in the Ru3 plane (169) [Eqs. (37) and (38)]. 

In the following sections, binuclear complexes of rhodium bridged by one or two diphosphine ligands, which are active for the hydrogenation or... 

The structures of binuclear, diphosphine-bridged complexes of various metals, including rhodium, are discussed in more detail in Chapter 5. 

Zero-valent binuclear nickel complexes bridged by diphosphine ligands exhibit interesting ligand- and metal-centered chemistry.They have been used as starting complexes to form nickel clusters." The synthesis of Ni2(CO)3(dppm)2 was first reported in 1988. ... 

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