140164-92-7Relevant academic research and scientific papers
Cluster chemistry. XC. Some complexes obtained from reactions between M3(CO)12 (M = Ru or Os) or Ru3(μ-dppm)(CO)10 and 2-substituted triphenylphosphines and related keto-phosphine ligands
Adams, Chris J.,Bruce, Michael I.,Duckworth, Paul A.,Humphrey, Paul A.,Kuehl, Olaf,et al.
, p. 251 - 282 (2007/10/02)
Several complexes of the type M3Ln have been prepared and their reactions studied.Predominant were H-migrations from the aryl substituent X to cluster; less facile were C-C bond cleavage reactions, and P-C bond cleavages were not observed.Under the conditions used, the complexes Ru3(CO)11 were transient intermediates in the formation of Ru3(μ-H)(CO)9; the analogous Ru3(μ-dppm) and Os3(μ-dppm) complexes were more robust.Similar reactions were found for clusters made by reaction of Ru3(CO)12 and related complexes with PPh2, in which H-migration from the ligand to the cluster results in formation of a phosphino-enolate system.X-ray structures are reported for the complexes Os3(CO)11 , Ru3(μ-dppm)(CO)9 , Ru3(μ-H)(CO)9 , Ru3(μ-H)>(μ-dppm)(CO)7, Ru3(μ-H)(μ-dppm)(CO)7 and Os3(μ-H)(CO)9. Key words: Ruthenium; Osmium; Carbonyl; Functional phosphines
Complexes with functional phosphines. XVII. Synthesis and characterization of ruthenium clusters with ketophosphine ligands. Crystal structure of the cluster 1(O):η2(P,O)-O(CPh)CHPPh2>(CO)9 containing a bridging phosphinoenolate ligand
Braunstein, Pierre,Cea, Silverio Coco,Bruce, Michael I.,Skelton, Brian W.,White, Allan H.
, p. C38 - C42 (2007/10/02)
Reactions of the ketophosphine Ph2PCH2C(O)Ph(P-O) with afforde the derivatives (1) and (4).In the presence of triphenylphosphiniminium acetate (PPN)(OAc), the former leads to the labile >> (2), in which the functional phosphine acts as a (P,O) bridging ligand, whereas thermal activation of either 1 or 4 results in PC-H bond cleavage and formation of 1(O):η2(P,O)-O(CPh)-CHPPh2>(CO)9> (3) whose crystal structure reveals an unprecedented bonding mode fr the phosphinoenolate ligand, its oxygen atom bridging the Ru(1)-Ru(2) edge.Protonation of this complex occurs selectively at the enolato-carbon and (CO)10>BF4 (5) and 2(CO)8>BF4 (7) were characterized in which the ligand(s) bridge between two Ru centres.
