Synthesis and molecular and crystal structure of the octanuclear palladium cluster Pd8(μ3-CO)2(μ2-CO)6(PMe3)7

Syntheses, structures and properties of primarily nanosized homo/heterometallic palladium CO/PR 3 -ligated clusters

“…Xray crystal structures of those with L=PBu . Other neutral representatives of this family, all with L= PMe 3 , are Pd 6 (CO) 4 L 7 (Klein & Mager 1992), Pd 7 (CO) 7 L 7 (Goddard et al 1982) and Pd 8 (CO) 8 L 7 (Bochmann et al 1987).…”

“…Its structural analogue, Pd 10 (CO) 12 L 6 , (L=PEt 3 ), was also obtained in good yield (73%) from the reaction of Pd 2 dba 3 (dba=dibenzylideneacetone) with CO and PEt 3 . Other neutral representatives of this family, all with L= PMe 3 , are Pd 6 (CO) 4 L 7 (Klein & Mager 1992), Pd 7 (CO) 7 L 7 (Goddard et al 1982) and Pd 8 (CO) 8 L 7 (Bochmann et al 1987). (Mednikov et al 2005a).…”

Palladium cluster compounds

“…Tris(dibenzylideneacetone)dipalladium has also been reacted with isocyanides under an inert atmosphere (4~ or under SO2 (41), and with phosphines in the presence of CO (42) A variation on the theme of using unsaturated monomers in the zero oxidation state is to react metal atoms directly with the ligands. In practise this is done by adopting the metal vapour synthesis techniques; two palladium(0) cluster compounds have been synthesized by this method, firstly by palladium deposition into a THF solution of CNCyt49):…”

Synthesis of Well‐Defined Bicapped Octahedral Iron Clusters [(trenL)2Fe8(PMe2Ph)2]n (n=0, −1)

“…This discrepancy may be in part as a result of the geometry restriction imposed by the tren L 8− ligand in contrast to the self‐assembled polycarbonyl clusters, which relax to the respective thermodynamically stable configuration. In fact, there are no reported27 bicapped octahedral molecular clusters for first‐row transition‐metal (TM) homonuclear clusters, though examples with second‐row TM7b, 28 and third‐row TM,24b, 29 as well as one heterobimetallic [Os 6 Pt 2 ] cluster,30 are known. Thus, the ligand framework reported herein allowed us to synthesize octairon clusters with a rare cluster configuration and redox tunability.…”