Palladium cluster compounds

A ladder polysilane as a template for folding palladium nanosheets

“…S9) and 2.6168(12)-2.8779(12) Å for III ( Supplementary Fig. S10), which are comparable to those found in previously reported polynuclear palladium clusters, including planar triangular or tetranuclear clusters [23][24][25][26][27][28][29][30][31] . Two Si atoms derived from the silylene moiety (Si(1) and Si(2)) are located on the edge of Pd 7 sheets I and III (Fig.…”

DFT Study of Small Palladium Clusters Pdn and Their Interaction with a CO Ligand (n = 1–9)

“…Note finally that low coordination modes (µ 1 and µ 2 ) are expected with the increasing number of ligands. This can be proven experimentally [3] and theoretically. [15] Regarding the CO ligand, its physicochemical characteristics, bond length (d Pd-CO ) and stretching vibration (ν CO ), are consistent with the coordination mode and are generally independent of the number of palladium atoms in the clusters.…”

“…The choice of the carbonyl ligand is justified by the fact that it is commonly used in the synthesis of palladium clusters. [3] In addition to this, smaller systems (Pd, Pd 2 and Pd 3 ) may serve as models to study the adsorption of the ligand on a vertex, an edge and a face of palladium clusters, respectively. If a large number of theoretical papers are already devoted to the study of these compounds, they generally focus on the determination of the geometry of the ground state.…”

“…The latter allows an easier structural characterization, resting on conventional analytical techniques such as IR and NMR spectroscopy or X-ray crystallography. [3] This work has focused on a detailed theoretical study of palladium clusters with a nuclearity ranging from 2 to 9 (Pd n ; n = 2-9) and on their interaction with a π-acceptor ligand, in this case CO (Pd n CO). The choice of the carbonyl ligand is justified by the fact that it is commonly used in the synthesis of palladium clusters.…”

The synthesis of platinum and palladium cluster compounds with isocyanide or functionalised phosphine ligands. Crystal structures of [Pt5(CO)(?-CO)5{Ph2PCH2C(O) Ph}4 and [Pt5(?-CNC6H3Me2-2, 6)3(CNC6H3Me2-2, 6)5 {Ph2PCH2C(O) Ph}2]

“…Such compounds can be readily prepared by reduction of mononuclear platinum(II) species such as [PtC12(NCMe)2]. In palladium cluster chemistry some carbonyl phosphine clusters of the type [ 3 : 3 : 4 ], [ 4: 5 : 4 ] and [10:12:6] have been prepared from reduction of palladium(II) acetate and are well characterized [ 6]. Another class of cluster compounds contains SO, in place of CO: for platinum only the triangulo-species [3 : 3:3] have been documented [7], whereas for palladium the pentanuclear compounds [Pd5(/./3-SO2) 2 (,/1-SO2) 2 (PR3)5] (R=alkyl, aryl) [5:4:5] are weil known, being readily synthesized from the palladium(0) species [Pd2(dba)3] .CHCI 3 [8], In this paper, we report the syntheses and properties of pentaplatinum carbonyl cluster compounds formed reductively and pentapalladium sulfur dioxide complexes formed from [Pd2(dba)3].CHCl~ both with fl-ketophosphines.…”