919536-98-4Relevant academic research and scientific papers
Dinuclear palladium(II) compounds with bridging cyclometalated phosphines. Synthesis, crystal structure and electrochemical study
Koshevoy, Igor O.,Lahuerta, Pascual,Sanau, Mercedes,Ubeda, M. Angeles,Domenech, Antonio
, p. 5536 - 5541 (2007/10/03)
The structural characterization of bis-cyclometalated palladium(ii) compounds of formula Pd2[(-(C6X4)PPh 2]2(-O2CR)2 [X = H, R = CH 3 (3), CF3 (4), C(CH3)3 (5) and C6F5 (6); X = F, R = CH3 (7) and CF 3(8)], has confirmed its paddle wheel structure with two palladium atoms bridged by two acetates and two metalated phosphines in a head-to-tail arrangement. The Pd...Pd distances are in the range 2.6779(16)-2.7229(8) A. Under cyclic voltammetric conditions, compounds 3-6, in CH 2Cl2 solution, were found to undergo a reversible oxidation peak in the range of potential values 0.84-1.25 V. A second partially-reversible oxidation is observed at more positive potentials (1.37-1.55 V). For compounds 3-5 in the presence of chlorides, the first oxidation becomes a two-electron process presumably leading to a neutral [Pd(iii)-Pd(iii)] species with a metal-metal bond. The Royal Society of Chemistry 2006.
