A series of triiron clusters[Fe_(3)(CO)_(5)(κ^(2)-dppe)(μ-pdt^(R_(2)))(μ-pdt)]featuring different combinations of dithiolate bridges have been prepared by using dinuclear and mononuclear precursors,[Fe_(2)(CO)_(6)(...A series of triiron clusters[Fe_(3)(CO)_(5)(κ^(2)-dppe)(μ-pdt^(R_(2)))(μ-pdt)]featuring different combinations of dithiolate bridges have been prepared by using dinuclear and mononuclear precursors,[Fe_(2)(CO)_(6)(μ-xdt)](xdt=pdt,pdt^(Et_(2)),pdt^(Bn_(2)),adt^(Bn))and[Fe(CO)_(2)(κ^(2)-dppe)(κ^(2)-pdt)].Novel triiron compounds,featuring sterically crowded dithiolate bridges(pdt^(Et_(2)),pdt^(Bn_(2))),were spectroscopically and structurally characterized.Their protonation and redox behaviours are discussed.The effect of the dithiolate bridges on the electrochemical properties(oxidation and reduction)of the complexes[Fe_(3)(CO)_(5)(κ^(2)-dppe)(μ-xdt)(μ-pdt)]has been examined by cyclic voltammetry and rationalized by DFT calculations.Studies on the protonation of these species and their proton reduction behaviour were considered.展开更多
基金CNRS(Centre National de la Recherche Scientifique),the University of Brest,and the University of Milano-Bicocca are acknowledged for financial support。
文摘A series of triiron clusters[Fe_(3)(CO)_(5)(κ^(2)-dppe)(μ-pdt^(R_(2)))(μ-pdt)]featuring different combinations of dithiolate bridges have been prepared by using dinuclear and mononuclear precursors,[Fe_(2)(CO)_(6)(μ-xdt)](xdt=pdt,pdt^(Et_(2)),pdt^(Bn_(2)),adt^(Bn))and[Fe(CO)_(2)(κ^(2)-dppe)(κ^(2)-pdt)].Novel triiron compounds,featuring sterically crowded dithiolate bridges(pdt^(Et_(2)),pdt^(Bn_(2))),were spectroscopically and structurally characterized.Their protonation and redox behaviours are discussed.The effect of the dithiolate bridges on the electrochemical properties(oxidation and reduction)of the complexes[Fe_(3)(CO)_(5)(κ^(2)-dppe)(μ-xdt)(μ-pdt)]has been examined by cyclic voltammetry and rationalized by DFT calculations.Studies on the protonation of these species and their proton reduction behaviour were considered.
