235424-48-3Relevant academic research and scientific papers
Derivative chemistry of [Ru2(μ-bdt)(CO)6], a binuclear ruthenium(I) carbonyl complex containing a bridging benzene-1,2-dithiolate ligand
Cabeza,Martinez-Garcia,Riera,Ardura,Garcia-Granda,Van der Maelen
, p. 1133 - 1139 (2007/10/03)
The known dithiolate-bridged ruthenium(I) complex [Ru2(μ-bdt)(CO)6] (1) (bdt = benzene-1,2-dithiolate) has been prepared in fair yield (55percent) by the sequential treatment of RuCl3 · nH20 with carbon monoxide, benzene- 1,2-dithiol and zinc in a one-pot reaction. Complex 1 reacts readily with monodentate phosphanes to give, stepwise, the penta- and tetracarbonyl derivatives [Ru2(μ-bdt)(CO)(6-n)(PR3)(n)] (n = 1, 2; R = Ph, Cy, iPr). However, the reaction of 1 with one equivalent of bis(diphenylphosphanyl)methane (dppm) affords a mixture of complex 1 and the disubstituted derivative [Ru2(μ-bdt)(CO)4(η1-dppm)2], in which the dppm ligands are monodentate. This mixture is subsequently transformed into a polymeric material of formula [{Ru2(μ-bdt)(CO)4}(μ-dppm)](n), which consists of binuclear 9Ru2(μbdt)(CO)4} units linked to each other by bridging dppm ligands. The use of two equivalents of dppm leads to [Ru2(μ- bdt)(CO)4(η1-dppm)2] in quantitative yield. The X-ray diffraction structure of [Ru2(μ-bdt)(CO)4(PiPr3)2] (3c) confirms that the phosphane ligands are located in axial positions, cis to both sulfur atoms, and that the Ru-Ru distance is short [2.6753(7) A?]. A comparative study of the reactivity of complexes 1 and 3c with the electrophiles H+, [Au(PPh3)]+, and HgCl2 has allowed the isolation of the derivatives [Ru2(μH)(μ- bdt)(CO)(6-n(PiPr3)(n)][BF4] (n = 0, 2), [Ru2Au(μ-bdt)(CO)(6- n)(PiPr3)(n)(PPh3)][BF4] (n = 0, 2) and [Ru2HgCl2(μ-bdt)(CO)(6- n)(PiPr3)(n)] (n = 0, 2), respectively.
