235424-55-2Relevant academic research and scientific papers
Ruthenium complexes containing bridging dppm and benzene-1,2-dithiolato ligands: X-ray crystal structure of [Ru2(CO)4{μ- S(C6H4)S}(μ-dppm)]
Begum, Noorjahan,Hyder, Iqbal,Kabir, Shariff E.,Kundu, Kalipada
, p. 521 - 525 (2007/10/03)
The reaction of benzene-1,2-dithiol with [Ru3(CO) 10(μ-dppm)] 1 in refluxing THF afforded two new compounds [Ru 2(CO)4{μ-S(C6H4)S} (μ-dppm)] 2 and [Ru3(CO)8{μ-S(C6H4)S} (μ-dppm)] 3 which were characterized by elemental analysis, infrared, 1H and 31P{1H} NMR and mass spectra. The structure of 2 was determined by single crystal X-ray diffraction analysis. The compound crystallizes in the monoclinic space group P21/n, with a=10.3133(2), b=16.9806(3), c=19.5605(3) A, α=90, β=100.2298(11), γ=90°, V=3371.10(10) A3 and Z=4. Both Ru atoms are in distorted octahedral geometry. For each ruthenium, two CO groups in cis positions, one bridged S atom arid the other bonded Ru atom occupy the equatorial sites, and the other bridged S atom and a P atom of the bridging dppm ligand are in trans positions on the meridional axis. Of the two S atoms, one lies in the Ru2P2 plane while the other is perpendicular to this plane, thus making them nonequivalent but keeping the two P atoms of the bridging dppm ligand identical. The 50-electron compound 3 contains a doubly briddging dithiolato and a bridging dppm ligand. Protonation of 2 with trifluroacetic acid results in the formation of the cationic hydrido species [(μ-H)Ru2(CO)4 {μ-S(C6H 4)S} (μ-dppm)]+ which has been characterized by spectroscopic data.
