1002107-07-4Relevant academic research and scientific papers
Syntheses, structures and redox properties of some complexes containing the Os(dppe)Cp* fragment, including [{Os(dppe)Cp*}2(μ- CCCC)]
Bruce, Michael I.,Costuas, Karine,Davin, Thomas,Halet, Jean-Francois,Kramarczuk, Kathy A.,Low, Paul J.,Nicholson, Brian K.,Perkins, Gary J.,Roberts, Rachel L.,Skelton, Brian W.,Smith, Mark E.,White, Allan H.
, p. 5387 - 5399 (2008/09/17)
The sequential conversion of [OsBr(cod)Cp*] (9) to [OsBr(dppe)Cp*] (10), [Os(CCH2)(dppe)Cp*]PF6 ([11]PF6), [Os(CCH)(dppe)Cp*] (12), [{Os(dppe)Cp*} 2{μ-(CCH-CHC)}][PF6]2 ([13](PF 6)2) and finally [{Os(dppe)Cp*}2(μ- CCCC)] (14) has been used to make the third member of the triad [{M(dppe)Cp*}2(μ-CCCC)] (M = Fe, Ru, Os). The molecular structures of [11]PF6, 12 and 14, together with those of the related osmium complexes [Os(NCMe)(dppe)Cp*]PF6 ([15]PF6) and [Os(CCPh)(dppe)Cp*] (16), have been determined by single-crystal X-ray diffraction studies. Comparison of the redox properties of 14 with those of its iron and ruthenium congeners shows that the first oxidation potential E 1 varies as: Fe ≈ Os a five-membered series of redox related complexes [{M(dppe)Cp*}2(μ-C 4)]n+ (n = 0, 1, 2, 3 and 4), the osmium derivatives being obtained at considerably lower potentials than the ruthenium analogues. These results are complimented by DFT and DT DFT calculations. The Royal Society of Chemistry.
