155229-47-3Relevant academic research and scientific papers
New Multihydride Complexes of Rhenium containing Diphosphine Ligands: Low-temperature Protonation of
Fontaine, Xavier L. R.,Layzell, Timothy P.,Shaw, Bernard L.
, p. 917 - 924 (2007/10/02)
Treatment of oxochloro complexes of the type (L-L = diphosphine) with sodium tetrahydroborate gave complexes of the type .Treatment of with triphenylphosphine gave a mixture of the pentahydride and the trihydride .However, treatment of 1a with dppm in refluxing toluene, followed by slow crystallisation, gave which was isolated and characterised by variable-temperature NMR spectroscopy.Prolonged heating of 1a with dppm gave the trihydride , the fluxionality of which was studied by NMR spectroscopy between +90 and -70 deg C.Protonation of 1a with HBF4*Et2O, at -80 deg C, gave a complex formulated as 2-H2)(dppen-PP')>(1+) which, on warming to ambient temperature, was cleanly converted to a dirhenium multihydrate species tentatively formulated as on the basis of IR and NMR evidence.
