Bis(aminophoshonium) salts derived from bis(diphenylphosphino)methane were prepared and triply deprotonated with potassium hexamethyldisilazane to yield the corresponding bis(iminophosphoranyl)methanides, which were then subjected to coordination with CrIIICl3(THF)3. Binuclear complexes of type [(HC(PPh2NR)2Cr([small mu ]-Cl)(Cl))2] (R = iPr, tBu) with an octahedral coordination geometry and a long C-Cr bond were obtained and structurally characterized. In the case of R = o-MeO-C6H4, a monomeric species featuring no C-Cr bond is observed. Preliminary evaluation of catalytic activities of these complexes in ethylene oligomerization and polymerization is reported.
|Number of pages||5|
|Journal||New Journal of Chemistry|
|Early online date||16 Jun 2009|
|Publication status||Published - 2009|