EXAFS studies of the activation of homogeneous nickel catalysts for propene dimerisation by aluminium reagents
Abstract
Ni K-edge EXAFS studies on propene dimerisation catalysts, formed by the interaction of solutions of NiCl2(PEt3)2 with Al2Me3Cl3 and AlEt3 at –40 °C, indicate a first coordination sphere of C and P atoms; Ni‥Al shells at ca. 2.97 Å suggest Ni–C–Al interactions which probably stabilise the nickel centre.