960378-45-4Relevant academic research and scientific papers
Cationic aryl complexes of the rare-earth metals
Zeimentz, Peter M.,Okuda, Jun
, p. 6388 - 6396 (2008/10/09)
Neutral rare-earth metal tri(aryl) complexes [Ln(C6H 4-P-R)3(THF)2] (Ln = Lu, Sc; R = H, Me, Et), synthesized by reacting anhydrous metal trichloride with 3 equiv of the corresponding aryllithium, react with 1 or 2 equiv of [NR′3H] [BPh4] (R′ = Et; R′3 = PhMe2) to yield monocationic di(aryl) complexes [Ln(C6H4-P-R) 2(THF)4I+[BPh4]- and dicationic mono(aryl) complexes [Ln(C6H4-p-R)(THF) 5]2+[BPh4]-2, respectively. Single-crystal X-ray diffraction studies of the mono- and dicationic compounds [Sc(C6H5)2(THF)4] +[BPh4]- and [Lu(C6H 5)(THF)5]2+[BPh4]2 - show distorted octahedral coordination geometry around the metal center in the cation. Kinetic studies for the reaction of the dicationic complex [Lu(C6H4-p-Me)(THF)5]2+[BPh 4]2- with pyridine suggest competition between C-H bond activation and insertion reactions.
