Über die katalytische Umwandlung von Olefinen, VIII „Nacktes“ Nickel als Katalysator bei der Umalkylierung von Aluminiumtrialkylen mit α-Olefinen/ The Catalytic Conversion of Olefins, VIII „Naked“-Nickel as a Catalyst for the Transalkylation of Aluminium Trialkyls with α-Olefins

Abstract

Abstract Nickel(0)-olefin complexes such as tris(ethylene)nickel(0) (4), tris(bicycloheptene)nickel(0) (6 ), all-transcyclododecatriene)nickel(0) (26), tris(stilbene)nickel(0) (27) and bis(cyclooctadiene) nickel(0) (23) are highly active homogeneous catalysts for the transalkylation of aluminium trialkyls with α-olefins. After com pletion of the reaction the nickel(O) can be rem oved in the form of Ni(CO) 4 by reaction with CO. Characteristic for the catalytic reaction is the formation of olefin-nickel-π-bonds and Ni -C -Al multi-centre-bonds. The mechanism o f the reaction is discussed with the help of m odels.