Komplexkatalyse: XXXV. η 3,η 2,η 2-Dodeca-2( E),6( E),10( Z),trien-1-yl-nickel(II)-hexafluorophosphat und -hexafluoroantimonat als hoch aktive Katalysatoren für die 1,4- cis-Polymerisation des Butadiens

Abstract

By partial protolysis of η 3,η 2,η 3-dodeca-2( Z),6( E),10( Z)-trien-1,12-diylnickel(II) with hexafluorophosphoric and hexafluoroantimonic acid the complexes given in the title were prepared. Structure and coordination of the C 12-chain could be elucidated NMR-spectroscopically and a rapid anti—syn isomerization proceeding already at deep temperature could be proved. In agreement with the reaction mechanism for the allyl nickel complex catalyzed butadiene polymerization derived by us both complexes catalyse the 1,4- cis-polymerization with very high activity.