Oh the mechanism of stereoregulation in the allylnickel complex catalyzed butadiene polymerization |
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Authors: | Rudolf Taube,Jö rg-Peter Gehrke,Udo Schmidt |
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Abstract: | After a brief account of the present knowledge on the mechanism of the allylnickel complex catalyzed stereospecific butadiene polymerization, synthesis and catalytic properties of the cationic allylnickel(II) complexes, [C3H5NiL2]PF6 (L = P(OAlk)3, P(OAr)3, PPh3, AsPh3, SbPh3, MeCN, Me3CNC, 1,5–COD), are described. From kinetic and 31P-NMR spectroscopic investigations, especially with [C3H5Ni(P(OPh)3)2]PF6 as a typical trans-catalyst, the definite course of the catalytic stereoregulation has been elucidated. |
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