OLEFIN OLIGOMERIZATION WITH NICKEL PO CHELATE COMPLEXES

被引：122
作者：
HIROSE, K [1 ]
KEIM, W [1 ]
机构：
[1] RHEIN WESTFAL TH AACHEN,INST TECHN CHEM & PETROLCHEM,LEHRSTUHL TECHN CHEM & PETROLCHEM,W-5100 AACHEN,GERMANY
来源：
JOURNAL OF MOLECULAR CATALYSIS | 1992年 / 73卷 / 03期
关键词：
D O I：
10.1016/0304-5102(92)80081-Q
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Various alpha-keto ylides were reacted in situ with (COD)2Ni and the solutions obtained were applied in ethylene oligomerization/polymerization. It could be shown that changes in substituents of the Arc PO chelate Part drastically influence the product distribution of the oligomers/polymers. In the case of MePh2PCHCOPh, EtPh2PCHCOPh, and CyPh2PCHCOPh, the maximum molecular weight occurs at about 2.8 (logarithm scale). However, in the case of nMenPh2PCHCOPh, it occurs at 3.3. The molecular-weight dispersions (M(w)BAR/M(n)BAR) increase in the following order: RPh2PCHCOPh: R = Me < R = Et < R = Cy < R = nMen In this way a handle via the Arc PO-ligand is given to tailor the steepness of the Schulz-Flory type distribution.
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页码：271 / 276
页数：6
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