ISSN:
0018-019X
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Mixtures of π-cyclobutadiene-nickeldihalides and LEWIS acids such as Al(R)nCl3-n,, n = 1-2, represent very active homogeneous catalysts for dimerization of mono-olefins. As active cocatalyst may be used LEWIS bases, in particular compounds containing three-coordinated phosselectivity of the catalytic system has been investigated. The kinetics of the dimerization-reaction is outlined.The mechanisms of the olefin-dimerization is best characterized as a «double-cis-insertionreaction». The main catalytic activity is thought to be connected either to free positively charged nickel cations or to bimetallic nickel-aluminium-complexes, depending on theconditions of reaction, in particular the amount and chemical nature of the cocatalyst.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/hlca.19690520123
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