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Updated: Oct 3, 2026

Ethylene Polymerizations Using Parallel Pressure Reactors and a Kinetic Analysis of Chain Transfer Polymerization
Published on: November 27, 2015
Transformations of F-Alkyl Iodides and Bromides Induced by Nickel(0) Carbonyl
Carl G. Krespan1, David A. Dixon
1Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, P.O. Box 999 K1-83, Richland, Washington 99352.
Abstract:
Adducts of primary F-alkyl iodides with nickel carbonyl are formed readily in donor solvents and pyrolyze at 100-150 degrees C to give olefinic coupling products in high yield. The mechanism proposed to account for the observed chemistry involves preferential alpha-elimination of fluorine with formation of a carbenoid species complex coordinated to nickel. Differences in reaction paths among several types of substrate halides are rationalized on the basis of polarization of the Ni-C bond in the adducts. Support for these proposals is provided by state-of-the-art calculations.
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