Ethylene Insertion with Soluble Ziegler Catalysts: Direct Insight into the Reaction Using Enriched 13C2 H4 and 13C NMR Spectroscopy II. The System Cp2TiMeCl/AlMeCl2/13C2H4

Gerhard Fink; Wolfgang Fenzl; Richard Mynott

doi:10.1515/znb-1985-0204

Open Access Published by De Gruyter June 2, 2014

Ethylene Insertion with Soluble Ziegler Catalysts: Direct Insight into the Reaction Using Enriched ¹³C₂ H₄ and ¹³C NMR Spectroscopy II. The System Cp₂TiMeCl/AlMeCl₂/¹³C₂H₄

Gerhard Fink , Wolfgang Fenzl and Richard Mynott

From the journal Zeitschrift für Naturforschung B

https://doi.org/10.1515/znb-1985-0204

Abstract

The elementary processes involved in the polymerization of ethylene by soluble Ziegler catalysts of the type Cp₂TiMeCl/AlMeCl₂ have been studied by ¹³C NMR spectroscopy. Using ¹³C-enriched ethylene, detailed information was obtained directly on the system in the course of the polymerization. No spectroscopic evidence was found for precoordination of the monomer. The development of the oligomer distribution, which could be followed spectroscopically, proves that the mechanism proposed by Olivé cannot be correct. These experiments show conclusively that the ethylene is inserted into the titanium-carbon bond.

Keywords: Ziegler Catalysis; Ethylene Insertion. 13C NMR Spectra

Received: 1984-10-25

Published Online: 2014-6-2

Published in Print: 1985-2-1

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Ethylene Insertion with Soluble Ziegler Catalysts: Direct Insight into the Reaction Using Enriched ¹³C₂ H₄ and ¹³C NMR Spectroscopy II. The System Cp₂TiMeCl/AlMeCl₂/¹³C₂H₄

Abstract

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