Describe the mechanism by which stereoregular polyolefins are formed in heterogeneous coordination polymerization. Complete the reaction scheme below, showing initiation, propagation and transfer to monomer steps in the synthesis of isotactic polypropylene. The catalyst, R-MLn, represents a crystalline organometallic compound, where M is a metal atom with a vacant d-orbital, R is an alkyl group directly attached to the metal atom; and Ln represents a halide ligand set. Assume all chain ends are terminated by transfer to monomer. R-MLn +

Describe the mechanism by which stereoregular polyolefins are formed in heterogeneous coordination polymerization. Complete the reaction scheme below, showing initiation, propagation and transfer to monomer steps in the synthesis of isotactic polypropylene. The catalyst, R-MLn, represents a crystalline organometallic compound, where M is a metal atom with a vacant d-orbital, R is an alkyl group directly attached to the metal atom; and Ln represents a halide ligand set. Assume all chain ends are terminated by transfer to monomer. R-MLn +

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter23: Carbon: Not Just Another Element

Section: Chapter Questions

Problem 4PS

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