The Mechanism of Ziegler-Natta Polymerization of Acetylene: A Nutation NMR Study.

Abstract

Using nutation NMR spectroscopy the distance between adjacent 13C labels was measured in samples of polyacetylene prepared by polymerizing a dilute solution of double 13C-labelled acetylene in 12C-acetylene using titanium tetra-n-butoxide plus triethylaluminum as a catalyst. The experiments accord with expectation if the polymerization proceeds by a four-center insertion mechanism rather than by a metallacycle mechanism involving metal-carbenes. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 09, 1983
Accession Number
ADA137089

Entities

People

  • C. S. Yannoni
  • T. C. Clarke
  • T. J. Katz

Organizations

  • Columbia University

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acetylenes
  • Alkynes
  • California
  • Carbon Carbon Composites
  • Catalysts
  • Chemistry
  • Engineering
  • Massachusetts
  • Materials
  • Materials Engineering
  • Materials Science
  • Military Research
  • New York
  • Polymeric Films
  • Polymers
  • Spectra
  • United States

Fields of Study

  • Chemistry

Readers

  • Astronomy and Astrophysics.
  • Organic Chemistry
  • Polymer Science and Technology