Polymerizations of Acetylenes and Cyclic Olefins Induced by Metal-Carbynes.

Abstract

Trans-(bromotetracarbonyl(phenylmethylidyne)tungsten) and related metal-carbynes induce acetylenes and cycloalkenes to polymerize. The acetylenes include examples that are monosubstituted, disubstituted, and unsubstituted, as well as the first reported functionalized acetylenes in which the functional groups (the nitrile, ester, and halogen functions were studied) are not attached to the triple bond. The cycloalkenes yield polyalkenamers whose double bonds are largely cis. This last polymerization is speeded by the presence of oxygen. The stereochemistries of the polyacetylenes and the polynorborneamer produced when the initiator is the metal-carbyne are similar to those of the polymers produced when the initiator is pentacarbonyl(methoxyphenylmethylene) tungsten. A possible mechanism is presented to account for why the metal-carbynes behave as though they were sources of reactive metal-carbenes. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 09, 1983
Accession Number
ADA137090

Entities

People

  • N. Shih
  • T. H. Ho
  • T. J. Katz
  • V. I. W. Stuart
  • Y. Ying

Organizations

  • Columbia University

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alkenes
  • Alkynes
  • Chemical Synthesis
  • Chemistry
  • Cyclic Hydrocarbons
  • Materials
  • Materials Engineering
  • Materials Science
  • Military Research
  • Organic Chemistry
  • Plastic Explosives

Fields of Study

  • Chemistry

Readers

  • Organic Chemistry