Nutation NMR Studies of Polyacetylene.

Abstract

Using nutation NMR spectroscopy we have been able to determine directly the carbon-carbon bond lengths in polyacetylene. For trans-polyacetylene we find double and single bond lengths of 1.36 and 1.44 angstrons, respectively; the double bond in cis-polyacetylene is found to be 1.38 angstrons. Interestingly, at 77 degrees K we do not observe a rapid interchange of the single and double bonds in trans-polyacetylene in the manner predicted for chains containing a soliton defect, suggesting that the majority of the carbons in the trans isomer are on conjugated segments which do not contain such mobile species. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 07, 1983
Accession Number
ADA129487

Entities

People

  • C. S. Yannoni
  • R. D. Kendrick
  • T. C. Clarke

Organizations

  • International Business Machines Corporation (Armonk, NY)

Tags

DTIC Thesaurus Topics

  • Acetylenes
  • Alkynes
  • California
  • Carbon Carbon Composites
  • Chemical Compounds
  • Chemistry
  • Conductive Polymers
  • Films
  • Isomerization
  • Materials
  • Military Research
  • Polymers
  • Spectra
  • Splitting
  • United States
  • United States Government
  • X Rays

Fields of Study

  • Chemistry

Readers

  • Materials Science and Engineering.
  • Organic Chemistry