Structure Determination of the Macromonomer Poly (1,11 - Dodecadiyne) and Its Crosspolymerized Product.

Abstract

Electron diffraction patterns were obtained from the macromonomer and cross-polymerized crystals of Poly(1,11 Dodecadiyne). The macromonomer was cast in thin (< 200 A) films from chloroform solution. Crosspolymerization resulted from subsequent exposure of these samples to Co60 - gamma radiation. Two orientations of the crosspolymerized crystals were obtained by varying the evaporation rate of solvent in the original macromonomer diposition. Thirty-six reflections for the crosspolymerized sample and eighteen reflections for the macromonomer were obtained. Refinement of the structures was accomplished with these data. The unit cell of both macromonomer and crosspolymerized material was monoclinic, space group P2 sub 1 1n.

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Document Details

Document Type
Technical Report
Publication Date
Jun 27, 1982
Accession Number
ADA111661

Entities

People

  • Jerome B. Lando
  • Meghna Thakur

Organizations

  • Case Western Reserve University

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  • Air Platforms

DTIC Thesaurus Topics

  • Alkynes
  • Cells
  • Crystal Structure
  • Crystals
  • Diffraction
  • Diffraction Analysis
  • Dihedral Angle
  • Electron Beams
  • Electron Diffraction
  • Electron Microscopes
  • Electrons
  • Gamma Rays
  • Materials
  • Military Research
  • Radiation
  • United States
  • X Rays

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  • Chemistry

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