Analysis of the crystal structure of poly(ethylene sulfide) by electron diffraction

Abstract

Abstract The crystal structure of poly(ethylene sulfide) has been determined by electron diffraction. The analysis was based on the combined use of single crystal and fiber diffraction data. The refined structure consists of chains with glide symmetry, and is in essential agreement with a model previously determined by x-ray diffraction. A test for the validity of a kinematic approximation to the electron scattering, based on the conservation of chain symmetry, is introduced.