Continuous diffuse scattering from polymethylene chains – an electron 
diffraction study of crystalline disorder

Dorset, Douglas L.; Hu, Hengliang; Jäger, Joachim

doi:10.1107/S0108767391003823

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Continuous diffuse scattering from polymethylene chains – an electron diffraction study of crystalline disorder

MPS-Authors

/persons/resource/persons21668

Jäger, Joachim
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Dorset, D. L., Hu, H., & Jäger, J. (1991). Continuous diffuse scattering from polymethylene chains – an electron diffraction study of crystalline disorder. Acta Crystallographica Section A, 47(5), 543-549. doi:10.1107/S0108767391003823.

Cite as: https://hdl.handle.net/21.11116/0000-0009-1EFC-B

Abstract

Continuous diffuse scattering is noted in electron diffraction patterns from polymethylene compounds such as n-paraffins and polyethylene. In a Projection down the chain axes, experimentally produced by solution crystallization, The diffuse scatter in hk0 patterns disappears at low temperature, in accord with a thermal-diffuse-scattering model, which explains the intensity distribution and its temperature dependence. For a projection onto the chain axes, experimentally achieved by epitaxic orientation on benzoic acid crystals, the 0kl, as well as 3D projections, contain diffuse scatter which does not disappear at low temperature. Its origin appears to be due to frozen-in longitudinal chain static displacements, perhaps as much as 0.25 Å, as indicated by a model for this disorder.