Dextran (high T polymorph)

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  Dextran (high T polymorph)

Linkage : alpha 1-6      alpha 1-4

Space Group : monoclinic P21

Unit Cell Dimensions (a, b, c in Å and α, β, γ in °)

(No values are displayed if no information is available or the value is zero)

a (Å) = 9.22 - b (Å) = 9.22 - c (Å) = 7.78 - β (°) = 91.30

Helix Type : Two antiparallel-packed molecular chains

Method(s) Used For Structure Determination : X-ray fibre diffraction, electron diffraction and stereochemical model refinement

Link to the Abstract : http://pubs.acs.org/doi/abs/10.1021/ma00131a017

Reference :

Molecular and crystal structure of dextrans: a combined electron and x-ray diffraction study. 1. The anhydrous, high-temperature polymorph
Guizard, C., Chanzy, H. and Sarko, A., Macromolecules 1984, 17, 100-107

 

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Unit          dextran-highT-anhyd_expanded