PolySacDb

Cellulose III₁

.........................................................................................

Fig.1 TOP : synchrotron X-ray diffraction data collected on an on-line MAR image plate from an oriented sample of cellulose III₁ on station ID2A at the ESRF, Grenoble France. BOTTOM : a fit of the top pattern obtained during the measurement of the Bragg intensities and background using software that takes into account fiber texture. Comparison of the top and bottom sections indicates the agreement between observed and measured Bragg intensities.

*Permission Pending for Diffraction Diagrams

Diffraction Diagram

Fig.2 TOP : neutron fiber diffraction patterns collected from oriented samples of cellulose III₁, one hydrogenated (LEFT-HAND QUADRANT) and the other deuterated (RIGHT-HAND QUADRANT). The BOTTOM QUADRANTS show 3D fits of the Bragg intensities using software that takes into account fiber texture. The images in the Cellulose III₁ have been re-mapped into cylindrical reciprocal space with the fiber axis vertical.

*Permission Pending for Diffraction Diagrams

.........................................................................................

Cellulose III₁

Linkage : beta 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) = 4.45 - b (Å) = 7.85 - c (Å) = 10.31 - γ (°) = 105.10 - β (°) = 90.00 - α (°) = 90.00

Helix Type : parallel arrangement, one-chain

Method(s) Used For Structure Determination : X-ray and neutron fiber diffraction

Link to the Abstract : http://pubs.acs.org/doi/abs/10.1021/ma0485585

Reference :

Cellulose IIII Crystal Structure and Hydrogen Bonding by Synchrotron X-ray and Neutron Fiber Diffraction
Masahisa Wada, Henri Chanzy, Yoshiharu Nishiyama and Paul Langan,Macromolecules 2004, 37, 8548-8555

Download Structure

Unit cellulose-III-1_expanded

Polysaccharides For Experts

Cellulose III1

Cellulose III₁