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Cellulose Conformation

  • I. A. Tarchevsky
  • G. N. Marchenko
Part of the Heidelberger Lehrtexte Wirtschaftswissenschaften book series (HLW)

Abstract

Like cyclohexane derivatives, the glucopyranose ring may have the chair or boat conformation [2]. It is generally accepted that the more stable conformation of cyclohexane is the chair one with D3d-symmetry (Fig. II.15). The bonds parallel to the C3-axis are usually called axial (a), those forming a tetrahedral angle with this axis—equatorial (e). The cyclohexane ring actually is not tetrahedral and the endocyclic angle C-C-C seems to be 111.5° (Fig. II.16). With regard to this value the torsion angle C-C-C (ϕ) happens to be 54.5°. The torsion angle between the adjacent axial and equatorial bonds is also 54.5°. Taking into account that the H-C-H angles in cyclohexane are less than tetrahedral the value of the projection angle H-C-H (ω) is accepted as being 118°.

Keywords

Torsion Angle Monomer Unit Stable Conformation Hydroxymethyl Group Cyclohexane Ring 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1991

Authors and Affiliations

  • I. A. Tarchevsky
    • 1
  • G. N. Marchenko
  1. 1.Institute of BiologyUSSR Academy of SciencesKazanUSSR

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