The stereochemistry and conformation of lignin as judged by X-ray crystallographic investigations of lignin model compounds: Arylglycerol β-guaiacyl ethers
Journal article, 2007

The conformation of a variety of crystalline lignin models representing different diastereomeric forms of structural elements in lignin of the arylglycerol β-guaiacyl ether type has been studied using X-ray crystallography. Based on X-ray crystallographic data sequences of units attached to each other by β-guaiacyl ether linkages were constructed. The appearance of the resulting oligomers shows that stereoisomerism can be expected to influence the shape of the lignin molecules to a great extent. The constructed oligomers provide an idea about the contribution to the complexity of lignins by stereochemistry alone. It is proposed that structural differences together with stereochemical and conformational variations are the main reasons for the broadness of the signals in NMR spectra of lignins.

crystallography

conformation

-guaiacyl ethers

lignin

arylglycerol &beta

Author

Vratislav Langer

Chalmers, Chemical and Biological Engineering, Environmental Inorganic Chemistry

Knut Lundquist

Chalmers, Chemical and Biological Engineering, Forest Products and Chemical Engineering

Jim Parkås

Chalmers, Chemical and Biological Engineering, Forest Products and Chemical Engineering

BioResources

1930-2126 (ISSN)

Vol. 2 4 590-597

Subject Categories

Wood Science

Biological Sciences

Organic Chemistry

More information

Created

10/6/2017