Abstract
PROGRESS in the detailed analysis of carbohydrate crystal structures has hitherto been slow, on account of the lack of guidance from physical (optical and magnetic) properties of the crystals, the wide choice of molecular conformations on which trial and error calculations might be based, the absence of outstandingly strong reflection intensities, and the asymmetry of the compounds concerned. The isomorphism of a-chitosamine hydrochloride and hydrobromide has now enabled us to determine the positions of all the atoms (other than hydrogen) in the crystal lattices of these substances by synthetic methods alone, no stereochemical assumptions being necessary.
Published Version
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