Figure 8
Possible hydrogen-bonding arrangements in the center of a molecular stack in the 1:1 compound of cis and trans 2,3-tetralindiol when both enantiomers of the latter can be present. Atoms C2, C3 and C4 are shown, as is one or both of the O atoms attached to C3. Gray lines indicated possible hydrogen bonds as identified in the fully disordered structure. (a) All possible positions of the hydroxyl O atoms attached to C3 are shown. (b) Hydrogen-bonding arrangement that would occur in the fully ordered compound between cis-2,3-tetralindiol and one of the pure enatiomers of trans-2,3-tetralindiol. (c) Hydrogen-bonding arrangement that could occur in a region in which R,R-2,3-tetralindiol molecules are replaced by the cis isomer, and the cis isomer is replaced by the S,S enantiomer. |