Interpenetrating inclusion lattices: Comparison of the β-hydroquinone and ellipsoidal clathrate structures

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Journal Article
Journal of Structural Chemistry, 1999, 40 (5), pp. 663 - 671
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Crystallization of 2,7-dimethyltricyclo[,8]undecane-syn-2,syn-7-diol 2 from acetonitrile or dichloromethane yields the compounds (2)4· (guest) in space group I41/acd which are further examples of the ellipsoidal clathrate structure. Both enantiomers of 2 are linked through (O-H)4cycles of hydrogen bonds to form a three-dimensional sublattice. Two inversion related sublattices interpenetrate thereby generating a superlattice with guest-occupied voids situated between the two individual sublattices. The two X-ray structures are compared and contrasted with that of Powell's (hydroquinone)3· (SO2) clathrate compound.
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