Acta Cryst. (2008). E64, o1078-o1079  [ doi:10.1107/S1600536808013652 ]

(-)-N,N'-Bis[(1S,2R,5S)-6,6-dimethyl-bicyclo[3.1.1]heptan-2-ylmethyl]pyridine-2,6-dicarboxamide monohydrate

S. Bernès, F. J. Pérez-Flores and R. Gutiérrez

Abstract: The title compound, C₂₇H₃₉N₃O₂·H₂O, is a chiral pyridine-2,6-dicarboxamide derivative including cis-myrtanyl groups as amine substituents. The pyridine-2,6-dicarboxamide core approximates C₂ point symmetry and a solvent water molecule lies on the pseudo-twofold axis. The water molecule serves both as acceptor and donor for efficient hydrogen bonds involving N-H and C=O functional groups as donor and acceptor groups, respectively. As a result, each water molecule in the crystal structure is tetrahedrally bonded to three symmetry-related molecules, forming a three-dimensional supramolecular network. Such an arrangement is a common feature found in the majority of X-ray-characterized symmetrically substituted pyridine-2,6-dicarboxamide derivatives.

Online 14 May 2008

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