The asymmetric unit of the title compound, C(18)H(23)NO(2), consists of two crystallographically independent mol-ecules bearing an adamantane cage consisting of three fused cyclo-hexane rings in almost ideal chair conformations, with C-C-C angles in the range 108.47 (16)-110.59 (15)°. Both aryl rings are essentially planar, the maximum deviation from the best plane being 0.0125 (19) Å. One conformer forms chains parallel to the b axis via N-H⋯O hydrogen bonds, whereas the second exhibits only an intra-molecular N-H⋯O hydrogen bond. The crystal structure is stabilized by further weak N-H⋯O and N-H⋯N inter-actions.
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| http://dx.doi.org/10.1107/S1600536810047276 | DOI Listing |
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