organic compounds
The title compound, C17H22O3, which was synthesized by the condensation of cyclohexane-1,3-dione and n-valeraldehyde, includes a partially hydrogenated xanthene ring system. The molecule has crystallographic mirror symmetry. The central ring adopts a very shallow boat conformation while the symmetry-related outer six-membered rings have sofa conformations. Molecules form extended tapes in the c-axis direction though weak C—HO interactions.
organic compounds
The 2-amino-4,6-diphenyl-4H-1,3-oxazinium trifluoroacetate ion pairs in the title compound, C16H15N2O+·C2F3O2−, are held together by two N—HO hydrogen bonds [Namino—HO and Noxazinium—HO], and adjacent ion pairs are linked into helical chains by a third and substantially weaker Namino—HO hydrogen bond.