organic compounds
Open access
In the title compound, C15H25NO2, all three six-membered rings adopt chair conformations. The cyclohexane and piperidine rings within the perhydroisoquinoline are trans–trans fused. The N atom has a trigonal–pyramidal geometry (the sum of the bond angles is 328.0°). The methyl substituent occupies the sterically preferrable equatorial position. In the crystal, molecules form infinite [100] chains via O—HN hydrogen bonds.
organic compounds
Open access
The title compound, C16H12NOSSe+·HSO4−, was obtained from a mixture of 3-(4-methoxyphenyl)[1,3]selenazolo[2,3-b][1,3]benzothiazol-4-ium chloride and potassium hydrogen sulfate. In the cation, the benzene ring is twisted by 71.62 (7)° from the tricycle mean plane. In the crystal, O—HO hydrogen bonds link the anions into chains along [100]. The anions in adjacent chains are linked via weak C—HO hydrogen bonds. The crystal packing exhibits short intermolecular contacts between the chalcogen unit and the O atoms: SeO(anion) 2.713 (3), SeO(cation) 2.987 (3) and SO(anion) 2.958 (3) Å.