organic compounds
Open access
The title 1,4-photoadduct, C21H19NO3, was formed on irradiation of N-benzoylphthalimide in dichloromethane containing cyclohexene. The bond lengths and angles are generally within the normal ranges. A notable feature of the molecule is the presence within it of four contiguous chiral centres.
organic compounds
Open access
The title compound, C14H8Cl4O2, has been isolated following irradiation of a dichloromethane solution of N-acetyltetrachlorophthalimide and cyclohexene. The structure refinement is slightly compromised by the disorder over two positions of equal occupancy of a methylene group β to the spiro C atom.
organic compounds
Open access
A feature of the structure of the title compound, C17H17NO4, is the three-dimensional connectivity generated by intermolecular hydrogen bonds.
organic compounds
Open access
The cation and anion of the title salt, C7H10N+.C14H4N5-, are both bisected by a crystallographic mirror plane. Extensive hydrogen bonding, with the R66(28) graph-set motif, connects the ions into layers.