Acridine 0.75-hydrate.

ABSTRACT: The title compound, C(13)H(9)N·0.75H(2)O was obtained during a study of the polymorphic system of acridine, by slow evaporation from an ethanol-water solution. There are two acridine mol-ecules (indicated by I and II, respectively) and one and a half water mol-ecules in the asymmetric unit. The half-mol-ecule of water is located on a crystallographic twofold axis. The crystal structure is built up from two threads of mol-ecule II sewn together with water mol-ecules through O-H?O and O-H?N hydrogen bonds from one side and with ?-? inter-actions [centroid-centroid distance = 3.640?(3) and 3.7431?(3)?Å] between overlapping mol-ecules II on the other side. Mol-ecule I is attached to this thread from both sides by C-H?O hydrogen bonds. The threads are connected to each other by ?-? inter-actions [centroid-centroid distances = 3.582?(3) and 3.582?(3)?Å] between the inner side of mol-ecule I and stabilized by a C-H?? inter-action on the other side of mol-ecule I. This thread with rows of mol-ecule I hanging on its sides is generated by translation perpendicular to the a axis.

SUBMITTER: Schur E 

PROVIDER: S-EPMC3201491 | biostudies-literature | 2011 Oct

REPOSITORIES: biostudies-literature