N,N '-(Pyridine-2,6-diyl)bis(naphthalenedicarboximide) trifluoroacetic acid monohydrate

The asymmetric unit of the title compound, C29H15N3O4. C2HF3O2. H2O, contai ns two independent molecules (A and B) of N,N'-(pyridine-2,6-diyl)bis(napht halenedicarboximide), two trifluoroacetic acid molecules and two water mole cules. Molecules A and B differ in the conformations of their imide fragmen ts and in the rotation of the naphthoyleneimide moieties with respect to th e pyridine plane. In molecule A, the imide rings are planar, while in B, th e N atoms deviate from the least squares planes through the other ring atom s by 0.10 and 0.09 Angstrom.