N,N′-(Pyridine-2,6-diyl)bis(naphthalene-dicarboximide) trifluoroacetic acid monohydrate

The asymmetric unit of the title compound, C₂₉H₁₅N₃O₄·C ₂HF₃O₂·H₂O, contains two independent molecules (A and B) of N,N′-(pyridine-2,6-diyl)bis-(naphthalenedicarboximide), two trifluoroacetic acid molecules and two water molecules. Molecules A and B differ in the conformations of their imide fragments and in the rotation of the naphthoyleneimide moieties with respect to the pyridine plane. In molecule A, the imide rings are planar, while in B, the N atoms deviate from the least-squares planes through the other ring atoms by 0.10 and 0.09 Å.