Bis[N-(pyridin-2-ylcarbon­yl)pyridine-2-carboxamidato]iron(III) perchlorate monohydrate

The structure of the title salt complex, [Fe(C12H8N3O2)2]ClO4·H2O, contains one FeIII cation, two N-(pyridin-2-ylcarbon­yl)pyridine-2-carboxamidate (bpca−) anions, one perchlorate anion and one water mol­ecule. The FeIII cation has an approximate octa­hedral geometry, defined by six N atoms from two bpca− anions. The nearly parallel [dihedral angle = 1.50 (1)°] bpca− anions form two-dimensional supermolecules along the a axis by the way of weak π–π stacking inteactirons [centroid–centroid distances = 3.948 (2), 4.000 (2), 3.948 (2), 3.911 (2), 3.897 (2), 3.984 (2) and 3.929 (2) A]. Intra- and inter­molecular C—H⋯O hydrogen bonding occurs. The water mol­ecule [occupancies 0.520 (5) and 0.480 (5)], two carbonyl O atoms [occupancies 0.622 (7) and 0.378 (7)] and the four perchlorate O atoms [occupancies 0.887 (4) and 0.113 (4)] are each disordered over two positions.