metal-organic compounds
The title compound, (C10H9N2)[Fe(C7H3NO4)2]·3H2O, was prepared from the ligand pyridine-2,6-dicarboxylic acid with FeCl3·6H2O in the presence of 2,2-bipyridine. The FeIII atom is six-coordinate in a distorted octahedral geometry. The compound contains protonated 2,2′-bipyridine and doubly deprotonated pyridine-2,6-dicarboxylate (pydc) units; the protonated 2,2′-bipyridine bridges adjacent [Fe(pydc)2]− complex units through hydrogen bonding.