Bis{2-[(pyridin-2-yl)methyl­idene­amino]­benzoato-κ³N,N′,O}chromium(III) nitrate monohydrate

The title complex salt hydrate, [Cr(C₁₃H₉N₂O₂)₂]NO₃·H₂O, comprises discrete cations, nitrate anions and solvent water mol­ecules. The Cr^III atom is octa­hedrally coordinated by two anionic Schiff base ligands with the O atoms being cis. The two ligands differ significantly with dihedral angles between the pyridine and benzene rings of 4.8 (2) and 24.9 (2)°. The nitrate anion and solvent water mol­ecule were modelled as being disordered, with the major components having site-occupancy values of 0.856 (14) and 0.727 (16), respectively. The crystal is built of alternating layers of cations and of anions plus water mol­ecules, stacked along the c axis.

Crystal structure of bis­(2-{[(pyridin-2-yl)methyl­idene]amino}­benzoato-κ³N,N′,O)cobalt(II) N,N-di­methyl­formamide sesquisolvate

The coordination geometry around the central Co^II ion is unexpectedly different from that for the co-crystal of the title mol­ecule with anthranilic acid.