Bis[μ-N′-(adamantan-1-ylcarbon­yl)-2-oxidobenzohydrazidato(3−)]tetra­pyridine­trinickel(II) dimethyl­formamide monosolvate monohydrate

In the title trinuclear Ni^II compound, [Ni₃(C₁₈H₁₉N₂O₃)₂(C₅H₅N)₄]·C₃H₇NO·H₂O, three Ni^II cations are bridged by two N′-(adamantan-1-ylcarbon­yl)-2-oxidobenzohydrazidate trianions. The central Ni^II cation has a distorted octa­hedral N₄O₂ coordination environment where a reverse torsion occurs between the two bridging ligands, whereas the two Ni^II cations on the sides each adopt an N₂O₂ square-planar coordination. Weak intra­molecular C—H...O and C—H...N inter­actions help to stabilize the mol­ecular structure. In the crystal, the lattice water mol­ecule links with the Ni^II complex and dimethyl­formamide solvent mol­ecule via O—H...O hydrogen bonding.

4-[(3-Meth­oxy­anilino)methyl­idene]-2-phenyl-1,3-oxazol-5(4H)-one

In the title compound, C₁₇H₁₄N₂O₃, the oxazolone ring is essentially planar [maximum deviation = 0.004 (1) Å] and is oriented with respect to the phenyl and benzene rings at 10.06 (9) and 5.63 (8)°, respectively; the dihedral angle between the phenyl ring and the benzene ring is 15.69 (8)°. In the crystal, N—H...O hydrogen bonds link the mol­ecules into chains running along the a axis. Neighbouring chains are inter­connected by π–π stacking, the centroid–centroid distance being 3.6201 (9) Å.