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.