metal-organic compounds
In the title compound, [Ni2(C7H5O2)(C27H27N4O2)(H2O)]·2.38H2O, each Ni atom is coordinated by two N atoms and four O atoms from the heptadentate Schiff base ligand and one salicylaldehyde or water molecule, forming an asymmetric molecule with three bridges linking the two NiII ions, which are separated by 3.081 (1) Å. Hydrogen-bonded water and C—Hπ interactions take part in the stabilization of the complex. The complex molecules are connected into a one-dimensional chain along the c axis by O—HO hydrogen bonds between coordinated and solvent water molecules and by C—Hπ interactions.
metal-organic compounds
The self-assembly of the title dinuclear complex, namely (μ-p-phenylenediamine-N,N,N′,N′-tetraacetato)bis[aqua(1,10-phenanthroline)nickel(II)] dodecahydrate, [Ni2(C14H12N2O8)(C12H8N2)2(H2O)2]·12H2O, through intricate noncovalent interactions results in a two-dimensional sheet-like structure. The dimer lies about an inversion centre at the centre of the p-phenylenediamine ring. Uncoordinated water molecules form one-dimensional chains in which cyclic water tetramers act as two types of building blocks. The water molecules play a significant role in the stabilization of the three-dimensional supramolecular framework. Intramolecular `aryl–metal chelate ring' π–π interactions are also observed.