Aqua­[4-bromo-2-(pyridin-2-ylmethylimino­methyl)phenolato]copper(II) nitrate monohydrate

The title compound, [Cu(C₁₃H₁₀BrN₂O)(H₂O)](NO₃)·H₂O, is a mononuclear copper(II) complex. The Cu^II atom is four-coordinated by two N atoms and one O atom from the Schiff base ligand, and another O atom from a coordinated water mol­ecule, forming a slightly distorted square-planar coordination configuration. In the crystal structure, all the O atoms in the nitrate anions and water mol­ecules contribute to hydrogen bonds, leading to the formation of a two-dimensional network.

Azido­[1-(isobutyl­amino­methyl­iminomethyl)-2-naphtholato]nickel(II)

The title compound, [Ni(C₁₅H₁₇N₂O)(N₃)], is a mononuclear nickel(II) complex. The Ni^II atom is four-coordinated by two N atoms and one O atom of the Schiff base ligand, and another N atom from an azide anion, forming a slightly distorted square-planar coordination configuration.

catena-Poly[[bis­(4-chloro­methyl­pyridine-κN)cobalt(II)]-di-μ-dicyanamido-κ²N¹:κ²N⁵]

The title compound, [Co(C₂N₃)(C₆H₆ClN)₂]_n, is a polymeric cobalt(II) complex with the metal ion located on an inversion centre. The Co^II ion is six-coordinated by two N atoms of two 4-chloro­methyl­pyridine ligands and four N atoms from four dicyanamide ligands, forming a slightly distorted octa­hedral configuration. In the crystal structure, neighbouring Co atoms are linked together by double dicyanamide bridges to form a polymeric cobalt(II) complex.