Used as a catalyst in organic synthesis, particularly in oxidation, coupling, and hydrogenation reactions. It serves as a source of nickel ions in electroplating baths, enhancing deposit uniformity and adhesion. Employed in the preparation of functional materials such as coordination polymers, metal-organic frameworks, and magnetic materials. Also utilized in research for its paramagnetic properties in spectroscopic studies, and as an efficient catalyst in specific solvent systems for highly selective organic transformations.