Nickel(II) chloride, is the chemical compound NiCl₂. The anhydrous salt is yellow, but the more familiar hydrate NiCl₂·6H₂O is green. Nickel(II) chloride, in various forms, is the most important source of nickel for chemical synthesis. Nickel chloride is used to prepare various nickel salts and nickel catalysts; and in industrial gas masks to protect from ammonia. Lab Alley is a nickel chloride supplier based in Austin, Texas.
Nickel Chloride is used for nickel plating cast zinc and manufacturing sympathetic ink. Nickel Chloride is an agent in electrolytic refining of nickel. Nickel Chloride is a chemical intermediate for nickel catalysts and complex nickel salts. Nickel Chloride is an absorber of ammonia gas in industrial gas masks. Nickel Chloride is a catalyst in diarylamine and silicon tetrachloride production. Nickel Chloride is an agent in tin-nickel alloy plating. Nickel Chloride is a fungicide and is used for the control of rust and rustlike disease. Nickel Chloride is a reagent chemical. Read more here.
Reactions starting from NiCl2·6H2O can be used to form a variety of nickel coordination complexes because the H2O ligands are rapidly displaced by ammonia, amines, thioethers, thiolates, and organophosphines. In some derivatives, the chloride remains within the coordination sphere, whereas chloride is displaced with highly basic ligands. Some nickel chloride complexes exist as an equilibrium mixture of two geometries; these examples are some of the most dramatic illustrations of structural isomerism for a given coordination number. For example, NiCl2(PPh3)2, containing four-coordinate Ni(II), exists in solution as a mixture of both the diamagnetic square planar and the paramagnetic tetrahedral isomers. Square planar complexes of nickel can often form five-coordinate adducts. NiCl2 is the precursor to acetylacetonate complexes Ni(acac)2(H2O)2 and the benzene-soluble (Ni(acac)2)3, which is a precursor to Ni(1,5-cyclooctadiene)2, an important reagent in organonickel chemistry. In the presence of water scavengers, hydrated nickel(II) chloride reacts with dimethoxyethane (dme) to form the molecular complex NiCl2(dme)2. The dme ligands in this complex are labile. For example, this complex reacts with sodium cyclopentadienide to give the sandwich compound nickelocene. Hexammine nickel chloride complex is soluble when respective cobalt complex is not, which allows for easy separating of these close-related metals in laboratory conditions. Read more here.