Liquid Coordination Complexes Formed by the Heterolytic Cleavage of Metal Halides

摘要

Liquids containing very high metal concentrations are of value for a number of applications: from electrochemistry and Lewis acidic catalysis through to metals refining and inorganic materials syntheses. In the ideal case, such liquids should have well-controlled and tunable metal coordination, leading to adjustable physical properties (i.e. viscosity modifiable from mobile liquid to glass). Some of these requirements have been met by concentrated aqueous or acetonitrile solutions, molten metals/alloys, molten salts, ionic liquids, or deep eutectic solvents. However, each approach has some drawbacks, such as high cost, solubility limits, corrosiveness, or limited control over the metal coordination environment; consequently, the ideal system remains elusive.