Copper(II halides are chemical compounds formed when copper combines with halogen elements, such as chlorine, bromine, or iodine. These compounds typically have the formula CuX2, where X represents a halogen. Common examples include copper(II) chloride and copper(II) bromide. They are often used in various applications, including catalysis and as pigments in ceramics. These compounds are characterized by their ionic nature, resulting in high melting and boiling points. In solution, copper(II halides can dissociate into copper ions and halide ions, making them useful in electrochemistry and other chemical processes.