Gold dichloride or AuCl2 is a chemical compound that is widely used in various chemical reactions. It is also known as gold(II) chloride, aurous chloride, or chloroauric acid. In addition to these synonyms, there are other related terms that are frequently used in the scientific community. For instance, gold dichloride may refer to gold chloride hydrate, gold (II) chloride trihydrate, or gold chloride tetrahydrate, depending on the specific conditions and context of the research. Other synonyms may include chloroauric acid complex, gold trichloride, and phosphine gold chloride, among others. These different terms are often used interchangeably to describe various forms or derivatives of gold dichloride.