Ferrocene is a chemical compound consisting of an iron atom sandwiched between two cyclopentadienyl anions. It is classified as a metallocene, a type of organometallic compound, and has a distinctive orange color. Ferrocene is known for its stability and unique properties, making it useful in various applications, including as a catalyst and in materials science. Discovered in the 1950s, ferrocene has become a significant compound in chemistry due to its ability to undergo redox reactions. Its structure allows for easy modification, leading to the development of numerous derivatives. Researchers continue to explore its potential in fields such as nanotechnology and medicine.