FeSe2

FeSe2 is a chemical compound composed of iron and sulfur. It is one of several iron sulfides, and specifically, it is a diselenide, meaning it contains two selenium atoms for each iron atom. FeSe2 exists in various crystallographic forms, with the marcasite structure being a common one. This structure is characterized by a specific arrangement of iron and selenium atoms in a repeating three-dimensional lattice.

The physical properties of FeSe2 are dependent on its specific crystal structure and purity. It is generally a solid material at room temperature. The compound can be synthesized through various chemical routes, often involving the reaction of iron with selenium at elevated temperatures. Its electrical and magnetic properties have been a subject of scientific interest, with research exploring its potential applications in areas such as catalysis and materials science. Understanding the precise stoichiometry and crystal structure is crucial when studying its behavior and potential uses.