polyoxomolybdate

Polyoxomolybdates are a large class of inorganic compounds featuring discrete anionic clusters containing molybdenum atoms linked by oxygen atoms. These clusters are typically formed in aqueous solution and can exhibit a wide range of structures, often referred to as polyoxometalate structures. The molybdenum atoms are usually in the +6 oxidation state, and the clusters are stabilized by interstitial atoms such as sodium, potassium, or various organic cations. Common structural motifs include Keggin structures, Wells-Dawson structures, and Anderson structures, each characterized by specific arrangements of molybdenum-oxygen octahedra.

The synthesis of polyoxomolybdates typically involves the controlled acidification of molybdate solutions, often in the presence of other metal ions. The exact structure and composition of the resulting cluster depend on factors such as pH, concentration, temperature, and the presence of other elements. These compounds are soluble in water and various polar organic solvents.

Polyoxomolybdates have garnered significant interest due to their diverse and tunable properties. They exhibit catalytic activity in various oxidation reactions, including epoxidation and the oxidation of alcohols. Their ability to interact with other molecules and their redox properties also make them promising candidates for applications in areas such as electrochemistry, medicine (e.g., as antiviral or anticancer agents), and materials science. The rich structural chemistry and versatile reactivity of polyoxomolybdates continue to be an active area of research.