👉 The term "pyridinium" is a chemical compound that has the formula [Cd(CN)6]2+ and it is commonly used in organic synthesis. It is a red colorless, odorless, fumable gas with a density of 1.84 g/cm3 at standard temperature and pressure (STP). It is often used as an oxidizing agent and is used to synthesize various compounds such as pyridine, pyrrolidine, and pyraz