Phosphonium salt



A phosphonium salt is a salt containing the phosphonium (PH4+) ion such as phosphonium iodide (PH4+I−). More commonly, phosphonium refer to an organic derivative such as tetraphenylphosphonium chloride, (C6H5)4P+ Cl- and tetramethylphosphonium iodide, [P(CH3)4]+I−.