Книга: Phosphite: Organophosphorus, Phosphine, Phosphine Oxide, Phosphinite, Phosphinate

High Quality Content by WIKIPEDIA articles! The phosphite ion (HPO32?) is a polyatomic ion with a phosphorus central atom where phosphorus has an oxidation state of +3. Its geometry is approximately tetrahedral.The conjugate acid of the phosphite anion is phosphorous acid (H3PO3 formulated HP(O)(OH)2). Other names for this acid are orthophosphorous acid and dihydroxyphosphine oxide. Phosphorous acid is a diprotic acid, since the hydrogen bonded directly to the central phosphorus atom is not ionizable. Thus, a more logical chemical formula for phosphorous acid is HPO(OH)2, since only two hydroxy groups are actually present on the acid.Pyrophosphites(diphosphites) can be produced by gently heating acid phosphites under reduced pressure. They contain the ion, H2P2O52?which can be formulated [HP(O)2O?P(O)2H]2?.