A phosphate phosphite is a chemical compound or salt that contains phosphate and phosphite anions (PO33- and PO43-).
Phosphate phosphites frequently occur as metal organic framework (MOF) compounds which are of research interest for gas storage, detection or catalysis.
In these phosphate and phosphite form bridging ligands to hard metal ions.
Phosphate phosphite compounds are frequently produced by hydrothermal synthesis, in which a water solution of ingredients is enclosed in a sealed container and heated.
On heating, Related to these are the nitrite nitrates and arsenate arsenites.