Dipotassium trisodium triphosphate, K2Na3P3O10

Abstract

The structure of the title compound, K2Na3P3O10, is characterized by open chains of three PO4 tetrahedra linked by single oxygen bridges. The P3O10 groups have crystallographic twofold symmetry, with the central P atom being located on the twofold rotation axis. One of the sodium ions lies on a centre of inversion, whereas all the remaining atoms are in general positions. The structure is isotypic with that of the high-temperature form of Na5P3O10 phase I.