Properties of metaphosphate depending on anion structure

A possibility of forecasting metaphosphate anion composition based on the analysis of data on crystal structure, physical and chemical properties of metaphosphates using computers is revealed. Frequencies of antisymmetric valent vibrations of different PO groups are most informatiVe signs depen-- dent on anion composition. There exist two non-overlapping regions of phosphate groupping in the plane [#betta#sub(as)pop-#betta#sub(as)po] for cyclophosphates with the number of phosphorus atoms in the cycle n=3 and 4 and long-chain phosphates. Data for 51 metaphosphates as well as for REE metaphosphates are given for illustration