Materials Data on KPO4 by Materials Project
KPO4 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are four inequivalent K sites. In the first K site, K is bonded in a 7-coordinate geometry to eight O atoms. There are a spread of K–O bond distances ranging from 2.77–3.25 Å. In the second K site, K is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of K–O bond distances ranging from 2.85–3.00 Å. In the third K site, K is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of K–O bond distances ranging from 2.83–3.10 Å. In the fourth K site, K is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of K–O bond distances ranging from 2.82–3.25 Å. There are four inequivalent P sites. In the first P site, P is bonded in a tetrahedral geometry to four O atoms. There are a spread of P–O bond distances ranging from 1.53–1.55 Å. In the second P site, P is bonded in a tetrahedral geometry to four O atoms. There is one shorter (1.53 Å) and three longer (1.55 Å) P–O bond length. In the third P site, P is bonded in a tetrahedral geometry to four O atoms. There is one shorter (1.54 Å) and three longer (1.55 Å) P–O bond length. In the fourth P site, P is bonded in a tetrahedral geometry to four O atoms. There is three shorter (1.54 Å) and one longer (1.55 Å) P–O bond length. There are sixteen inequivalent O sites. In the first O site, O is bonded in a distorted single-bond geometry to two K and one P atom. In the second O site, O is bonded in a distorted single-bond geometry to one K and one P atom. In the third O site, O is bonded in a distorted single-bond geometry to two K and one P atom. In the fourth O site, O is bonded in a distorted single-bond geometry to two K and one P atom. In the fifth O site, O is bonded in a single-bond geometry to two K and one P atom. In the sixth O site, O is bonded in a distorted single-bond geometry to three K and one P atom. In the seventh O site, O is bonded in a distorted single-bond geometry to two K and one P atom. In the eighth O site, O is bonded in a distorted single-bond geometry to two K and one P atom. In the ninth O site, O is bonded in a distorted single-bond geometry to one K and one P atom. In the tenth O site, O is bonded in a distorted single-bond geometry to two K and one P atom. In the eleventh O site, O is bonded in a distorted single-bond geometry to two K and one P atom. In the twelfth O site, O is bonded in a distorted single-bond geometry to three K and one P atom. In the thirteenth O site, O is bonded in a distorted single-bond geometry to two K and one P atom. In the fourteenth O site, O is bonded in a distorted single-bond geometry to two K and one P atom. In the fifteenth O site, O is bonded in a distorted single-bond geometry to two K and one P atom. In the sixteenth O site, O is bonded in a distorted single-bond geometry to one K and one P atom.