DOI: 10.17188/1704934
title: Materials Data on K2Mo2P2O11 by Materials Project

description: K2Mo2P2O11 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are four inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.91–3.33 Å. In the second K1+ site, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.89–3.32 Å. In the third K1+ site, K1+ is bonded to eight O2- atoms to form distorted KO8 hexagonal bipyramids that share corners with two MoO6 octahedra, corners with two PO4 tetrahedra, and edges with four MoO6 octahedra. The corner-sharing octahedral tilt angles are 64°. There are a spread of K–O bond distances ranging from 2.73–2.94 Å. In the fourth K1+ site, K1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of K–O bond distances ranging from 2.74–3.19 Å. There are four inequivalent Mo5+ sites. In the first Mo5+ site, Mo5+ is bonded to six O2- atoms to form distorted MoO6 octahedra that share a cornercorner with one MoO6 octahedra, corners with four PO4 tetrahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedral tilt angles are 36°. There are a spread of Mo–O bond distances ranging from 1.74–2.22 Å. In the second Mo5+ site, Mo5+ is bonded to six O2- atoms to form distorted MoO6 octahedra that share a cornercorner with one MoO6 octahedra, corners with four PO4 tetrahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedral tilt angles are 36°. There are a spread of Mo–O bond distances ranging from 1.74–2.23 Å. In the third Mo5+ site, Mo5+ is bonded to six O2- atoms to form MoO6 octahedra that share a cornercorner with one KO8 hexagonal bipyramid, a cornercorner with one MoO6 octahedra, corners with four PO4 tetrahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedral tilt angles are 36°. There are a spread of Mo–O bond distances ranging from 1.75–2.15 Å. In the fourth Mo5+ site, Mo5+ is bonded to six O2- atoms to form MoO6 octahedra that share a cornercorner with one KO8 hexagonal bipyramid, a cornercorner with one MoO6 octahedra, corners with four PO4 tetrahedra, and an edgeedge with one KO8 hexagonal bipyramid. The corner-sharing octahedral tilt angles are 36°. There are a spread of Mo–O bond distances ranging from 1.75–2.15 Å. There are four inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one KO8 hexagonal bipyramid and corners with four MoO6 octahedra. The corner-sharing octahedra tilt angles range from 52–54°. There is two shorter (1.55 Å) and two longer (1.56 Å) P–O bond length. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one KO8 hexagonal bipyramid and corners with four MoO6 octahedra. The corner-sharing octahedra tilt angles range from 51–54°. There is one shorter (1.55 Å) and three longer (1.56 Å) P–O bond length. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four MoO6 octahedra. The corner-sharing octahedra tilt angles range from 42–50°. There is two shorter (1.55 Å) and two longer (1.57 Å) P–O bond length. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four MoO6 octahedra. The corner-sharing octahedra tilt angles range from 42–51°. There is three shorter (1.55 Å) and one longer (1.57 Å) P–O bond length. There are twenty-two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three K1+ and one Mo5+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three K1+ and one Mo5+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one K1+, one Mo5+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to one K1+, one Mo5+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+, one Mo5+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+, one Mo5+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+ and two Mo5+ atoms. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one K1+ and two Mo5+ atoms. In the ninth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Mo5+, and one P5+ atom. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Mo5+, and one P5+ atom. In the eleventh O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one Mo5+, and one P5+ atom. In the twelfth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one Mo5+, and one P5+ atom. In the thirteenth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Mo5+, and one P5+ atom. In the fourteenth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Mo5+, and one P5+ atom. In the fifteenth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one Mo5+, and one P5+ atom. In the sixteenth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one Mo5+, and one P5+ atom. In the seventeenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Mo5+ and one P5+ atom. In the eighteenth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+, one Mo5+, and one P5+ atom. In the nineteenth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+, one Mo5+, and one P5+ atom. In the twentieth O2- site, O2- is bonded in a 1-coordinate geometry to two K1+, one Mo5+, and one P5+ atom. In the twenty-first O2- site, O2- is bonded in a distorted single-bond geometry to two K1+ and one Mo5+ atom. In the twenty-second O2- site, O2- is bonded in a distorted single-bond geometry to two K1+ and one Mo5+ atom.