DOI: 10.17188/1270891
title: Materials Data on K9Bi5O13 by Materials Project

description: K9Bi5O13 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are nine inequivalent K1+ sites. In the first K1+ site, K1+ is bonded to six O2- atoms to form distorted KO6 octahedra that share corners with two equivalent KO6 octahedra, a cornercorner with one KO5 square pyramid, a cornercorner with one BiO4 tetrahedra, a cornercorner with one KO5 trigonal bipyramid, edges with five KO6 octahedra, edges with two equivalent KO5 square pyramids, edges with two equivalent BiO4 tetrahedra, and an edgeedge with one KO5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 13°. There are a spread of K–O bond distances ranging from 2.72–3.02 Å. In the second K1+ site, K1+ is bonded to five O2- atoms to form distorted KO5 trigonal bipyramids that share corners with two KO6 octahedra, a cornercorner with one BiO4 tetrahedra, corners with two equivalent KO5 trigonal bipyramids, and edges with two equivalent KO6 octahedra. The corner-sharing octahedra tilt angles range from 37–44°. There are a spread of K–O bond distances ranging from 2.63–3.01 Å. In the third K1+ site, K1+ is bonded to five O2- atoms to form distorted KO5 square pyramids that share a cornercorner with one KO6 octahedra, corners with two equivalent KO5 square pyramids, a cornercorner with one BiO4 tetrahedra, corners with three equivalent KO5 trigonal bipyramids, and edges with four KO6 octahedra. The corner-sharing octahedral tilt angles are 9°. There are a spread of K–O bond distances ranging from 2.68–2.93 Å. In the fourth K1+ site, K1+ is bonded to six O2- atoms to form distorted KO6 octahedra that share corners with three KO6 octahedra, a cornercorner with one KO5 trigonal bipyramid, an edgeedge with one KO5 square pyramid, and edges with three KO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 19–35°. There are a spread of K–O bond distances ranging from 2.73–3.00 Å. In the fifth K1+ site, K1+ is bonded to five O2- atoms to form distorted KO5 trigonal bipyramids that share a cornercorner with one KO6 octahedra, corners with three equivalent KO5 square pyramids, corners with two equivalent BiO4 tetrahedra, a cornercorner with one KO5 trigonal bipyramid, edges with two KO6 octahedra, and an edgeedge with one KO5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 27°. There are a spread of K–O bond distances ranging from 2.68–2.85 Å. In the sixth K1+ site, K1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of K–O bond distances ranging from 2.70–3.13 Å. In the seventh K1+ site, K1+ is bonded to five O2- atoms to form distorted KO5 trigonal bipyramids that share a cornercorner with one BiO4 tetrahedra, corners with three KO5 trigonal bipyramids, edges with two equivalent KO6 octahedra, and an edgeedge with one KO5 trigonal bipyramid. There are a spread of K–O bond distances ranging from 2.60–2.99 Å. In the eighth K1+ site, K1+ is bonded to six O2- atoms to form distorted KO6 octahedra that share corners with three KO6 octahedra, corners with two equivalent BiO4 tetrahedra, a cornercorner with one KO5 trigonal bipyramid, edges with three equivalent KO6 octahedra, an edgeedge with one KO5 square pyramid, an edgeedge with one BiO4 tetrahedra, and edges with two equivalent KO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 29–35°. There are a spread of K–O bond distances ranging from 2.73–3.29 Å. In the ninth K1+ site, K1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of K–O bond distances ranging from 2.69–3.05 Å. There are five inequivalent Bi+3.40+ sites. In the first Bi+3.40+ site, Bi+3.40+ is bonded in a see-saw-like geometry to four O2- atoms. There are a spread of Bi–O bond distances ranging from 2.10–2.43 Å. In the second Bi+3.40+ site, Bi+3.40+ is bonded to four O2- atoms to form BiO4 tetrahedra that share corners with three KO6 octahedra, a cornercorner with one KO5 square pyramid, corners with four KO5 trigonal bipyramids, and edges with three KO6 octahedra. The corner-sharing octahedra tilt angles range from 11–75°. There are two shorter (2.04 Å) and two longer (2.05 Å) Bi–O bond lengths. In the third Bi+3.40+ site, Bi+3.40+ is bonded in a distorted see-saw-like geometry to four O2- atoms. There are a spread of Bi–O bond distances ranging from 2.06–2.69 Å. In the fourth Bi+3.40+ site, Bi+3.40+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Bi–O bond distances ranging from 2.09–2.91 Å. In the fifth Bi+3.40+ site, Bi+3.40+ is bonded in a distorted see-saw-like geometry to four O2- atoms. There are a spread of Bi–O bond distances ranging from 2.07–2.40 Å. There are thirteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a 6-coordinate geometry to four K1+ and two Bi+3.40+ atoms. In the second O2- site, O2- is bonded to five K1+ and one Bi+3.40+ atom to form distorted OK5Bi octahedra that share corners with four OK5Bi octahedra, corners with two OK4Bi trigonal bipyramids, edges with four OK5Bi octahedra, and edges with two equivalent OK4Bi trigonal bipyramids. The corner-sharing octahedra tilt angles range from 3–13°. In the third O2- site, O2- is bonded in a 5-coordinate geometry to four K1+ and one Bi+3.40+ atom. In the fourth O2- site, O2- is bonded to four K1+ and two Bi+3.40+ atoms to form distorted OK4Bi2 octahedra that share corners with four OK5Bi octahedra, a cornercorner with one OK3Bi2 trigonal bipyramid, edges with two equivalent OK5Bi octahedra, an edgeedge with one OK3Bi2 square pyramid, and edges with three OK4Bi trigonal bipyramids. The corner-sharing octahedra tilt angles range from 5–12°. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to three K1+ and one Bi+3.40+ atom. In the sixth O2- site, O2- is bonded in a 5-coordinate geometry to three K1+ and two Bi+3.40+ atoms. In the seventh O2- site, O2- is bonded in a 5-coordinate geometry to two K1+ and three Bi+3.40+ atoms. In the eighth O2- site, O2- is bonded to four K1+ and one Bi+3.40+ atom to form distorted OK4Bi trigonal bipyramids that share a cornercorner with one OK5Bi octahedra, a cornercorner with one OK3Bi2 trigonal bipyramid, and edges with five OK5Bi octahedra. The corner-sharing octahedral tilt angles are 82°. In the ninth O2- site, O2- is bonded to five K1+ and one Bi+3.40+ atom to form distorted OK5Bi octahedra that share corners with four OK5Bi octahedra and an edgeedge with one OK4Bi trigonal bipyramid. The corner-sharing octahedra tilt angles range from 3–27°. In the tenth O2- site, O2- is bonded to three K1+ and two Bi+3.40+ atoms to form distorted OK3Bi2 square pyramids that share corners with two equivalent OK3Bi2 square pyramids, corners with two equivalent OK3Bi2 trigonal bipyramids, edges with three OK5Bi octahedra, and an edgeedge with one OK3Bi2 trigonal bipyramid. In the eleventh O2- site, O2- is bonded to five K1+ and one Bi+3.40+ atom to form distorted OK5Bi octahedra that share corners with four OK5Bi octahedra, edges with two equivalent OK3Bi2 square pyramids, and edges with two OK4Bi trigonal bipyramids. The corner-sharing octahedra tilt angles range from 12–27°. In the twelfth O2- site, O2- is bonded in a 5-coordinate geometry to four K1+ and one Bi+3.40+ atom. In the thirteenth O2- site, O2- is bonded to three K1+ and two equivalent Bi+3.40+ atoms to form distorted OK3Bi2 trigonal bipyramids that share corners with two OK5Bi octahedra, corners with two equivalent OK3Bi2 square pyramids, a cornercorner with one OK4Bi trigonal bipyramid, edges with three OK5Bi octahedra, an edgeedge with one OK3Bi2 square pyramid, and an edgeedge with one OK3Bi2 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 19–80°.