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KBiF6 crystallizes in the cubic Ia-3 space group. The structure is three-dimensional. K1+ is bonded in a 6-coordinate geometry to six equivalent F1- atoms. All K–F bond lengths are 2.74 Å. Bi5+ is bonded in an octahedral geometry to six equivalent F1- atoms. All Bi–F bond lengths are 2.05 Å. F1- is bonded in a bent 150 degrees geometry to one K1+ and one Bi5+ atom.
K2BiF5 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. K1+ is bonded in a 8-coordinate geometry to eight F1- atoms. There are a spread of K–F bond distances ranging from 2.72–2.98 Å. Bi3+ is bonded to seven F1- atoms to form edge-sharing BiF7 pentagonal bipyramids. There are a spread of Bi–F bond distances ranging from 2.24–2.52 Å. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded to four equivalent K1+ and one Bi3+ atom to form distorted corner-sharing FK4Bi square pyramids. In the second F1- site, F1- is bonded in a distorted rectangular see-saw-like geometry to two equivalent K1+ and two equivalent Bi3+ atoms. In the third F1- site, F1- is bonded in a 5-coordinate geometry to four equivalent K1+ and one Bi3+ atom. In the fourth F1- site, F1- is bonded in a 5-coordinate geometry to four equivalent K1+ and one Bi3+ atom.
KBiF4 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. K1+ is bonded in a body-centered cubic geometry to eight F1- atoms. There are two shorter (2.56 Å) and six longer (2.80 Å) K–F bond lengths. Bi3+ is bonded in a distorted body-centered cubic geometry to eight F1- atoms. There are six shorter (2.37 Å) and two longer (2.56 Å) Bi–F bond lengths. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded to four equivalent K1+ atoms to form FK4 tetrahedra that share corners with sixteen FK4 tetrahedra and edges with six equivalent FK2Bi2 tetrahedra. In the second F1- site, F1- is bonded to two equivalent K1+ and two equivalent Bi3+ atoms to form a mixture of distorted corner and edge-sharing FK2Bi2 tetrahedra. In the third F1- site, F1- is bonded to four equivalent Bi3+ atoms to form a mixture of distorted corner and edge-sharing FBi4 tetrahedra.
KBi2F7 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 5-coordinate geometry to five F1- atoms. There are a spread of K–F bond distances ranging from 2.47–2.94 Å. In the second K1+ site, K1+ is bonded in a 7-coordinate geometry to seven F1- atoms. There are a spread of K–F bond distances ranging from 2.71–3.30 Å. There are four inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a 7-coordinate geometry to seven F1- atoms. There are a spread of Bi–F bond distances ranging from 2.19–2.70 Å. In the second Bi3+ site, Bi3+ is bonded in a 7-coordinate geometry to seven F1- atoms. There are a spread of Bi–F bond distances ranging from 2.14–2.88 Å. In the third Bi3+ site, Bi3+ is bonded in a 7-coordinate geometry to seven F1- atoms. There are a spread of Bi–F bond distances ranging from 2.20–2.69 Å. In the fourth Bi3+ site, Bi3+ is bonded in a 7-coordinate geometry to seven F1- atoms. There are a spread of Bi–F bond distances ranging from 2.17–2.56 Å. There are fourteen inequivalent F1- sites. In the first F1- site, F1- is bonded in a 3-coordinate geometry to one K1+ and two equivalent Bi3+ atoms. In the second F1- site, F1- is bonded to three equivalent K1+ and one Bi3+ atom to form distorted FK3Bi tetrahedra that share corners with six equivalent FK3Bi tetrahedra and corners with three equivalent FK4 trigonal pyramids. In the third F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent Bi3+ atoms. In the fourth F1- site, F1- is bonded to four K1+ atoms to form distorted FK4 trigonal pyramids that share corners with three equivalent FK3Bi tetrahedra and corners with six equivalent FK4 trigonal pyramids. In the fifth F1- site, F1- is bonded in a 1-coordinate geometry to three equivalent K1+ and one Bi3+ atom. In the sixth F1- site, F1- is bonded in a 3-coordinate geometry to three Bi3+ atoms. In the seventh F1- site, F1- is bonded in a 3-coordinate geometry to one K1+ and two equivalent Bi3+ atoms. In the eighth F1- site, F1- is bonded in a distorted bent 120 degrees geometry to two Bi3+ atoms. In the ninth F1- site, F1- is bonded in a 3-coordinate geometry to three Bi3+ atoms. In the tenth F1- site, F1- is bonded in a 2-coordinate geometry to three Bi3+ atoms. In the eleventh F1- site, F1- is bonded in a bent 120 degrees geometry to two Bi3+ atoms. In the twelfth F1- site, F1- is bonded in a 1-coordinate geometry to three Bi3+ atoms. In the thirteenth F1- site, F1- is bonded in a bent 120 degrees geometry to two Bi3+ atoms. In the fourteenth F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent Bi3+ atoms.
KBi2F7 crystallizes in the triclinic P1 space group. The structure is three-dimensional. K1+ is bonded in a 5-coordinate geometry to six F1- atoms. There are a spread of K–F bond distances ranging from 2.65–3.27 Å. There are two inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a 7-coordinate geometry to seven F1- atoms. There are a spread of Bi–F bond distances ranging from 2.19–2.68 Å. In the second Bi3+ site, Bi3+ is bonded in a 7-coordinate geometry to seven F1- atoms. There are a spread of Bi–F bond distances ranging from 2.18–2.76 Å. There are seven inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted bent 120 degrees geometry to two equivalent Bi3+ atoms. In the second F1- site, F1- is bonded to three equivalent K1+ and one Bi3+ atom to form distorted corner-sharing FK3Bi tetrahedra. In the third F1- site, F1- is bonded in a distorted bent 120 degrees geometry to two equivalent Bi3+ atoms. In the fourth F1- site, F1- is bonded in a 3-coordinate geometry to three equivalent K1+ and one Bi3+ atom. In the fifth F1- site, F1- is bonded in a 3-coordinate geometry to three equivalent Bi3+ atoms. In the sixth F1- site, F1- is bonded in a 3-coordinate geometry to three equivalent Bi3+ atoms. In the seventh F1- site, F1- is bonded in a 1-coordinate geometry to two Bi3+ atoms.
KBi3F10 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. K1+ is bonded in a tetrahedral geometry to four equivalent F1- atoms. All K–F bond lengths are 2.83 Å. Bi3+ is bonded in a 8-coordinate geometry to eight F1- atoms. There are four shorter (2.30 Å) and four longer (2.49 Å) Bi–F bond lengths. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent Bi3+ atoms. In the second F1- site, F1- is bonded to one K1+ and three equivalent Bi3+ atoms to form a mixture of edge and corner-sharing FKBi3 tetrahedra.