Materials Data on Bi5O7F by Materials Project

Bi5O7F crystallizes in the triclinic P1 space group. The structure is one-dimensional and consists of one Bi5O7F ribbon oriented in the (1, 0, 0) direction. there are ten inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded to four O2- atoms to form distorted corner-sharing BiO4 trigonal pyramids. There are a spread of Bi–O bond distances ranging from 2.14–2.25 Å. In the second Bi3+ site, Bi3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Bi–O bond distances ranging from 2.13–2.77 Å. In the third Bi3+ site, Bi3+ is bonded to four O2- atoms to form distorted corner-sharing BiO4 trigonal pyramids. There are a spread of Bi–O bond distances ranging from 2.12–2.26 Å. In the fourth Bi3+ site, Bi3+ is bonded in a 6-coordinate geometry to four O2- and two equivalent F1- atoms. There are a spread of Bi–O bond distances ranging from 2.14–2.40 Å. There are one shorter (2.69 Å) and one longer (2.74 Å) Bi–F bond lengths. In the fifth Bi3+ site, Bi3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are a spread of Bi–O bond distances ranging from 2.33–2.89 Å. In the sixth Bi3+ site, Bi3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are a spread of Bi–O bond distances ranging from 2.33–2.86 Å. In the seventh Bi3+ site, Bi3+ is bonded in a 6-coordinate geometry to four O2- and two equivalent F1- atoms. There are a spread of Bi–O bond distances ranging from 2.14–2.40 Å. There are one shorter (2.66 Å) and one longer (2.77 Å) Bi–F bond lengths. In the eighth Bi3+ site, Bi3+ is bonded to four O2- atoms to form distorted corner-sharing BiO4 trigonal pyramids. There are a spread of Bi–O bond distances ranging from 2.12–2.26 Å. In the ninth Bi3+ site, Bi3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Bi–O bond distances ranging from 2.13–2.76 Å. In the tenth Bi3+ site, Bi3+ is bonded to four O2- atoms to form distorted corner-sharing BiO4 trigonal pyramids. There are a spread of Bi–O bond distances ranging from 2.14–2.25 Å. There are fourteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to four Bi3+ atoms. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to three Bi3+ atoms. In the third O2- site, O2- is bonded in a 2-coordinate geometry to four Bi3+ atoms. In the fourth O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of distorted edge and corner-sharing OBi4 tetrahedra. In the fifth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Bi3+ atoms. In the sixth O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of distorted edge and corner-sharing OBi4 tetrahedra. In the seventh O2- site, O2- is bonded in a 4-coordinate geometry to four Bi3+ and one F1- atom. The O–F bond length is 2.59 Å. In the eighth O2- site, O2- is bonded in a 4-coordinate geometry to four Bi3+ and one F1- atom. The O–F bond length is 2.60 Å. In the ninth O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of distorted edge and corner-sharing OBi4 tetrahedra. In the tenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Bi3+ atoms. In the eleventh O2- site, O2- is bonded to four Bi3+ atoms to form a mixture of distorted edge and corner-sharing OBi4 tetrahedra. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to four Bi3+ atoms. In the thirteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to three Bi3+ atoms. In the fourteenth O2- site, O2- is bonded in a 4-coordinate geometry to four Bi3+ atoms. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a 3-coordinate geometry to two equivalent Bi3+ and one O2- atom. In the second F1- site, F1- is bonded in a 3-coordinate geometry to two equivalent Bi3+ and one O2- atom.