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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Bi5O7F by Materials Project

Bi5O7F crystallizes in the orthorhombic Ibca space group. The structure is two-dimensional and consists of two Bi5O7F sheets oriented in the (0, 0, 1) direction. there are three inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a 7-coordinate geometry to six O2- and one F1- atom. There are a spread of Bi–O bond distances ranging from 2.23–2.61 Å. The Bi–F bond length is 2.88 Å. In the second Bi3+ site, Bi3+ is bonded in a 4-coordinate geometry to three O2- atoms. There are a spread of Bi–O bond distances ranging from 2.10–2.16 Å. In the third Bi3+ site, Bi3+ is bonded in a 4-coordinate geometry to four equivalent O2- and two equivalent F1- atoms. There are two shorter (2.24 Å) and two longer (2.25 Å) Bi–O bond lengths. Both Bi–F bond lengths are 2.86 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded to four Bi3+ and two equivalent F1- atoms to form distorted OBi4F2 tetrahedra that share corners with two equivalent OBi4 tetrahedra, edges with three OBi4F2 tetrahedra, and faces with three equivalent OBi4F2 tetrahedra. There are one shorter (2.96 Å) and one longer (3.01 Å) O–F bond lengths. In the second O2- site, O2- is bonded in a 3-coordinate geometry to three Bi3+ atoms. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent Bi3+ atoms. In the fourth O2- site, O2- is bonded to four equivalent Bi3+ atoms to form a mixture of corner and edge-sharing OBi4 tetrahedra. F1- is bonded in a 4-coordinate geometry to four Bi3+ and four equivalent O2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

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.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Bi5O7F by Materials Project

Bi5O7F crystallizes in the monoclinic C2/m space group. The structure is one-dimensional and consists of two Bi5O7F ribbons oriented in the (0, 1, 0) direction. there are five 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 2.13–2.24 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 2.12–2.75 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 2.11–2.25 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 2.14–2.38 Å. Both Bi–F bond lengths are 2.72 Å. 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 2.33–2.87 Å. There are seven 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 2.60 Å. F1- is bonded in a 3-coordinate geometry to two equivalent Bi3+ and one O2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Bi5O7F by Materials Project

Bi5O7F crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are five inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Bi–O bond distances ranging from 2.10–2.53 Å. In the second Bi3+ site, Bi3+ is bonded in a 5-coordinate geometry to four O2- and one F1- atom. There are a spread of Bi–O bond distances ranging from 2.19–2.45 Å. The Bi–F bond length is 2.56 Å. In the third Bi3+ site, Bi3+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Bi–O bond distances ranging from 2.10–2.56 Å. In the fourth Bi3+ site, Bi3+ is bonded in a 5-coordinate geometry to four O2- and one F1- atom. There are a spread of Bi–O bond distances ranging from 2.15–2.50 Å. The Bi–F bond length is 2.58 Å. In the fifth Bi3+ site, Bi3+ is bonded in a 6-coordinate geometry to five O2- and one F1- atom. There are a spread of Bi–O bond distances ranging from 2.25–2.53 Å. The Bi–F bond length is 2.57 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Bi3+ atoms. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Bi3+ atoms. In the third O2- site, O2- is bonded in a 3-coordinate geometry to three Bi3+ atoms. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to three Bi3+ atoms. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to three Bi3+ atoms. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to three Bi3+ atoms. In the seventh O2- site, O2- is bonded in a trigonal planar geometry to three Bi3+ atoms. F1- is bonded in a 3-coordinate geometry to three Bi3+ atoms.

36 MATERIALS SCIENCE↗