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DOE OSTI2020

Materials Data on Fe3(OF2)2 by Materials Project

Fe3(OF2)2 is zeta iron carbide-derived structured and crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are four inequivalent Fe+2.67+ sites. In the first Fe+2.67+ site, Fe+2.67+ is bonded to two O2- and four F1- atoms to form FeO2F4 octahedra that share corners with eight FeO3F3 octahedra and edges with two FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 40–58°. There is one shorter (1.99 Å) and one longer (2.00 Å) Fe–O bond length. There are two shorter (2.10 Å) and two longer (2.11 Å) Fe–F bond lengths. In the second Fe+2.67+ site, Fe+2.67+ is bonded to three O2- and three F1- atoms to form FeO3F3 octahedra that share corners with eight FeO2F4 octahedra and edges with two FeO3F3 octahedra. The corner-sharing octahedra tilt angles range from 40–58°. There are a spread of Fe–O bond distances ranging from 1.91–2.01 Å. There are two shorter (2.09 Å) and one longer (2.17 Å) Fe–F bond lengths. In the third Fe+2.67+ site, Fe+2.67+ is bonded to six F1- atoms to form FeF6 octahedra that share corners with eight FeO3F3 octahedra and edges with two equivalent FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 47–52°. There are two shorter (2.00 Å) and four longer (2.11 Å) Fe–F bond lengths. In the fourth Fe+2.67+ site, Fe+2.67+ is bonded to two equivalent O2- and four F1- atoms to form FeO2F4 octahedra that share corners with eight FeO2F4 octahedra and edges with two equivalent FeO3F3 octahedra. The corner-sharing octahedra tilt angles range from 46–52°. Both Fe–O bond lengths are 1.96 Å. There are two shorter (2.02 Å) and two longer (2.06 Å) Fe–F bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to three Fe+2.67+ atoms. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to three Fe+2.67+ atoms. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.67+ atoms. In the second F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.67+ atoms. In the third F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.67+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe2OF3 by Materials Project

Fe2OF3 is zeta iron carbide-derived structured and crystallizes in the monoclinic C2 space group. The structure is three-dimensional. there are five inequivalent Fe+2.50+ sites. In the first Fe+2.50+ site, Fe+2.50+ is bonded to two O2- and four F1- atoms to form FeO2F4 octahedra that share corners with eight FeOF5 octahedra and edges with two FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 45–58°. There is one shorter (1.90 Å) and one longer (1.91 Å) Fe–O bond length. There are a spread of Fe–F bond distances ranging from 2.05–2.19 Å. In the second Fe+2.50+ site, Fe+2.50+ is bonded to two O2- and four F1- atoms to form FeO2F4 octahedra that share corners with eight FeOF5 octahedra and edges with two FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 46–54°. There is one shorter (1.91 Å) and one longer (1.94 Å) Fe–O bond length. There are a spread of Fe–F bond distances ranging from 2.04–2.12 Å. In the third Fe+2.50+ site, Fe+2.50+ is bonded to one O2- and five F1- atoms to form FeOF5 octahedra that share corners with eight FeO2F4 octahedra and edges with two equivalent FeOF5 octahedra. The corner-sharing octahedra tilt angles range from 46–54°. The Fe–O bond length is 2.06 Å. There are a spread of Fe–F bond distances ranging from 2.10–2.14 Å. In the fourth Fe+2.50+ site, Fe+2.50+ is bonded to one O2- and five F1- atoms to form FeOF5 octahedra that share corners with eight FeO2F4 octahedra and edges with two FeOF5 octahedra. The corner-sharing octahedra tilt angles range from 45–58°. The Fe–O bond length is 2.04 Å. There are a spread of Fe–F bond distances ranging from 2.09–2.17 Å. In the fifth Fe+2.50+ site, Fe+2.50+ is bonded to one O2- and five F1- atoms to form FeOF5 octahedra that share corners with eight FeO2F4 octahedra and edges with two equivalent FeOF5 octahedra. The corner-sharing octahedra tilt angles range from 47–54°. The Fe–O bond length is 2.01 Å. There are a spread of Fe–F bond distances ranging from 2.13–2.19 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to three Fe+2.50+ atoms. In the second O2- site, O2- is bonded in a trigonal planar geometry to three Fe+2.50+ atoms. In the third O2- site, O2- is bonded in a trigonal planar geometry to three Fe+2.50+ atoms. There are seven inequivalent F1- sites. In the first F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the second F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the third F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the fourth F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the fifth F1- site, F1- is bonded in a distorted trigonal planar geometry to three Fe+2.50+ atoms. In the sixth F1- site, F1- is bonded in a distorted trigonal planar geometry to three Fe+2.50+ atoms. In the seventh F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe4O5F3 by Materials Project

Fe4O5F3 is Hydrophilite-derived structured and crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are six inequivalent Fe sites. In the first Fe site, Fe is bonded to four O and two equivalent F atoms to form FeO4F2 octahedra that share corners with eight FeO3F3 octahedra and edges with two equivalent FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 46–57°. There is two shorter (1.98 Å) and two longer (2.01 Å) Fe–O bond length. Both Fe–F bond lengths are 2.08 Å. In the second Fe site, Fe is bonded to four O and two equivalent F atoms to form a mixture of edge and corner-sharing FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 42–52°. There is two shorter (1.92 Å) and two longer (1.98 Å) Fe–O bond length. Both Fe–F bond lengths are 2.08 Å. In the third Fe site, Fe is bonded to four O and two F atoms to form a mixture of edge and corner-sharing FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 44–57°. There are a spread of Fe–O bond distances ranging from 1.92–2.01 Å. There are one shorter (2.10 Å) and one longer (2.21 Å) Fe–F bond lengths. In the fourth Fe site, Fe is bonded to four O and two equivalent F atoms to form FeO4F2 octahedra that share corners with eight FeO4F2 octahedra and edges with two equivalent FeO3F3 octahedra. The corner-sharing octahedra tilt angles range from 48–52°. There is two shorter (1.93 Å) and two longer (1.97 Å) Fe–O bond length. Both Fe–F bond lengths are 2.07 Å. In the fifth Fe site, Fe is bonded to three O and three F atoms to form a mixture of edge and corner-sharing FeO3F3 octahedra. The corner-sharing octahedra tilt angles range from 42–57°. There is two shorter (1.92 Å) and one longer (1.93 Å) Fe–O bond length. There are a spread of Fe–F bond distances ranging from 2.06–2.14 Å. In the sixth Fe site, Fe is bonded to four O and two equivalent F atoms to form FeO4F2 octahedra that share corners with eight FeO4F2 octahedra and edges with two equivalent FeO3F3 octahedra. The corner-sharing octahedra tilt angles range from 46–53°. There are two shorter (2.02 Å) and two longer (2.04 Å) Fe–O bond lengths. Both Fe–F bond lengths are 2.04 Å. There are five inequivalent O sites. In the first O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the second O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the third O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the fourth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fifth O site, O is bonded in a trigonal planar geometry to three Fe atoms. There are three inequivalent F sites. In the first F site, F is bonded in a distorted T-shaped geometry to three Fe atoms. In the second F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the third F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe4O5F3 by Materials Project

Fe4O5F3 is Hydrophilite-derived structured and crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are four inequivalent Fe sites. In the first Fe site, Fe is bonded to four O and two equivalent F atoms to form a mixture of corner and edge-sharing FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 48–53°. All Fe–O bond lengths are 1.97 Å. Both Fe–F bond lengths are 2.07 Å. In the second Fe site, Fe is bonded to four O and two equivalent F atoms to form a mixture of corner and edge-sharing FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 45–52°. There is two shorter (1.95 Å) and two longer (1.97 Å) Fe–O bond length. Both Fe–F bond lengths are 2.17 Å. In the third Fe site, Fe is bonded to four O and two equivalent F atoms to form FeO4F2 octahedra that share corners with eight FeO4F2 octahedra and edges with two equivalent FeO3F3 octahedra. The corner-sharing octahedra tilt angles range from 48–52°. There are a spread of Fe–O bond distances ranging from 1.94–2.08 Å. Both Fe–F bond lengths are 2.10 Å. In the fourth Fe site, Fe is bonded to three O and three F atoms to form a mixture of corner and edge-sharing FeO3F3 octahedra. The corner-sharing octahedra tilt angles range from 45–53°. There is one shorter (1.92 Å) and two longer (1.93 Å) Fe–O bond length. There are one shorter (2.09 Å) and two longer (2.12 Å) Fe–F bond lengths. There are four inequivalent O sites. In the first O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the second O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the third O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fourth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. There are two inequivalent F sites. In the first F site, F is bonded in a distorted T-shaped geometry to three Fe atoms. In the second F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe2OF3 by Materials Project

Fe2OF3 is zeta iron carbide-derived structured and crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are six inequivalent Fe+2.50+ sites. In the first Fe+2.50+ site, Fe+2.50+ is bonded to one O2- and five F1- atoms to form FeOF5 octahedra that share corners with eight FeO2F4 octahedra and edges with two FeOF5 octahedra. The corner-sharing octahedra tilt angles range from 47–54°. The Fe–O bond length is 2.05 Å. There are four shorter (2.11 Å) and one longer (2.18 Å) Fe–F bond lengths. In the second Fe+2.50+ site, Fe+2.50+ is bonded to one O2- and five F1- atoms to form FeOF5 octahedra that share corners with eight equivalent FeO2F4 octahedra and edges with two equivalent FeOF5 octahedra. The corner-sharing octahedra tilt angles range from 47–53°. The Fe–O bond length is 2.05 Å. There are four shorter (2.11 Å) and one longer (2.18 Å) Fe–F bond lengths. In the third Fe+2.50+ site, Fe+2.50+ is bonded to one O2- and five F1- atoms to form FeOF5 octahedra that share corners with eight FeO2F4 octahedra and edges with two FeOF5 octahedra. The corner-sharing octahedra tilt angles range from 44–58°. The Fe–O bond length is 2.05 Å. There are a spread of Fe–F bond distances ranging from 2.11–2.16 Å. In the fourth Fe+2.50+ site, Fe+2.50+ is bonded to two O2- and four F1- atoms to form FeO2F4 octahedra that share corners with eight FeOF5 octahedra and edges with two FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 47–54°. Both Fe–O bond lengths are 1.92 Å. There are a spread of Fe–F bond distances ranging from 2.07–2.10 Å. In the fifth Fe+2.50+ site, Fe+2.50+ is bonded to two O2- and four F1- atoms to form FeO2F4 octahedra that share corners with eight FeOF5 octahedra and edges with two FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 47–53°. There is one shorter (1.92 Å) and one longer (1.93 Å) Fe–O bond length. There are a spread of Fe–F bond distances ranging from 2.07–2.11 Å. In the sixth Fe+2.50+ site, Fe+2.50+ is bonded to two equivalent O2- and four F1- atoms to form FeO2F4 octahedra that share corners with eight equivalent FeOF5 octahedra and edges with two equivalent FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 44–58°. Both Fe–O bond lengths are 1.90 Å. There are two shorter (2.07 Å) and two longer (2.17 Å) Fe–F bond lengths. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to three Fe+2.50+ atoms. In the second O2- site, O2- is bonded in a trigonal planar geometry to three Fe+2.50+ atoms. In the third O2- site, O2- is bonded in a trigonal planar geometry to three Fe+2.50+ atoms. There are six inequivalent F1- sites. In the first F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the second F1- site, F1- is bonded in a distorted T-shaped geometry to three Fe+2.50+ atoms. In the third F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the fourth F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the fifth F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the sixth F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe2OF3 by Materials Project

Fe2OF3 is zeta iron carbide-derived structured and crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are six inequivalent Fe+2.50+ sites. In the first Fe+2.50+ site, Fe+2.50+ is bonded to one O2- and five F1- atoms to form FeOF5 octahedra that share corners with eight FeO2F4 octahedra and edges with two FeOF5 octahedra. The corner-sharing octahedra tilt angles range from 44–58°. The Fe–O bond length is 2.01 Å. There are two shorter (2.13 Å) and three longer (2.14 Å) Fe–F bond lengths. In the second Fe+2.50+ site, Fe+2.50+ is bonded to one O2- and five F1- atoms to form FeOF5 octahedra that share corners with eight FeO2F4 octahedra and edges with two FeOF5 octahedra. The corner-sharing octahedra tilt angles range from 44–58°. The Fe–O bond length is 2.01 Å. There are two shorter (2.13 Å) and three longer (2.14 Å) Fe–F bond lengths. In the third Fe+2.50+ site, Fe+2.50+ is bonded to one O2- and five F1- atoms to form FeOF5 octahedra that share corners with eight equivalent FeO2F4 octahedra and edges with two equivalent FeOF5 octahedra. The corner-sharing octahedra tilt angles range from 46–55°. The Fe–O bond length is 2.01 Å. There are one shorter (2.12 Å) and four longer (2.14 Å) Fe–F bond lengths. In the fourth Fe+2.50+ site, Fe+2.50+ is bonded to two equivalent O2- and four F1- atoms to form FeO2F4 octahedra that share corners with eight equivalent FeOF5 octahedra and edges with two equivalent FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 44–58°. Both Fe–O bond lengths are 1.91 Å. There are two shorter (2.03 Å) and two longer (2.17 Å) Fe–F bond lengths. In the fifth Fe+2.50+ site, Fe+2.50+ is bonded to two O2- and four F1- atoms to form FeO2F4 octahedra that share corners with eight FeOF5 octahedra and edges with two FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 44–58°. There is one shorter (1.91 Å) and one longer (1.92 Å) Fe–O bond length. There are two shorter (2.03 Å) and two longer (2.17 Å) Fe–F bond lengths. In the sixth Fe+2.50+ site, Fe+2.50+ is bonded to two O2- and four F1- atoms to form FeO2F4 octahedra that share corners with eight FeOF5 octahedra and edges with two FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 47–50°. Both Fe–O bond lengths are 1.94 Å. There are a spread of Fe–F bond distances ranging from 2.03–2.11 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to three Fe+2.50+ atoms. In the second O2- site, O2- is bonded in a trigonal planar geometry to three Fe+2.50+ atoms. In the third O2- site, O2- is bonded in a trigonal planar geometry to three Fe+2.50+ atoms. There are six inequivalent F1- sites. In the first F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the second F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the third F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the fourth F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the fifth F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the sixth F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe3(OF2)2 by Materials Project

Fe3(OF2)2 is zeta iron carbide-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Fe+2.67+ sites. In the first Fe+2.67+ site, Fe+2.67+ is bonded to two equivalent O2- and four F1- atoms to form a mixture of edge and corner-sharing FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 43–57°. There is one shorter (1.91 Å) and one longer (1.92 Å) Fe–O bond length. There are a spread of Fe–F bond distances ranging from 2.04–2.14 Å. In the second Fe+2.67+ site, Fe+2.67+ is bonded to two equivalent O2- and four F1- atoms to form a mixture of edge and corner-sharing FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 48–57°. Both Fe–O bond lengths are 2.04 Å. There are two shorter (2.15 Å) and two longer (2.21 Å) Fe–F bond lengths. O2- is bonded in a distorted trigonal planar geometry to three Fe+2.67+ atoms. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.67+ atoms. In the second F1- site, F1- is bonded in a trigonal planar geometry to three Fe+2.67+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe2OF3 by Materials Project

Fe2OF3 is zeta iron carbide-derived structured and crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are five inequivalent Fe+2.50+ sites. In the first Fe+2.50+ site, Fe+2.50+ is bonded to two O2- and four F1- atoms to form a mixture of edge and corner-sharing FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 45–54°. Both Fe–O bond lengths are 1.94 Å. There are a spread of Fe–F bond distances ranging from 2.05–2.08 Å. In the second Fe+2.50+ site, Fe+2.50+ is bonded to two O2- and four F1- atoms to form a mixture of edge and corner-sharing FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 44–54°. Both Fe–O bond lengths are 1.94 Å. There are a spread of Fe–F bond distances ranging from 2.05–2.08 Å. In the third Fe+2.50+ site, Fe+2.50+ is bonded to two equivalent O2- and four F1- atoms to form FeO2F4 octahedra that share corners with eight FeO2F4 octahedra and edges with two equivalent FeF6 octahedra. The corner-sharing octahedra tilt angles range from 49–51°. Both Fe–O bond lengths are 2.17 Å. All Fe–F bond lengths are 2.14 Å. In the fourth Fe+2.50+ site, Fe+2.50+ is bonded to one O2- and five F1- atoms to form FeOF5 octahedra that share corners with eight FeO2F4 octahedra and edges with two equivalent FeOF5 octahedra. The corner-sharing octahedra tilt angles range from 47–54°. The Fe–O bond length is 2.04 Å. There are four shorter (2.12 Å) and one longer (2.22 Å) Fe–F bond lengths. In the fifth Fe+2.50+ site, Fe+2.50+ is bonded to six F1- atoms to form a mixture of edge and corner-sharing FeF6 octahedra. The corner-sharing octahedra tilt angles range from 44–49°. There are two shorter (2.04 Å) and four longer (2.10 Å) Fe–F bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to three Fe+2.50+ atoms. In the second O2- site, O2- is bonded in a trigonal planar geometry to three Fe+2.50+ atoms. There are six inequivalent F1- sites. In the first F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the second F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the third F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the fourth F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms. In the fifth F1- site, F1- is bonded in a distorted trigonal planar geometry to three Fe+2.50+ atoms. In the sixth F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.50+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe5(O4F)2 by Materials Project

Fe5(O4F)2 is Hydrophilite-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are ten inequivalent Fe sites. In the first Fe site, Fe is bonded to four O and two F atoms to form a mixture of corner and edge-sharing FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 50–51°. There are a spread of Fe–O bond distances ranging from 1.93–1.98 Å. There are one shorter (2.02 Å) and one longer (2.07 Å) Fe–F bond lengths. In the second Fe site, Fe is bonded to five O and one F atom to form FeO5F octahedra that share corners with eight FeO5F octahedra and edges with two FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 45–54°. There are a spread of Fe–O bond distances ranging from 1.94–2.00 Å. The Fe–F bond length is 2.11 Å. In the third Fe site, Fe is bonded to five O and one F atom to form a mixture of corner and edge-sharing FeO5F octahedra. The corner-sharing octahedra tilt angles range from 44–54°. There are a spread of Fe–O bond distances ranging from 1.92–1.95 Å. The Fe–F bond length is 2.07 Å. In the fourth Fe site, Fe is bonded to five O and one F atom to form a mixture of corner and edge-sharing FeO5F octahedra. The corner-sharing octahedra tilt angles range from 45–55°. There are a spread of Fe–O bond distances ranging from 1.92–2.00 Å. The Fe–F bond length is 2.10 Å. In the fifth Fe site, Fe is bonded to four O and two F atoms to form FeO4F2 octahedra that share corners with eight FeO5F octahedra and edges with two FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 45–56°. There are a spread of Fe–O bond distances ranging from 1.92–1.99 Å. There are one shorter (2.04 Å) and one longer (2.10 Å) Fe–F bond lengths. In the sixth Fe site, Fe is bonded to five O and one F atom to form FeO5F octahedra that share corners with eight FeO4F2 octahedra and edges with two FeO5F octahedra. The corner-sharing octahedra tilt angles range from 45–54°. There are a spread of Fe–O bond distances ranging from 1.94–1.98 Å. The Fe–F bond length is 2.14 Å. In the seventh Fe site, Fe is bonded to five O and one F atom to form a mixture of corner and edge-sharing FeO5F octahedra. The corner-sharing octahedra tilt angles range from 45–55°. There are a spread of Fe–O bond distances ranging from 1.93–2.07 Å. The Fe–F bond length is 2.06 Å. In the eighth Fe site, Fe is bonded to five O and one F atom to form a mixture of corner and edge-sharing FeO5F octahedra. The corner-sharing octahedra tilt angles range from 44–54°. There are a spread of Fe–O bond distances ranging from 1.93–2.07 Å. The Fe–F bond length is 2.06 Å. In the ninth Fe site, Fe is bonded to five O and one F atom to form a mixture of corner and edge-sharing FeO5F octahedra. The corner-sharing octahedra tilt angles range from 45–55°. There are a spread of Fe–O bond distances ranging from 1.93–1.98 Å. The Fe–F bond length is 2.13 Å. In the tenth Fe site, Fe is bonded to five O and one F atom to form FeO5F octahedra that share corners with eight FeO4F2 octahedra and edges with two FeO5F octahedra. The corner-sharing octahedra tilt angles range from 45–56°. There are a spread of Fe–O bond distances ranging from 1.97–1.99 Å. The Fe–F bond length is 2.14 Å. There are sixteen inequivalent O sites. In the first O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the second O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the third O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fourth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fifth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the sixth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the seventh O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the eighth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the ninth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the tenth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the eleventh O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the twelfth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the thirteenth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fourteenth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fifteenth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the sixteenth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. There are four inequivalent F sites. In the first F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the second F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the third F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the fourth F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe5(O4F)2 by Materials Project

Fe5(O4F)2 is Hydrophilite-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Fe sites. In the first Fe site, Fe is bonded to five O and one F atom to form a mixture of edge and corner-sharing FeO5F octahedra. The corner-sharing octahedra tilt angles range from 46–54°. There are a spread of Fe–O bond distances ranging from 1.93–2.00 Å. The Fe–F bond length is 2.08 Å. In the second Fe site, Fe is bonded to five O and one F atom to form a mixture of edge and corner-sharing FeO5F octahedra. The corner-sharing octahedra tilt angles range from 46–54°. There are a spread of Fe–O bond distances ranging from 1.93–2.00 Å. The Fe–F bond length is 2.10 Å. In the third Fe site, Fe is bonded to four O and two equivalent F atoms to form a mixture of edge and corner-sharing FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 46–50°. All Fe–O bond lengths are 1.98 Å. Both Fe–F bond lengths are 2.01 Å. There are four inequivalent O sites. In the first O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the second O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the third O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the fourth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. F is bonded in a distorted trigonal planar geometry to three Fe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe5(O4F)2 by Materials Project

Fe5(O4F)2 is Hydrophilite-derived structured and crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are six inequivalent Fe sites. In the first Fe site, Fe is bonded to five O and one F atom to form a mixture of edge and corner-sharing FeO5F octahedra. The corner-sharing octahedra tilt angles range from 45–55°. There are a spread of Fe–O bond distances ranging from 1.95–1.99 Å. The Fe–F bond length is 2.12 Å. In the second Fe site, Fe is bonded to five O and one F atom to form a mixture of edge and corner-sharing FeO5F octahedra. The corner-sharing octahedra tilt angles range from 45–54°. There are a spread of Fe–O bond distances ranging from 1.94–1.96 Å. The Fe–F bond length is 2.06 Å. In the third Fe site, Fe is bonded to four O and two F atoms to form a mixture of edge and corner-sharing FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 48–52°. There is two shorter (1.92 Å) and two longer (1.99 Å) Fe–O bond length. There are one shorter (2.03 Å) and one longer (2.05 Å) Fe–F bond lengths. In the fourth Fe site, Fe is bonded to five O and one F atom to form a mixture of edge and corner-sharing FeO5F octahedra. The corner-sharing octahedra tilt angles range from 45–55°. There are a spread of Fe–O bond distances ranging from 1.94–2.06 Å. The Fe–F bond length is 2.07 Å. In the fifth Fe site, Fe is bonded to five O and one F atom to form a mixture of edge and corner-sharing FeO5F octahedra. The corner-sharing octahedra tilt angles range from 45–53°. There are a spread of Fe–O bond distances ranging from 1.94–1.97 Å. The Fe–F bond length is 2.13 Å. In the sixth Fe site, Fe is bonded to five O and one F atom to form FeO5F octahedra that share corners with eight equivalent FeO4F2 octahedra and edges with two equivalent FeO5F octahedra. The corner-sharing octahedra tilt angles range from 48–52°. There is four shorter (1.96 Å) and one longer (1.98 Å) Fe–O bond length. The Fe–F bond length is 2.13 Å. There are nine inequivalent O sites. In the first O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the second O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the third O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fourth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fifth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the sixth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the seventh O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the eighth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the ninth O site, O is bonded in a trigonal planar geometry to three Fe atoms. There are three inequivalent F sites. In the first F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the second F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the third F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe10O11F9 by Materials Project

Fe10O11F9 is Hydrophilite-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are ten inequivalent Fe sites. In the first Fe site, Fe is bonded to four O and two F atoms to form FeO4F2 octahedra that share corners with eight FeO4F2 octahedra and edges with two FeO3F3 octahedra. The corner-sharing octahedra tilt angles range from 47–56°. There are a spread of Fe–O bond distances ranging from 1.96–2.04 Å. Both Fe–F bond lengths are 2.10 Å. In the second Fe site, Fe is bonded to three O and three F atoms to form a mixture of edge and corner-sharing FeO3F3 octahedra. The corner-sharing octahedra tilt angles range from 44–54°. There are a spread of Fe–O bond distances ranging from 1.92–1.96 Å. There are a spread of Fe–F bond distances ranging from 2.04–2.17 Å. In the third Fe site, Fe is bonded to three O and three F atoms to form a mixture of edge and corner-sharing FeO3F3 octahedra. The corner-sharing octahedra tilt angles range from 44–55°. All Fe–O bond lengths are 1.94 Å. There are a spread of Fe–F bond distances ranging from 2.13–2.17 Å. In the fourth Fe site, Fe is bonded to three O and three F atoms to form a mixture of edge and corner-sharing FeO3F3 octahedra. The corner-sharing octahedra tilt angles range from 44–56°. There are a spread of Fe–O bond distances ranging from 1.93–1.95 Å. There are a spread of Fe–F bond distances ranging from 2.14–2.17 Å. In the fifth Fe site, Fe is bonded to three O and three F atoms to form FeO3F3 octahedra that share corners with eight FeO3F3 octahedra and edges with two FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 41–55°. There are a spread of Fe–O bond distances ranging from 1.92–1.94 Å. There are a spread of Fe–F bond distances ranging from 2.11–2.16 Å. In the sixth Fe site, Fe is bonded to four O and two F atoms to form a mixture of edge and corner-sharing FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 44–56°. There are a spread of Fe–O bond distances ranging from 1.95–1.97 Å. There are one shorter (2.16 Å) and one longer (2.21 Å) Fe–F bond lengths. In the seventh Fe site, Fe is bonded to three O and three F atoms to form a mixture of edge and corner-sharing FeO3F3 octahedra. The corner-sharing octahedra tilt angles range from 46–55°. There are a spread of Fe–O bond distances ranging from 1.95–1.97 Å. There are a spread of Fe–F bond distances ranging from 2.07–2.17 Å. In the eighth Fe site, Fe is bonded to three O and three F atoms to form FeO3F3 octahedra that share corners with eight FeO3F3 octahedra and edges with two FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 44–55°. There is one shorter (1.94 Å) and two longer (1.96 Å) Fe–O bond length. There are a spread of Fe–F bond distances ranging from 2.03–2.21 Å. In the ninth Fe site, Fe is bonded to three O and three F atoms to form FeO3F3 octahedra that share corners with eight FeO3F3 octahedra and edges with two FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 44–56°. There are a spread of Fe–O bond distances ranging from 1.91–1.96 Å. There are a spread of Fe–F bond distances ranging from 2.11–2.18 Å. In the tenth Fe site, Fe is bonded to four O and two F atoms to form FeO4F2 octahedra that share corners with eight FeO4F2 octahedra and edges with two FeO3F3 octahedra. The corner-sharing octahedra tilt angles range from 41–53°. There are a spread of Fe–O bond distances ranging from 1.96–2.00 Å. There are one shorter (2.18 Å) and one longer (2.19 Å) Fe–F bond lengths. There are eleven inequivalent O sites. In the first O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the second O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the third O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fourth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fifth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the sixth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the seventh O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the eighth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the ninth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the tenth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the eleventh O site, O is bonded in a trigonal planar geometry to three Fe atoms. There are nine inequivalent F sites. In the first F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the second F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the third F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the fourth F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the fifth F site, F is bonded in a distorted T-shaped geometry to three Fe atoms. In the sixth F site, F is bonded in a distorted T-shaped geometry to three Fe atoms. In the seventh F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the eighth F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the ninth F site, F is bonded in a distorted T-shaped geometry to three Fe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe6O7F5 by Materials Project

Fe6O7F5 is Hydrophilite-derived structured and crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are four inequivalent Fe sites. In the first Fe site, Fe is bonded to three O and three F atoms to form FeO3F3 octahedra that share corners with eight FeO4F2 octahedra and edges with two FeO3F3 octahedra. The corner-sharing octahedra tilt angles range from 44–56°. There are a spread of Fe–O bond distances ranging from 1.92–2.00 Å. There are a spread of Fe–F bond distances ranging from 2.04–2.08 Å. In the second Fe site, Fe is bonded to three O and three F atoms to form FeO3F3 octahedra that share corners with eight equivalent FeO4F2 octahedra and edges with two equivalent FeO3F3 octahedra. The corner-sharing octahedra tilt angles range from 43–55°. There is one shorter (1.92 Å) and two longer (1.95 Å) Fe–O bond length. There are one shorter (2.08 Å) and two longer (2.13 Å) Fe–F bond lengths. In the third Fe site, Fe is bonded to four O and two F atoms to form FeO4F2 octahedra that share corners with eight equivalent FeO3F3 octahedra and edges with two equivalent FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 44–51°. All Fe–O bond lengths are 1.92 Å. There are one shorter (2.14 Å) and one longer (2.18 Å) Fe–F bond lengths. In the fourth Fe site, Fe is bonded to four O and two F atoms to form FeO4F2 octahedra that share corners with eight FeO3F3 octahedra and edges with two FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 43–56°. There are a spread of Fe–O bond distances ranging from 1.96–2.01 Å. There are one shorter (2.14 Å) and one longer (2.32 Å) Fe–F bond lengths. There are four inequivalent O sites. In the first O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the second O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the third O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fourth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. There are four inequivalent F sites. In the first F site, F is bonded in a trigonal planar geometry to three Fe atoms. In the second F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the third F site, F is bonded in a trigonal planar geometry to three Fe atoms. In the fourth F site, F is bonded in a distorted T-shaped geometry to three Fe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe4O3F5 by Materials Project

Fe4O3F5 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are four inequivalent Fe+2.75+ sites. In the first Fe+2.75+ site, Fe+2.75+ is bonded to two O2- and four F1- atoms to form distorted FeO2F4 octahedra that share corners with six FeO2F4 octahedra, a cornercorner with one FeO3F2 square pyramid, and edges with two equivalent FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 48–57°. There is one shorter (1.84 Å) and one longer (1.97 Å) Fe–O bond length. There are a spread of Fe–F bond distances ranging from 2.01–2.31 Å. In the second Fe+2.75+ site, Fe+2.75+ is bonded to two O2- and four F1- atoms to form FeO2F4 octahedra that share corners with six FeO2F4 octahedra, corners with two equivalent FeO3F2 square pyramids, and edges with two equivalent FeO3F2 square pyramids. The corner-sharing octahedra tilt angles range from 48–57°. There are one shorter (2.04 Å) and one longer (2.06 Å) Fe–O bond lengths. There are a spread of Fe–F bond distances ranging from 2.09–2.21 Å. In the third Fe+2.75+ site, Fe+2.75+ is bonded to three O2- and two F1- atoms to form distorted FeO3F2 square pyramids that share corners with four FeO2F4 octahedra, corners with two equivalent FeO3F2 square pyramids, and edges with two equivalent FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 40–56°. There are a spread of Fe–O bond distances ranging from 1.88–1.96 Å. There are one shorter (2.05 Å) and one longer (2.11 Å) Fe–F bond lengths. In the fourth Fe+2.75+ site, Fe+2.75+ is bonded to two equivalent O2- and four F1- atoms to form FeO2F4 octahedra that share corners with six FeO2F4 octahedra, a cornercorner with one FeO3F2 square pyramid, and edges with two equivalent FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 49–52°. There is one shorter (1.93 Å) and one longer (1.95 Å) Fe–O bond length. There are a spread of Fe–F bond distances ranging from 2.03–2.06 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to three Fe+2.75+ atoms. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to three Fe+2.75+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to three Fe+2.75+ atoms. There are five inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted trigonal planar geometry to three Fe+2.75+ atoms. In the second F1- site, F1- is bonded in a distorted trigonal planar geometry to three Fe+2.75+ atoms. In the third F1- site, F1- is bonded in a water-like geometry to two Fe+2.75+ atoms. In the fourth F1- site, F1- is bonded in a distorted trigonal planar geometry to three Fe+2.75+ atoms. In the fifth F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.75+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe3OF5 by Materials Project

Fe3OF5 is zeta iron carbide-derived structured and crystallizes in the orthorhombic Pmn2_1 space group. The structure is three-dimensional. there are three inequivalent Fe+2.33+ sites. In the first Fe+2.33+ site, Fe+2.33+ is bonded to one O2- and five F1- atoms to form FeOF5 octahedra that share corners with eight FeF6 octahedra and edges with two equivalent FeOF5 octahedra. The corner-sharing octahedra tilt angles range from 48–56°. The Fe–O bond length is 2.03 Å. There are a spread of Fe–F bond distances ranging from 2.08–2.15 Å. In the second Fe+2.33+ site, Fe+2.33+ is bonded to six F1- atoms to form FeF6 octahedra that share corners with eight FeOF5 octahedra and edges with two equivalent FeF6 octahedra. The corner-sharing octahedra tilt angles range from 46–49°. There are a spread of Fe–F bond distances ranging from 2.03–2.14 Å. In the third Fe+2.33+ site, Fe+2.33+ is bonded to two equivalent O2- and four F1- atoms to form FeO2F4 octahedra that share corners with eight FeOF5 octahedra and edges with two equivalent FeO2F4 octahedra. The corner-sharing octahedra tilt angles range from 46–56°. Both Fe–O bond lengths are 1.92 Å. There are a spread of Fe–F bond distances ranging from 2.00–2.19 Å. O2- is bonded in a trigonal planar geometry to three Fe+2.33+ atoms. There are five inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted trigonal planar geometry to three Fe+2.33+ atoms. In the second F1- site, F1- is bonded in a distorted trigonal planar geometry to three Fe+2.33+ atoms. In the third F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.33+ atoms. In the fourth F1- site, F1- is bonded in a 3-coordinate geometry to three Fe+2.33+ atoms. In the fifth F1- site, F1- is bonded in a distorted trigonal planar geometry to three Fe+2.33+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe5O7F3 by Materials Project

Fe5O7F3 is Hydrophilite-derived structured and crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are five inequivalent Fe sites. In the first Fe site, Fe is bonded to four O and two F atoms to form a mixture of edge and corner-sharing FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 47–55°. There are a spread of Fe–O bond distances ranging from 1.91–2.01 Å. There are one shorter (2.06 Å) and one longer (2.07 Å) Fe–F bond lengths. In the second Fe site, Fe is bonded to four O and two equivalent F atoms to form a mixture of edge and corner-sharing FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 44–55°. There are a spread of Fe–O bond distances ranging from 1.94–1.98 Å. Both Fe–F bond lengths are 2.12 Å. In the third Fe site, Fe is bonded to five O and one F atom to form a mixture of edge and corner-sharing FeO5F octahedra. The corner-sharing octahedra tilt angles range from 46–56°. There is one shorter (1.96 Å) and four longer (1.97 Å) Fe–O bond length. The Fe–F bond length is 2.10 Å. In the fourth Fe site, Fe is bonded to four O and two equivalent F atoms to form FeO4F2 octahedra that share corners with eight FeO4F2 octahedra and edges with two FeO5F octahedra. The corner-sharing octahedra tilt angles range from 46–59°. There are a spread of Fe–O bond distances ranging from 1.94–1.97 Å. There are one shorter (2.10 Å) and one longer (2.11 Å) Fe–F bond lengths. In the fifth Fe site, Fe is bonded to four O and two F atoms to form FeO4F2 octahedra that share corners with eight FeO5F octahedra and edges with two FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 46–59°. There are a spread of Fe–O bond distances ranging from 1.91–2.01 Å. There are one shorter (2.07 Å) and one longer (2.10 Å) Fe–F bond lengths. There are seven inequivalent O sites. In the first O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the second O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the third O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fourth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fifth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the sixth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the seventh O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. There are three inequivalent F sites. In the first F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the second F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the third F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe5(O4F)2 by Materials Project

Fe5(O4F)2 is Hydrophilite-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are ten inequivalent Fe sites. In the first Fe site, Fe is bonded to five O and one F atom to form FeO5F octahedra that share corners with eight FeO4F2 octahedra and edges with two FeO5F octahedra. The corner-sharing octahedra tilt angles range from 48–55°. There are a spread of Fe–O bond distances ranging from 1.93–2.05 Å. The Fe–F bond length is 2.10 Å. In the second Fe site, Fe is bonded to five O and one F atom to form FeO5F octahedra that share corners with eight FeO4F2 octahedra and edges with two FeO5F octahedra. The corner-sharing octahedra tilt angles range from 47–53°. There are a spread of Fe–O bond distances ranging from 1.92–1.97 Å. The Fe–F bond length is 2.21 Å. In the third Fe site, Fe is bonded to five O and one F atom to form FeO5F octahedra that share corners with eight FeO4F2 octahedra and edges with two FeO5F octahedra. The corner-sharing octahedra tilt angles range from 48–55°. There are a spread of Fe–O bond distances ranging from 1.96–2.00 Å. The Fe–F bond length is 2.11 Å. In the fourth Fe site, Fe is bonded to five O and one F atom to form FeO5F octahedra that share corners with eight FeO4F2 octahedra and edges with two FeO5F octahedra. The corner-sharing octahedra tilt angles range from 44–52°. There are a spread of Fe–O bond distances ranging from 1.77–1.92 Å. The Fe–F bond length is 2.08 Å. In the fifth Fe site, Fe is bonded to five O and one F atom to form FeO5F octahedra that share corners with eight FeO4F2 octahedra and edges with two FeO5F octahedra. The corner-sharing octahedra tilt angles range from 44–54°. There are a spread of Fe–O bond distances ranging from 1.91–2.03 Å. The Fe–F bond length is 2.14 Å. In the sixth Fe site, Fe is bonded to five O and one F atom to form FeO5F octahedra that share corners with eight FeO5F octahedra and edges with two FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 45–55°. There are a spread of Fe–O bond distances ranging from 1.96–2.00 Å. The Fe–F bond length is 2.07 Å. In the seventh Fe site, Fe is bonded to five O and one F atom to form a mixture of edge and corner-sharing FeO5F octahedra. The corner-sharing octahedra tilt angles range from 47–55°. There are a spread of Fe–O bond distances ranging from 1.91–2.03 Å. The Fe–F bond length is 2.09 Å. In the eighth Fe site, Fe is bonded to five O and one F atom to form FeO5F octahedra that share corners with eight FeO5F octahedra and edges with two FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 44–55°. There are a spread of Fe–O bond distances ranging from 1.89–1.97 Å. The Fe–F bond length is 2.16 Å. In the ninth Fe site, Fe is bonded to four O and two F atoms to form FeO4F2 octahedra that share corners with eight FeO5F octahedra and edges with two FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 47–53°. There are a spread of Fe–O bond distances ranging from 1.93–2.01 Å. There are one shorter (2.04 Å) and one longer (2.05 Å) Fe–F bond lengths. In the tenth Fe site, Fe is bonded to four O and two F atoms to form FeO4F2 octahedra that share corners with eight FeO5F octahedra and edges with two FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 44–52°. There are a spread of Fe–O bond distances ranging from 1.91–2.05 Å. Both Fe–F bond lengths are 2.07 Å. There are sixteen inequivalent O sites. In the first O site, O is bonded in a 3-coordinate geometry to three Fe atoms. In the second O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the third O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fourth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fifth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the sixth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the seventh O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the eighth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the ninth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the tenth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the eleventh O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the twelfth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the thirteenth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fourteenth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the fifteenth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the sixteenth O site, O is bonded in a trigonal planar geometry to three Fe atoms. There are four inequivalent F sites. In the first F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the second F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the third F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the fourth F site, F is bonded in a distorted T-shaped geometry to three Fe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Fe5(O4F)2 by Materials Project

Fe5(O4F)2 is Hydrophilite-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are ten inequivalent Fe sites. In the first Fe site, Fe is bonded to five O and one F atom to form FeO5F octahedra that share corners with eight FeO5F octahedra and edges with two FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 46–56°. There are a spread of Fe–O bond distances ranging from 1.92–2.08 Å. The Fe–F bond length is 2.03 Å. In the second Fe site, Fe is bonded to six O atoms to form a mixture of edge and corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 46–56°. There are a spread of Fe–O bond distances ranging from 1.94–2.13 Å. In the third Fe site, Fe is bonded to four O and two F atoms to form a mixture of edge and corner-sharing FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 45–55°. There are a spread of Fe–O bond distances ranging from 1.93–1.99 Å. There are one shorter (2.05 Å) and one longer (2.10 Å) Fe–F bond lengths. In the fourth Fe site, Fe is bonded to five O and one F atom to form FeO5F octahedra that share corners with eight FeO4F2 octahedra and edges with two FeO6 octahedra. The corner-sharing octahedra tilt angles range from 44–57°. There are a spread of Fe–O bond distances ranging from 1.95–1.98 Å. The Fe–F bond length is 2.16 Å. In the fifth Fe site, Fe is bonded to five O and one F atom to form FeO5F octahedra that share corners with eight FeO4F2 octahedra and edges with two FeO5F octahedra. The corner-sharing octahedra tilt angles range from 45–53°. There are a spread of Fe–O bond distances ranging from 1.90–1.99 Å. The Fe–F bond length is 2.15 Å. In the sixth Fe site, Fe is bonded to four O and two F atoms to form FeO4F2 octahedra that share corners with eight FeO6 octahedra and edges with two FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 46–53°. There are a spread of Fe–O bond distances ranging from 1.94–1.96 Å. Both Fe–F bond lengths are 2.05 Å. In the seventh Fe site, Fe is bonded to five O and one F atom to form FeO5F octahedra that share corners with eight FeO5F octahedra and edges with two FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 48–53°. There are a spread of Fe–O bond distances ranging from 1.94–2.00 Å. The Fe–F bond length is 2.09 Å. In the eighth Fe site, Fe is bonded to five O and one F atom to form a mixture of edge and corner-sharing FeO5F octahedra. The corner-sharing octahedra tilt angles range from 45–55°. There are a spread of Fe–O bond distances ranging from 1.94–1.99 Å. The Fe–F bond length is 2.11 Å. In the ninth Fe site, Fe is bonded to four O and two F atoms to form FeO4F2 octahedra that share corners with eight FeO6 octahedra and edges with two FeO4F2 octahedra. The corner-sharing octahedra tilt angles range from 44–57°. There are a spread of Fe–O bond distances ranging from 1.92–2.00 Å. There are one shorter (2.08 Å) and one longer (2.09 Å) Fe–F bond lengths. In the tenth Fe site, Fe is bonded to five O and one F atom to form a mixture of edge and corner-sharing FeO5F octahedra. The corner-sharing octahedra tilt angles range from 45–56°. There are a spread of Fe–O bond distances ranging from 1.88–1.96 Å. The Fe–F bond length is 2.11 Å. There are sixteen inequivalent O sites. In the first O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the second O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the third O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the fourth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fifth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the sixth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the seventh O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the eighth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the ninth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the tenth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the eleventh O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the twelfth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the thirteenth O site, O is bonded in a trigonal planar geometry to three Fe atoms. In the fourteenth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the fifteenth O site, O is bonded in a distorted trigonal planar geometry to three Fe atoms. In the sixteenth O site, O is bonded in a trigonal planar geometry to three Fe atoms. There are four inequivalent F sites. In the first F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the second F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the third F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms. In the fourth F site, F is bonded in a distorted trigonal planar geometry to three Fe atoms.

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