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DOE OSTI2020

Materials Data on Rb2Mo(OF2)2 by Materials Project

Rb2MoO2F4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 11-coordinate geometry to four equivalent O2- and seven F1- atoms. There are two shorter (3.03 Å) and two longer (3.31 Å) Rb–O bond lengths. There are a spread of Rb–F bond distances ranging from 2.86–3.27 Å. In the second Rb1+ site, Rb1+ is bonded in a 11-coordinate geometry to four equivalent O2- and seven F1- atoms. There are two shorter (3.09 Å) and two longer (3.20 Å) Rb–O bond lengths. There are a spread of Rb–F bond distances ranging from 3.04–3.14 Å. Mo6+ is bonded in an octahedral geometry to two equivalent O2- and four F1- atoms. Both Mo–O bond lengths are 1.82 Å. There are a spread of Mo–F bond distances ranging from 1.94–2.00 Å. O2- is bonded in a distorted single-bond geometry to four Rb1+ and one Mo6+ atom. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a 1-coordinate geometry to three Rb1+ and one Mo6+ atom. In the second F1- site, F1- is bonded in a distorted single-bond geometry to three Rb1+ and one Mo6+ atom. In the third F1- site, F1- is bonded in a distorted single-bond geometry to four Rb1+ and one Mo6+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KB6H4(OF3)2 by Materials Project

KB4H4(OF2)2(FB1)2 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of eight boron monofluoride molecules and two KB4H4(OF2)2 clusters. In one of the KB4H4(OF2)2 clusters, K is bonded in a 7-coordinate geometry to three O and four F atoms. There are a spread of K–O bond distances ranging from 2.71–2.92 Å. There are a spread of K–F bond distances ranging from 2.69–3.02 Å. There are four inequivalent B sites. In the first B site, B is bonded in a single-bond geometry to one F atom. The B–F bond length is 1.40 Å. In the second B site, B is bonded in a single-bond geometry to one F atom. The B–F bond length is 1.40 Å. In the third B site, B is bonded in a single-bond geometry to one F atom. The B–F bond length is 1.39 Å. In the fourth B site, B is bonded in a single-bond geometry to one F atom. The B–F bond length is 1.39 Å. There are four inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the third H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the fourth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.97 Å. There are two inequivalent O sites. In the first O site, O is bonded in a water-like geometry to one K and two H atoms. In the second O site, O is bonded in a water-like geometry to two equivalent K and two H atoms. There are four inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one K and one B atom. In the second F site, F is bonded in a distorted single-bond geometry to one K and one B atom. In the third F site, F is bonded in a distorted single-bond geometry to one K and one B atom. In the fourth F site, F is bonded in a single-bond geometry to one K and one B atom. In one of the KB4H4(OF2)2 clusters, K is bonded in a 7-coordinate geometry to three O and four F atoms. There are a spread of K–O bond distances ranging from 2.77–2.86 Å. There are a spread of K–F bond distances ranging from 2.82–3.19 Å. There are four inequivalent B sites. In the first B site, B is bonded in a single-bond geometry to one F atom. The B–F bond length is 1.40 Å. In the second B site, B is bonded in a single-bond geometry to one F atom. The B–F bond length is 1.40 Å. In the third B site, B is bonded in a single-bond geometry to one F atom. The B–F bond length is 1.41 Å. In the fourth B site, B is bonded in a single-bond geometry to one F atom. The B–F bond length is 1.40 Å. There are four inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the third H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. In the fourth H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.98 Å. There are two inequivalent O sites. In the first O site, O is bonded in a distorted water-like geometry to two equivalent K and two H atoms. In the second O site, O is bonded in a water-like geometry to one K and two H atoms. There are four inequivalent F sites. In the first F site, F is bonded in a distorted single-bond geometry to one K and one B atom. In the second F site, F is bonded in a single-bond geometry to one K and one B atom. In the third F site, F is bonded in a single-bond geometry to one K and one B atom. In the fourth F site, F is bonded in a distorted single-bond geometry to one K and one B atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SbTe7SXeCl(OF4)9 by Materials Project

XeTeSCl(OF2)3SbTe6(OF5)6 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two SbTe6(OF5)6 clusters and two XeTeSCl(OF2)3 clusters. In one of the SbTe6(OF5)6 clusters, Sb is bonded to six O atoms to form SbO6 octahedra that share corners with six TeOF5 octahedra. The corner-sharing octahedra tilt angles range from 36–42°. There are a spread of Sb–O bond distances ranging from 1.99–2.01 Å. There are three inequivalent Te sites. In the first Te site, Te is bonded to one O and five F atoms to form TeOF5 octahedra that share a cornercorner with one SbO6 octahedra. The corner-sharing octahedral tilt angles are 42°. The Te–O bond length is 1.90 Å. There are a spread of Te–F bond distances ranging from 1.87–1.89 Å. In the second Te site, Te is bonded to one O and five F atoms to form TeOF5 octahedra that share a cornercorner with one SbO6 octahedra. The corner-sharing octahedral tilt angles are 36°. The Te–O bond length is 1.88 Å. There are a spread of Te–F bond distances ranging from 1.87–1.89 Å. In the third Te site, Te is bonded to one O and five F atoms to form TeOF5 octahedra that share a cornercorner with one SbO6 octahedra. The corner-sharing octahedral tilt angles are 40°. The Te–O bond length is 1.88 Å. There is one shorter (1.87 Å) and four longer (1.88 Å) Te–F bond length. There are three inequivalent O sites. In the first O site, O is bonded in a bent 150 degrees geometry to one Sb and one Te atom. In the second O site, O is bonded in a bent 150 degrees geometry to one Sb and one Te atom. In the third O site, O is bonded in a bent 150 degrees geometry to one Sb and one Te atom. There are fifteen inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one Te atom. In the second F site, F is bonded in a single-bond geometry to one Te atom. In the third F site, F is bonded in a single-bond geometry to one Te atom. In the fourth F site, F is bonded in a single-bond geometry to one Te atom. In the fifth F site, F is bonded in a single-bond geometry to one Te atom. In the sixth F site, F is bonded in a single-bond geometry to one Te atom. In the seventh F site, F is bonded in a single-bond geometry to one Te atom. In the eighth F site, F is bonded in a single-bond geometry to one Te atom. In the ninth F site, F is bonded in a single-bond geometry to one Te atom. In the tenth F site, F is bonded in a single-bond geometry to one Te atom. In the eleventh F site, F is bonded in a single-bond geometry to one Te atom. In the twelfth F site, F is bonded in a single-bond geometry to one Te atom. In the thirteenth F site, F is bonded in a single-bond geometry to one Te atom. In the fourteenth F site, F is bonded in a single-bond geometry to one Te atom. In the fifteenth F site, F is bonded in a single-bond geometry to one Te atom. In one of the SbTe6(OF5)6 clusters, Sb is bonded to six O atoms to form SbO6 octahedra that share corners with six TeOF5 octahedra. The corner-sharing octahedral tilt angles are 42°. There are four shorter (2.00 Å) and two longer (2.01 Å) Sb–O bond lengths. There are three inequivalent Te sites. In the first Te site, Te is bonded to one O and five F atoms to form TeOF5 octahedra that share a cornercorner with one SbO6 octahedra. The corner-sharing octahedral tilt angles are 42°. The Te–O bond length is 1.89 Å. There is three shorter (1.87 Å) and two longer (1.88 Å) Te–F bond length. In the second Te site, Te is bonded to one O and five F atoms to form TeOF5 octahedra that share a cornercorner with one SbO6 octahedra. The corner-sharing octahedral tilt angles are 42°. The Te–O bond length is 1.89 Å. There are a spread of Te–F bond distances ranging from 1.87–1.89 Å. In the third Te site, Te is bonded to one O and five F atoms to form TeOF5 octahedra that share a cornercorner with one SbO6 octahedra. The corner-sharing octahedral tilt angles are 42°. The Te–O bond length is 1.89 Å. There are a spread of Te–F bond distances ranging from 1.87–1.89 Å. There are three inequivalent O sites. In the first O site, O is bonded in a bent 150 degrees geometry to one Sb and one Te atom. In the second O site, O is bonded in a bent 150 degrees geometry to one Sb and one Te atom. In the third O site, O is bonded in a bent 150 degrees geometry to one Sb and one Te atom. There are fifteen inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one Te atom. In the second F site, F is bonded in a single-bond geometry to one Te atom. In the third F site, F is bonded in a single-bond geometry to one Te atom. In the fourth F site, F is bonded in a single-bond geometry to one Te atom. In the fifth F site, F is bonded in a single-bond geometry to one Te atom. In the sixth F site, F is bonded in a single-bond geometry to one Te atom. In the seventh F site, F is bonded in a single-bond geometry to one Te atom. In the eighth F site, F is bonded in a single-bond geometry to one Te atom. In the ninth F site, F is bonded in a single-bond geometry to one Te atom. In the tenth F site, F is bonded in a single-bond geometry to one Te atom. In the eleventh F site, F is bonded in a single-bond geometry to one Te atom. In the twelfth F site, F is bonded in a single-bond geometry to one Te atom. In the thirteenth F site, F is bonded in a single-bond geometry to one Te atom. In the fourteenth F site, F is bonded in a single-bond geometry to one Te atom. In the fifteenth F site, F is bonded in a single-bond geometry to one Te atom. In each XeTeSCl(OF2)3 cluster, Xe is bonded in a linear geometry to two O atoms. There are one shorter (2.07 Å) and one longer (2.45 Å) Xe–O bond lengths. Te is bonded in an octahedral geometry to one O and five F atoms. The Te–O bond length is 1.98 Å. There are a spread of Te–F bond distances ranging from 1.86–1.88 Å. S is bonded in a distorted tetrahedral geometry to two O, one Cl, and one F atom. There is one shorter (1.42 Å) and one longer (1.46 Å) S–O bond length. The S–Cl bond length is 1.96 Å. The S–F bond length is 1.56 Å. There are three inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one S atom. In the second O site, O is bonded in a bent 120 degrees geometry to one Xe and one Te atom. In the third O site, O is bonded in a distorted single-bond geometry to one Xe and one S atom. Cl is bonded in a single-bond geometry to one S atom. There are six inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one Te atom. In the second F site, F is bonded in a single-bond geometry to one Te atom. In the third F site, F is bonded in a single-bond geometry to one Te atom. In the fourth F site, F is bonded in a single-bond geometry to one Te atom. In the fifth F site, F is bonded in a single-bond geometry to one Te atom. In the sixth F site, F is bonded in a single-bond geometry to one S atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SbTe7SXeCl(OF4)9 by Materials Project

XeTeSCl(OF2)3SbTe6(OF5)6 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two SbTe6(OF5)6 clusters and two XeTeSCl(OF2)3 clusters. In one of the SbTe6(OF5)6 clusters, Sb is bonded to six O atoms to form SbO6 octahedra that share corners with six TeOF5 octahedra. The corner-sharing octahedra tilt angles range from 40–44°. There are a spread of Sb–O bond distances ranging from 1.99–2.01 Å. There are three inequivalent Te sites. In the first Te site, Te is bonded to one O and five F atoms to form TeOF5 octahedra that share a cornercorner with one SbO6 octahedra. The corner-sharing octahedral tilt angles are 40°. The Te–O bond length is 1.88 Å. There are a spread of Te–F bond distances ranging from 1.87–1.89 Å. In the second Te site, Te is bonded to one O and five F atoms to form TeOF5 octahedra that share a cornercorner with one SbO6 octahedra. The corner-sharing octahedral tilt angles are 43°. The Te–O bond length is 1.90 Å. There is three shorter (1.87 Å) and two longer (1.88 Å) Te–F bond length. In the third Te site, Te is bonded to one O and five F atoms to form TeOF5 octahedra that share a cornercorner with one SbO6 octahedra. The corner-sharing octahedral tilt angles are 44°. The Te–O bond length is 1.89 Å. There are a spread of Te–F bond distances ranging from 1.87–1.89 Å. There are three inequivalent O sites. In the first O site, O is bonded in a bent 150 degrees geometry to one Sb and one Te atom. In the second O site, O is bonded in a bent 150 degrees geometry to one Sb and one Te atom. In the third O site, O is bonded in a bent 150 degrees geometry to one Sb and one Te atom. There are fifteen inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one Te atom. In the second F site, F is bonded in a single-bond geometry to one Te atom. In the third F site, F is bonded in a single-bond geometry to one Te atom. In the fourth F site, F is bonded in a single-bond geometry to one Te atom. In the fifth F site, F is bonded in a single-bond geometry to one Te atom. In the sixth F site, F is bonded in a single-bond geometry to one Te atom. In the seventh F site, F is bonded in a single-bond geometry to one Te atom. In the eighth F site, F is bonded in a single-bond geometry to one Te atom. In the ninth F site, F is bonded in a single-bond geometry to one Te atom. In the tenth F site, F is bonded in a single-bond geometry to one Te atom. In the eleventh F site, F is bonded in a single-bond geometry to one Te atom. In the twelfth F site, F is bonded in a single-bond geometry to one Te atom. In the thirteenth F site, F is bonded in a single-bond geometry to one Te atom. In the fourteenth F site, F is bonded in a single-bond geometry to one Te atom. In the fifteenth F site, F is bonded in a single-bond geometry to one Te atom. In one of the SbTe6(OF5)6 clusters, Sb is bonded to six O atoms to form SbO6 octahedra that share corners with six TeOF5 octahedra. The corner-sharing octahedra tilt angles range from 41–43°. There are four shorter (2.00 Å) and two longer (2.01 Å) Sb–O bond lengths. There are three inequivalent Te sites. In the first Te site, Te is bonded to one O and five F atoms to form TeOF5 octahedra that share a cornercorner with one SbO6 octahedra. The corner-sharing octahedral tilt angles are 42°. The Te–O bond length is 1.89 Å. There is two shorter (1.87 Å) and three longer (1.88 Å) Te–F bond length. In the second Te site, Te is bonded to one O and five F atoms to form TeOF5 octahedra that share a cornercorner with one SbO6 octahedra. The corner-sharing octahedral tilt angles are 43°. The Te–O bond length is 1.89 Å. There is one shorter (1.87 Å) and four longer (1.88 Å) Te–F bond length. In the third Te site, Te is bonded to one O and five F atoms to form TeOF5 octahedra that share a cornercorner with one SbO6 octahedra. The corner-sharing octahedral tilt angles are 41°. The Te–O bond length is 1.89 Å. There is two shorter (1.87 Å) and three longer (1.88 Å) Te–F bond length. There are three inequivalent O sites. In the first O site, O is bonded in a bent 150 degrees geometry to one Sb and one Te atom. In the second O site, O is bonded in a bent 150 degrees geometry to one Sb and one Te atom. In the third O site, O is bonded in a bent 150 degrees geometry to one Sb and one Te atom. There are fifteen inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one Te atom. In the second F site, F is bonded in a single-bond geometry to one Te atom. In the third F site, F is bonded in a single-bond geometry to one Te atom. In the fourth F site, F is bonded in a single-bond geometry to one Te atom. In the fifth F site, F is bonded in a single-bond geometry to one Te atom. In the sixth F site, F is bonded in a single-bond geometry to one Te atom. In the seventh F site, F is bonded in a single-bond geometry to one Te atom. In the eighth F site, F is bonded in a single-bond geometry to one Te atom. In the ninth F site, F is bonded in a single-bond geometry to one Te atom. In the tenth F site, F is bonded in a single-bond geometry to one Te atom. In the eleventh F site, F is bonded in a single-bond geometry to one Te atom. In the twelfth F site, F is bonded in a single-bond geometry to one Te atom. In the thirteenth F site, F is bonded in a single-bond geometry to one Te atom. In the fourteenth F site, F is bonded in a single-bond geometry to one Te atom. In the fifteenth F site, F is bonded in a single-bond geometry to one Te atom. In each XeTeSCl(OF2)3 cluster, Xe is bonded in a linear geometry to two O atoms. There are one shorter (2.06 Å) and one longer (2.48 Å) Xe–O bond lengths. Te is bonded in an octahedral geometry to one O and five F atoms. The Te–O bond length is 1.98 Å. There are a spread of Te–F bond distances ranging from 1.85–1.88 Å. S is bonded in a distorted tetrahedral geometry to two O, one Cl, and one F atom. There is one shorter (1.41 Å) and one longer (1.46 Å) S–O bond length. The S–Cl bond length is 1.97 Å. The S–F bond length is 1.57 Å. There are three inequivalent O sites. In the first O site, O is bonded in a bent 120 degrees geometry to one Xe and one Te atom. In the second O site, O is bonded in a distorted single-bond geometry to one Xe and one S atom. In the third O site, O is bonded in a single-bond geometry to one S atom. Cl is bonded in a single-bond geometry to one S atom. There are six inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one S atom. In the second F site, F is bonded in a single-bond geometry to one Te atom. In the third F site, F is bonded in a single-bond geometry to one Te atom. In the fourth F site, F is bonded in a single-bond geometry to one Te atom. In the fifth F site, F is bonded in a single-bond geometry to one Te atom. In the sixth F site, F is bonded in a single-bond geometry to one Te atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ZrH16C5N2O3F4 by Materials Project

ZrC5N2H14(OF2)2H2O crystallizes in the orthorhombic Aea2 space group. The structure is two-dimensional and consists of eight water molecules and two ZrC5N2H14(OF2)2 sheets oriented in the (0, 1, 0) direction. In each ZrC5N2H14(OF2)2 sheet, Zr4+ is bonded to two O2- and five F1- atoms to form edge-sharing ZrO2F5 pentagonal bipyramids. There are one shorter (2.17 Å) and one longer (2.30 Å) Zr–O bond lengths. There are a spread of Zr–F bond distances ranging from 1.98–2.19 Å. There are five inequivalent C+0.80- sites. In the first C+0.80- site, C+0.80- is bonded in a trigonal planar geometry to two N3- and one O2- atom. Both C–N bond lengths are 1.36 Å. The C–O bond length is 1.28 Å. In the second C+0.80- site, C+0.80- is bonded to one N3- and three H1+ atoms to form corner-sharing CH3N tetrahedra. The C–N bond length is 1.46 Å. All C–H bond lengths are 1.10 Å. In the third C+0.80- site, C+0.80- is bonded to one N3- and three H1+ atoms to form corner-sharing CH3N tetrahedra. The C–N bond length is 1.47 Å. There is one shorter (1.09 Å) and two longer (1.10 Å) C–H bond length. In the fourth C+0.80- site, C+0.80- is bonded to one N3- and three H1+ atoms to form corner-sharing CH3N tetrahedra. The C–N bond length is 1.46 Å. All C–H bond lengths are 1.10 Å. In the fifth C+0.80- site, C+0.80- is bonded to one N3- and three H1+ atoms to form corner-sharing CH3N tetrahedra. The C–N bond length is 1.46 Å. There is one shorter (1.09 Å) and two longer (1.10 Å) C–H bond length. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a trigonal planar geometry to three C+0.80- atoms. In the second N3- site, N3- is bonded in a trigonal planar geometry to three C+0.80- atoms. There are fourteen inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the second H1+ site, H1+ is bonded in a distorted single-bond geometry to one O2- and one F1- atom. The H–O bond length is 1.00 Å. The H–F bond length is 1.63 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one C+0.80- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.80- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.80- atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.80- atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one C+0.80- atom. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.80- atom. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.80- atom. In the tenth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.80- atom. In the eleventh H1+ site, H1+ is bonded in a single-bond geometry to one C+0.80- atom. In the twelfth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.80- atom. In the thirteenth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.80- atom. In the fourteenth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.80- atom. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted linear geometry to one Zr4+ and one C+0.80- atom. In the second O2- site, O2- is bonded in a distorted water-like geometry to one Zr4+ and two H1+ atoms. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted bent 150 degrees geometry to one Zr4+ and one H1+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom. In the fourth F1- site, F1- is bonded in a bent 120 degrees geometry to two equivalent Zr4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Mn3H24(O3F2)4 by Materials Project

Mn(H2O)6(MnH4(OF2)2)2(H2O)2 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of one manganese hexahydrate molecule, two water molecules, and two MnH4(OF2)2 clusters. In each MnH4(OF2)2 cluster, Mn+2.67+ is bonded in an octahedral geometry to two O2- and four F1- atoms. There are one shorter (2.21 Å) and one longer (2.33 Å) Mn–O bond lengths. There are a spread of Mn–F bond distances ranging from 1.88–1.91 Å. There are four inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to one Mn+2.67+ and two H1+ atoms. In the second O2- site, O2- is bonded in a distorted water-like geometry to one Mn+2.67+ and two H1+ atoms. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted single-bond geometry to one Mn+2.67+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Mn+2.67+ atom. In the third F1- site, F1- is bonded in a distorted single-bond geometry to one Mn+2.67+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one Mn+2.67+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KH4C6O3F5 by Materials Project

KC4H4(OF2)2COCF crystallizes in the monoclinic C2/c space group. The structure is one-dimensional and consists of four fluoromethane molecules; four formaldehyde molecules; and two KC4H4(OF2)2 ribbons oriented in the (0, 0, 1) direction. In each KC4H4(OF2)2 ribbon, K1+ is bonded in a 8-coordinate geometry to four equivalent O2- and four F1- atoms. There are two shorter (2.78 Å) and two longer (2.80 Å) K–O bond lengths. There are two shorter (2.97 Å) and two longer (3.25 Å) K–F bond lengths. There are two inequivalent C1+ sites. In the first C1+ site, C1+ is bonded in a single-bond geometry to one F1- atom. The C–F bond length is 1.36 Å. In the second C1+ site, C1+ is bonded in a single-bond geometry to one F1- atom. The C–F bond length is 1.36 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. O2- is bonded in a water-like geometry to two equivalent K1+ and two H1+ atoms. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one K1+ and one C1+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one K1+ and one C1+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on U2Ni2O11F12 by Materials Project

(UNi(OF2)3)4(O2)5 crystallizes in the monoclinic C2/c space group. The structure is one-dimensional and consists of four O2 clusters and two UNi(OF2)3 ribbons oriented in the (0, 0, 1) direction. In each O2 cluster, there are three inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to two O atoms. There is one shorter (1.23 Å) and one longer (2.04 Å) O–O bond length. In the second O site, O is bonded in a distorted linear geometry to two equivalent O atoms. In the third O site, O is bonded in a single-bond geometry to one O atom. In each UNi(OF2)3 ribbon, U is bonded in a 9-coordinate geometry to nine F atoms. There are a spread of U–F bond distances ranging from 2.02–2.46 Å. Ni is bonded in a distorted trigonal bipyramidal geometry to three O and two F atoms. There are a spread of Ni–O bond distances ranging from 1.70–2.01 Å. There is one shorter (1.93 Å) and one longer (1.99 Å) Ni–F bond length. There are three inequivalent O sites. In the first O site, O is bonded in a 1-coordinate geometry to one Ni and one O atom. The O–O bond length is 1.29 Å. In the second O site, O is bonded in a 2-coordinate geometry to one Ni and one O atom. In the third O site, O is bonded in a single-bond geometry to one Ni atom. There are seven inequivalent F sites. In the first F site, F is bonded in a bent 120 degrees geometry to two equivalent U atoms. In the second F site, F is bonded in a single-bond geometry to one U atom. In the third F site, F is bonded in a bent 150 degrees geometry to one U and one Ni atom. In the fourth F site, F is bonded in a bent 150 degrees geometry to one U and one Ni atom. In the fifth F site, F is bonded in a bent 120 degrees geometry to two equivalent U atoms. In the sixth F site, F is bonded in a bent 120 degrees geometry to two equivalent U atoms. In the seventh F site, F is bonded in a bent 120 degrees geometry to two equivalent U atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HfO3F4 by Materials Project

(Hf(OF2)2)2O2 crystallizes in the monoclinic P2_1/c space group. The structure is one-dimensional and consists of four water molecules and two Hf(OF2)2 ribbons oriented in the (1, 0, 0) direction. In each Hf(OF2)2 ribbon, Hf is bonded in a 8-coordinate geometry to two O and six F atoms. There are one shorter (2.27 Å) and one longer (2.33 Å) Hf–O bond lengths. There are a spread of Hf–F bond distances ranging from 1.95–2.19 Å. There are two inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one Hf atom. In the second O site, O is bonded in a single-bond geometry to one Hf atom. There are four inequivalent F sites. In the first F site, F is bonded in a water-like geometry to two equivalent Hf atoms. In the second F site, F is bonded in a water-like geometry to two equivalent Hf atoms. In the third F site, F is bonded in a single-bond geometry to one Hf atom. In the fourth F site, F is bonded in a single-bond geometry to one Hf atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ZrMnO5F6 by Materials Project

ZrMn(OF2)3O2 crystallizes in the monoclinic C2/m space group. The structure is one-dimensional and consists of four oxygen molecules and two ZrMn(OF2)3 ribbons oriented in the (0, 1, 0) direction. In each ZrMn(OF2)3 ribbon, Zr is bonded in a 8-coordinate geometry to eight F atoms. There are a spread of Zr–F bond distances ranging from 2.02–2.23 Å. Mn is bonded in a 5-coordinate geometry to three O and two equivalent F atoms. There is one shorter (1.58 Å) and two longer (1.59 Å) Mn–O bond length. Both Mn–F bond lengths are 2.01 Å. There are two inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one Mn atom. In the second O site, O is bonded in a single-bond geometry to one Mn atom. There are four inequivalent F sites. In the first F site, F is bonded in a bent 120 degrees geometry to two equivalent Zr atoms. In the second F site, F is bonded in a bent 120 degrees geometry to two equivalent Zr atoms. In the third F site, F is bonded in a bent 150 degrees geometry to one Zr and one Mn atom. In the fourth F site, F is bonded in a single-bond geometry to one Zr atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on RbHfC(OF)4 by Materials Project

RbHfC(OF2)2O2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional and consists of four hydrogen peroxide molecules and one RbHfC(OF2)2 framework. In the RbHfC(OF2)2 framework, Rb is bonded in a 6-coordinate geometry to two O and four F atoms. There are one shorter (3.13 Å) and one longer (3.29 Å) Rb–O bond lengths. There are a spread of Rb–F bond distances ranging from 2.79–3.40 Å. Hf is bonded to two O and five F atoms to form distorted edge-sharing HfO2F5 pentagonal bipyramids. Both Hf–O bond lengths are 2.29 Å. There are a spread of Hf–F bond distances ranging from 1.97–2.24 Å. C is bonded in a distorted bent 120 degrees geometry to two O atoms. Both C–O bond lengths are 1.27 Å. There are two inequivalent O sites. In the first O site, O is bonded in a 1-coordinate geometry to one Rb, one Hf, and one C atom. In the second O site, O is bonded in a 2-coordinate geometry to one Rb, one Hf, and one C atom. There are four inequivalent F sites. In the first F site, F is bonded in a 1-coordinate geometry to two equivalent Rb and one Hf atom. In the second F site, F is bonded in a distorted bent 150 degrees geometry to one Rb and one Hf atom. In the third F site, F is bonded in a water-like geometry to two equivalent Hf atoms. In the fourth F site, F is bonded in a distorted bent 150 degrees geometry to one Rb and one Hf atom.

36 MATERIALS SCIENCE↗
NASA NTRS1971

Radioactive nondestructive test method

Various radioisotope techniques were used as diagnostic tools for determining the performance of spacecraft propulsion feed system elements. Applications were studied in four tasks. The first two required experimental testing involving the propellant liquid oxygen difluoride (OF2): the neutron activation analysis of dissolved or suspended metals, and the use of radioactive tracers to evaluate the probability of constrictions in passive components (orifices and filters) becoming clogged by matter dissolved or suspended in the OF2. The other tasks were an appraisal of the applicability of radioisotope techniques to problems arising from the exposure of components to liquid/gas combinations, and an assessment of the applicability of the techniques to other propellants.

Obrien, J. R.↗
NASA NTRS1973

Regeneratively cooled rocket engine for space storable propellants

Analyses and experimental studies were performed with the OF2 (F2/O2)/B2H6 propellant combination over a range in operating conditions to determine suitability for a space storable pressure fed engine configuration for an extended flight space vehicle configuration. The regenerative cooling mode selected for the thrust chamber was explored in detail with the use of both the fuel and oxidizer as coolants in an advanced milled channel construction thrust chamber design operating at 100 psia chamber pressure and a nominal mixture ratio of 3.0 with a 60:1 area ratio nozzle. Benefits of the simultaneous cooling as related to gaseous injection of both fuel and oxidizer propellants were defined. Heat transfer rates, performance and combustor stability were developed for impinging element triplet injectors in uncooled copper calorimeter hardware with flow, pressure and temperature instrumentation. Evaluation of the capabilities of the B2H6 and OF2 during analytical studies and numerous tests with flow through electrically heated blocks provided design criteria for subsequent regenerative chamber design and fabrication.

Wagner, W. R.↗
NASA NTRS1973

Ultrastructural pathogenesis of lesions produced by exposure to oxygen difluoride with correlative light microscopy

The lungs of rats exposed to OF2 were examined by light and electron microscopy. The exposures were for 30 to 60 minutes to an average of 4.5 ppm OF2, the minimal lethal dose. Animals were sacrificed after 30 (group 1) and 60 minutes (group 2) exposure and 1 (group 3) and 2 (group 4) hours following 60 minutes exposure. Mild gross changes were observed in groups 3 and 4, but no light microscopic lesions were found. Alterations were noted in all four groups using electron microscopy. These were mostly indicative of fluid change and consisted of blebbing of the endothelial and epithelial layers of the alveolocapillary wall and rarification of the cytoplasm of these cells. The lamellar bodies of the Type II cells showed an increasing and consistent loss of matrix structure and density. These fine structural changes increased in quantity and severity as time of exposure or post-exposure period increased. (Modified author abstract)

Harrison, G.↗
NASA NTRS1976

Utilization of oxygen difluoride for syntheses of fluoropolymers

The reaction oxygen difluoride, OF2, with ethylenically unsaturated fluorocarbon compounds is examined. Depending upon the fluorocarbon material and reaction conditions, OF2 can chain extend fluoropolyenes, convert functional perfluorovinyl groups to acyl fluoride and/or epoxide groups, and act as a monomer for an addition type copolymerization with diolefins.

Toy, M. S.↗