Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “CS”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 685 records · Page 38
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on CsH7O4 by Materials Project

Cs(H2O)2H3O2 crystallizes in the monoclinic P2_1/c space group. The structure is one-dimensional and consists of two Cs(H2O)2 ribbons oriented in the (0, 1, 0) direction and two H3O2 ribbons oriented in the (0, 1, 0) direction. In each Cs(H2O)2 ribbon, Cs1+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of Cs–O bond distances ranging from 3.07–3.21 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 1.00 Å. In the second H1+ site, H1+ is bonded in a distorted single-bond geometry to one O2- atom. The H–O bond length is 1.01 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 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 water-like geometry to two equivalent Cs1+ and two H1+ atoms. In the second O2- site, O2- is bonded in a water-like geometry to one Cs1+ and two H1+ atoms. In each H3O2 ribbon, there are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.03 Å) and one longer (1.58 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.03 Å) and one longer (1.60 Å) H–O bond length. 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. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a water-like geometry to two H1+ atoms. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three H1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs4ZrO4 by Materials Project

Cs4ZrO4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are four inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Cs–O bond distances ranging from 2.95–3.47 Å. In the second Cs1+ site, Cs1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Cs–O bond distances ranging from 3.05–3.28 Å. In the third Cs1+ site, Cs1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Cs–O bond distances ranging from 2.93–3.52 Å. In the fourth Cs1+ site, Cs1+ is bonded to four O2- atoms to form distorted CsO4 tetrahedra that share corners with four equivalent ZrO4 tetrahedra and edges with two equivalent CsO4 tetrahedra. There are a spread of Cs–O bond distances ranging from 2.97–3.09 Å. Zr4+ is bonded to four O2- atoms to form ZrO4 tetrahedra that share corners with four equivalent CsO4 tetrahedra. All Zr–O bond lengths are 2.01 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded to five Cs1+ and one Zr4+ atom to form distorted edge-sharing OCs5Zr octahedra. In the second O2- site, O2- is bonded in a 1-coordinate geometry to five Cs1+ and one Zr4+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to five Cs1+ and one Zr4+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to four Cs1+ and one Zr4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs2CuF6 by Materials Project

Cs2CuF6 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Cs is bonded to twelve F atoms to form CsF12 cuboctahedra that share corners with twelve equivalent CsF12 cuboctahedra, faces with six equivalent CsF12 cuboctahedra, and faces with four equivalent CuF6 octahedra. All Cs–F bond lengths are 3.24 Å. Cu is bonded to six F atoms to form CuF6 octahedra that share faces with eight equivalent CsF12 cuboctahedra. There is four shorter (1.86 Å) and two longer (1.87 Å) Cu–F bond length. There are two inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to four equivalent Cs and one Cu atom. In the second F site, F is bonded in a single-bond geometry to four equivalent Cs and one Cu atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CsNa2Si17 by Materials Project

CsNa2Si17 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Cs is bonded in a 12-coordinate geometry to twenty-eight Si atoms. There are a spread of Cs–Si bond distances ranging from 3.97–4.06 Å. Na is bonded in a 8-coordinate geometry to twenty Si atoms. There are a spread of Na–Si bond distances ranging from 3.21–3.39 Å. There are three inequivalent Si sites. In the first Si site, Si is bonded in a 8-coordinate geometry to one Cs, three equivalent Na, and four Si atoms. There are one shorter (2.37 Å) and three longer (2.38 Å) Si–Si bond lengths. In the second Si site, Si is bonded in a body-centered cubic geometry to four equivalent Na and four equivalent Si atoms. In the third Si site, Si is bonded in a 4-coordinate geometry to two equivalent Cs, two equivalent Na, and four Si atoms. All Si–Si bond lengths are 2.40 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs2ZnO2 by Materials Project

Cs2ZnO2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are four inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Cs–O bond distances ranging from 2.91–3.11 Å. In the second Cs1+ site, Cs1+ is bonded to four O2- atoms to form distorted CsO4 trigonal pyramids that share a cornercorner with one ZnO4 tetrahedra, corners with two equivalent CsO4 trigonal pyramids, and an edgeedge with one ZnO4 tetrahedra. There are a spread of Cs–O bond distances ranging from 2.98–3.16 Å. In the third Cs1+ site, Cs1+ is bonded in a 4-coordinate geometry to six O2- atoms. There are a spread of Cs–O bond distances ranging from 3.07–3.68 Å. In the fourth Cs1+ site, Cs1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Cs–O bond distances ranging from 2.95–3.12 Å. There are two inequivalent Zn2+ sites. In the first Zn2+ site, Zn2+ is bonded in a distorted trigonal planar geometry to three O2- atoms. There are a spread of Zn–O bond distances ranging from 1.87–1.98 Å. In the second Zn2+ site, Zn2+ is bonded to four O2- atoms to form distorted ZnO4 tetrahedra that share a cornercorner with one CsO4 trigonal pyramid, an edgeedge with one ZnO4 tetrahedra, and an edgeedge with one CsO4 trigonal pyramid. There are a spread of Zn–O bond distances ranging from 2.03–2.07 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to five Cs1+ and one Zn2+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to five Cs1+ and two equivalent Zn2+ atoms. In the third O2- site, O2- is bonded in a 2-coordinate geometry to four Cs1+ and two Zn2+ atoms. In the fourth O2- site, O2- is bonded in a 6-coordinate geometry to four Cs1+ and two Zn2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CsDyI3 by Materials Project

CsDyI3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Cs is bonded in a 9-coordinate geometry to nine I atoms. There are a spread of Cs–I bond distances ranging from 3.92–4.42 Å. Dy is bonded to six I atoms to form corner-sharing DyI6 octahedra. The corner-sharing octahedra tilt angles range from 12–18°. All Dy–I bond lengths are 3.06 Å. There are two inequivalent I sites. In the first I site, I is bonded in a 5-coordinate geometry to three equivalent Cs and two equivalent Dy atoms. In the second I site, I is bonded to three equivalent Cs and two equivalent Dy atoms to form a mixture of distorted edge and corner-sharing ICs3Dy2 square pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CsHg(NO2)3 by Materials Project

Cs(NO2)3Hg crystallizes in the cubic Pm-3 space group. The structure is three-dimensional and consists of one mercury molecule and one Cs(NO2)3 framework. In the Cs(NO2)3 framework, Cs1+ is bonded to twelve equivalent O2- atoms to form edge-sharing CsO12 cuboctahedra. All Cs–O bond lengths are 3.59 Å. N3+ is bonded in a linear geometry to two equivalent O2- atoms. Both N–O bond lengths are 1.24 Å. O2- is bonded in a single-bond geometry to two equivalent Cs1+ and one N3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs6K3GaSb4 by Materials Project

Cs6K3GaSb4 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Cs1+ is bonded in a 3-coordinate geometry to four equivalent Cs1+, one K1+, and five Sb3- atoms. There are two shorter (4.15 Å) and two longer (4.17 Å) Cs–Cs bond lengths. The Cs–K bond length is 3.84 Å. There are a spread of Cs–Sb bond distances ranging from 4.08–4.27 Å. K1+ is bonded in a 4-coordinate geometry to two equivalent Cs1+ and four Sb3- atoms. There are two shorter (3.64 Å) and two longer (3.72 Å) K–Sb bond lengths. Ga3+ is bonded in a trigonal planar geometry to three equivalent Sb3- atoms. All Ga–Sb bond lengths are 2.69 Å. There are two inequivalent Sb3- sites. In the first Sb3- site, Sb3- is bonded in a 1-coordinate geometry to eight equivalent Cs1+, two equivalent K1+, and one Ga3+ atom. In the second Sb3- site, Sb3- is bonded to six equivalent Cs1+ and six equivalent K1+ atoms to form face-sharing SbCs6K6 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs4PbO4 by Materials Project

Cs4PbO4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are four inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Cs–O bond distances ranging from 2.99–3.49 Å. In the second Cs1+ site, Cs1+ is bonded to four O2- atoms to form distorted CsO4 trigonal pyramids that share corners with four equivalent PbO4 tetrahedra and an edgeedge with one CsO4 trigonal pyramid. There are a spread of Cs–O bond distances ranging from 2.88–2.99 Å. In the third Cs1+ site, Cs1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Cs–O bond distances ranging from 3.09–3.23 Å. In the fourth Cs1+ site, Cs1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Cs–O bond distances ranging from 2.86–3.63 Å. Pb4+ is bonded to four O2- atoms to form PbO4 tetrahedra that share corners with four equivalent CsO4 trigonal pyramids. There are three shorter (2.12 Å) and one longer (2.13 Å) Pb–O bond lengths. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 5-coordinate geometry to four Cs1+ and one Pb4+ atom. In the second O2- site, O2- is bonded in a 6-coordinate geometry to five Cs1+ and one Pb4+ atom. In the third O2- site, O2- is bonded in a 6-coordinate geometry to five Cs1+ and one Pb4+ atom. In the fourth O2- site, O2- is bonded to five Cs1+ and one Pb4+ atom to form a mixture of distorted edge and corner-sharing OCs5Pb octahedra. The corner-sharing octahedra tilt angles range from 43–46°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs3As by Materials Project

Cs3As crystallizes in the hexagonal P6_3cm space group. The structure is three-dimensional. there are four inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a distorted bent 120 degrees geometry to two equivalent As3- atoms. There are one shorter (3.83 Å) and one longer (3.85 Å) Cs–As bond lengths. In the second Cs1+ site, Cs1+ is bonded in a distorted trigonal planar geometry to three equivalent As3- atoms. There are one shorter (3.83 Å) and two longer (3.94 Å) Cs–As bond lengths. In the third Cs1+ site, Cs1+ is bonded in a distorted trigonal non-coplanar geometry to three equivalent As3- atoms. All Cs–As bond lengths are 3.72 Å. In the fourth Cs1+ site, Cs1+ is bonded in a trigonal planar geometry to three equivalent As3- atoms. All Cs–As bond lengths are 3.75 Å. As3- is bonded in a 8-coordinate geometry to eight Cs1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs4Sb2O5 by Materials Project

Cs4Sb2O5 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are four inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a square co-planar geometry to four O2- atoms. There are two shorter (2.93 Å) and two longer (3.00 Å) Cs–O bond lengths. In the second Cs1+ site, Cs1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Cs–O bond distances ranging from 3.17–3.55 Å. In the third Cs1+ site, Cs1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Cs–O bond distances ranging from 3.07–3.50 Å. In the fourth Cs1+ site, Cs1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Cs–O bond distances ranging from 3.21–3.33 Å. There are two inequivalent Sb3+ sites. In the first Sb3+ site, Sb3+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is two shorter (1.94 Å) and one longer (2.03 Å) Sb–O bond length. In the second Sb3+ site, Sb3+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There is two shorter (1.94 Å) and one longer (2.04 Å) Sb–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 6-coordinate geometry to five Cs1+ and one Sb3+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to five Cs1+ and one Sb3+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to three Cs1+ and two Sb3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CsK(ClO4)2 by Materials Project

CsK(O4Cl)2 crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Cs is bonded in a 12-coordinate geometry to fourteen O atoms. There are twelve shorter (3.42 Å) and two longer (3.71 Å) Cs–O bond lengths. K is bonded in a 6-coordinate geometry to six equivalent O atoms. All K–O bond lengths are 2.84 Å. There are two inequivalent O sites. In the first O site, O is bonded in a 1-coordinate geometry to two equivalent Cs, one K, and one Cl atom. The O–Cl bond length is 1.47 Å. In the second O site, O is bonded in a single-bond geometry to one Cs and one Cl atom. The O–Cl bond length is 1.46 Å. Cl is bonded in a tetrahedral geometry to four O atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs2Bi4O7 by Materials Project

Cs2Bi4O7 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are four inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Cs–O bond distances ranging from 2.94–3.59 Å. In the second Cs1+ site, Cs1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Cs–O bond distances ranging from 2.95–3.67 Å. In the third Cs1+ site, Cs1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Cs–O bond distances ranging from 2.95–3.65 Å. In the fourth Cs1+ site, Cs1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Cs–O bond distances ranging from 2.95–3.60 Å. There are eight inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.12–3.00 Å. In the second Bi3+ site, Bi3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.13–2.95 Å. In the third Bi3+ site, Bi3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.13–2.93 Å. In the fourth Bi3+ site, Bi3+ is bonded in a distorted square pyramidal geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.13–2.76 Å. In the fifth Bi3+ site, Bi3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.13–3.05 Å. In the sixth Bi3+ site, Bi3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.12–2.97 Å. In the seventh Bi3+ site, Bi3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.13–2.89 Å. In the eighth Bi3+ site, Bi3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Bi–O bond distances ranging from 2.13–2.99 Å. There are fifteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Cs1+ and two equivalent Bi3+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two Cs1+ and three Bi3+ atoms. In the third O2- site, O2- is bonded in a 5-coordinate geometry to two Cs1+ and three Bi3+ atoms. In the fourth O2- site, O2- is bonded in a 5-coordinate geometry to one Cs1+ and four Bi3+ atoms. In the fifth O2- site, O2- is bonded in a 5-coordinate geometry to one Cs1+ and four Bi3+ atoms. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to three Cs1+ and two Bi3+ atoms. In the seventh O2- site, O2- is bonded in a 5-coordinate geometry to three Cs1+ and two Bi3+ atoms. In the eighth O2- site, O2- is bonded in a 5-coordinate geometry to one Cs1+ and four Bi3+ atoms. In the ninth O2- site, O2- is bonded in a 2-coordinate geometry to three Cs1+ and two Bi3+ atoms. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to four Cs1+ and two equivalent Bi3+ atoms. In the eleventh O2- site, O2- is bonded in a 5-coordinate geometry to one Cs1+ and four Bi3+ atoms. In the twelfth O2- site, O2- is bonded in a 5-coordinate geometry to two Cs1+ and three Bi3+ atoms. In the thirteenth O2- site, O2- is bonded in a 5-coordinate geometry to three Cs1+ and two Bi3+ atoms. In the fourteenth O2- site, O2- is bonded in a 5-coordinate geometry to three Cs1+ and two Bi3+ atoms. In the fifteenth O2- site, O2- is bonded in a 5-coordinate geometry to two Cs1+ and three Bi3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs3ZnI4NO3 by Materials Project

Cs3ZnNO3I4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 9-coordinate geometry to three O2- and six I1- atoms. There are a spread of Cs–O bond distances ranging from 3.22–3.41 Å. There are a spread of Cs–I bond distances ranging from 4.08–4.26 Å. In the second Cs1+ site, Cs1+ is bonded in a 1-coordinate geometry to three O2- and six I1- atoms. There are one shorter (3.11 Å) and two longer (3.27 Å) Cs–O bond lengths. There are a spread of Cs–I bond distances ranging from 3.93–4.11 Å. Zn2+ is bonded in a tetrahedral geometry to four I1- atoms. There are three shorter (2.64 Å) and one longer (2.66 Å) Zn–I bond lengths. N5+ is bonded in a trigonal planar geometry to three O2- atoms. All N–O bond lengths are 1.27 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three Cs1+ and one N5+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to three Cs1+ and one N5+ atom. There are three inequivalent I1- sites. In the first I1- site, I1- is bonded in a distorted single-bond geometry to four Cs1+ and one Zn2+ atom. In the second I1- site, I1- is bonded in a distorted single-bond geometry to five Cs1+ and one Zn2+ atom. In the third I1- site, I1- is bonded in a distorted single-bond geometry to five Cs1+ and one Zn2+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CsSi2HO5 by Materials Project

CsSi2HO5 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 2-coordinate geometry to two equivalent H1+ and nine O2- atoms. Both Cs–H bond lengths are 3.23 Å. There are a spread of Cs–O bond distances ranging from 3.11–3.51 Å. In the second Cs1+ site, Cs1+ is bonded in a 2-coordinate geometry to two equivalent H1+ and nine O2- atoms. Both Cs–H bond lengths are 3.22 Å. There are a spread of Cs–O bond distances ranging from 3.11–3.48 Å. There are two inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form corner-sharing SiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.61–1.65 Å. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form corner-sharing SiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.60–1.65 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a linear geometry to two equivalent Cs1+ and two equivalent O2- atoms. Both H–O bond lengths are 1.21 Å. In the second H1+ site, H1+ is bonded in a linear geometry to two equivalent Cs1+ and two equivalent O2- atoms. Both H–O bond lengths are 1.21 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to three equivalent Cs1+, one Si4+, and one H1+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Cs1+ and two Si4+ atoms. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to one Cs1+ and two equivalent Si4+ atoms. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to one Cs1+ and two equivalent Si4+ atoms. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Cs1+ and two Si4+ atoms. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to three equivalent Cs1+, one Si4+, and one H1+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs2TeOF4 by Materials Project

Cs2TeOF4 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 9-coordinate geometry to one O2- and eight equivalent F1- atoms. The Cs–O bond length is 3.10 Å. There are four shorter (2.97 Å) and four longer (3.54 Å) Cs–F bond lengths. In the second Cs1+ site, Cs1+ is bonded in a 12-coordinate geometry to four equivalent O2- and eight equivalent F1- atoms. There are two shorter (3.43 Å) and two longer (3.67 Å) Cs–O bond lengths. There are four shorter (3.27 Å) and four longer (3.36 Å) Cs–F bond lengths. Te4+ is bonded in a square pyramidal geometry to one O2- and four equivalent F1- atoms. The Te–O bond length is 1.82 Å. All Te–F bond lengths are 2.11 Å. O2- is bonded in a distorted single-bond geometry to five Cs1+ and one Te4+ atom. F1- is bonded in a 1-coordinate geometry to four Cs1+ and one Te4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs2PbO2 by Materials Project

Cs2PbO2 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are four inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a distorted T-shaped geometry to three O2- atoms. There are a spread of Cs–O bond distances ranging from 2.93–3.04 Å. In the second Cs1+ site, Cs1+ is bonded in a distorted see-saw-like geometry to four O2- atoms. There are a spread of Cs–O bond distances ranging from 3.00–3.32 Å. In the third Cs1+ site, Cs1+ is bonded to five O2- atoms to form distorted edge-sharing CsO5 square pyramids. There are a spread of Cs–O bond distances ranging from 3.02–3.22 Å. In the fourth Cs1+ site, Cs1+ is bonded to five O2- atoms to form distorted edge-sharing CsO5 trigonal bipyramids. There are a spread of Cs–O bond distances ranging from 2.96–3.30 Å. There are two inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There are a spread of Pb–O bond distances ranging from 2.15–2.31 Å. In the second Pb2+ site, Pb2+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of Pb–O bond distances ranging from 2.16–2.29 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded to four Cs1+ and two equivalent Pb2+ atoms to form distorted OCs4Pb2 octahedra that share corners with three equivalent OCs3Pb2 trigonal bipyramids and edges with eight OCs4Pb2 octahedra. In the second O2- site, O2- is bonded to five Cs1+ and one Pb2+ atom to form distorted OCs5Pb octahedra that share corners with three equivalent OCs5Pb octahedra, edges with four OCs4Pb2 octahedra, and edges with three equivalent OCs3Pb2 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 16–20°. In the third O2- site, O2- is bonded to five Cs1+ and one Pb2+ atom to form distorted OCs5Pb octahedra that share corners with three equivalent OCs5Pb octahedra, a cornercorner with one OCs3Pb2 trigonal bipyramid, edges with seven OCs4Pb2 octahedra, and an edgeedge with one OCs3Pb2 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 16–20°. In the fourth O2- site, O2- is bonded to three Cs1+ and two equivalent Pb2+ atoms to form distorted OCs3Pb2 trigonal bipyramids that share corners with four OCs4Pb2 octahedra, edges with four OCs5Pb octahedra, and an edgeedge with one OCs3Pb2 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 30–79°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs2Si2O5 by Materials Project

Cs2Si2O5 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are four inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Cs–O bond distances ranging from 3.05–3.51 Å. In the second Cs1+ site, Cs1+ is bonded in a 2-coordinate geometry to eight O2- atoms. There are a spread of Cs–O bond distances ranging from 2.99–3.54 Å. In the third Cs1+ site, Cs1+ is bonded in a 4-coordinate geometry to eight O2- atoms. There are a spread of Cs–O bond distances ranging from 2.99–3.56 Å. In the fourth Cs1+ site, Cs1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Cs–O bond distances ranging from 3.04–3.56 Å. There are four inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form corner-sharing SiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.59–1.67 Å. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form corner-sharing SiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.59–1.67 Å. In the third Si4+ site, Si4+ is bonded to four O2- atoms to form corner-sharing SiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.59–1.67 Å. In the fourth Si4+ site, Si4+ is bonded to four O2- atoms to form corner-sharing SiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.59–1.67 Å. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to four Cs1+ and one Si4+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to two Cs1+ and two Si4+ atoms. In the third O2- site, O2- is bonded in a distorted single-bond geometry to four Cs1+ and one Si4+ atom. In the fourth O2- site, O2- is bonded in a linear geometry to three Cs1+ and two Si4+ atoms. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Cs1+ and two Si4+ atoms. In the sixth O2- site, O2- is bonded in a linear geometry to three Cs1+ and two Si4+ atoms. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to four Cs1+ and one Si4+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Cs1+ and two Si4+ atoms. In the ninth O2- site, O2- is bonded in a bent 150 degrees geometry to two Cs1+ and two Si4+ atoms. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to four Cs1+ and one Si4+ atom.

36 MATERIALS SCIENCE↗