Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Ba”

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 415 records · Page 23

Materials Data on Ba(BO2)2 by Materials Project

BaB2O4 crystallizes in the trigonal R3c space group. The structure is three-dimensional. Ba2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ba–O bond distances ranging from 2.68–3.15 Å. There are two inequivalent B3+ sites. In the first B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.33–1.43 Å. In the second B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.33–1.42 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ba2+ and two equivalent B3+ atoms. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent Ba2+ and one B3+ atom. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ba2+ and two equivalent B3+ atoms. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent Ba2+ and one B3+ atom.

36 MATERIALS SCIENCE↗

Materials Data on Ba(CuS)2 by Materials Project

BaCu2S2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Ba2+ is bonded in a 7-coordinate geometry to seven S2- atoms. There are a spread of Ba–S bond distances ranging from 3.10–3.32 Å. There are two inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded to four S2- atoms to form a mixture of corner and edge-sharing CuS4 tetrahedra. There are a spread of Cu–S bond distances ranging from 2.39–2.47 Å. In the second Cu1+ site, Cu1+ is bonded to four S2- atoms to form a mixture of corner and edge-sharing CuS4 tetrahedra. There are a spread of Cu–S bond distances ranging from 2.35–2.56 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 7-coordinate geometry to three equivalent Ba2+ and four Cu1+ atoms. In the second S2- site, S2- is bonded in a 8-coordinate geometry to four equivalent Ba2+ and four Cu1+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ba(FeS2)2 by Materials Project

BaFe2S4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. Ba2+ is bonded in a 12-coordinate geometry to twelve S2- atoms. There are a spread of Ba–S bond distances ranging from 3.30–3.88 Å. There are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to four S2- atoms to form edge-sharing FeS4 tetrahedra. There are two shorter (2.13 Å) and two longer (2.14 Å) Fe–S bond lengths. In the second Fe3+ site, Fe3+ is bonded to four S2- atoms to form edge-sharing FeS4 tetrahedra. There are one shorter (2.13 Å) and three longer (2.14 Å) Fe–S bond lengths. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded in a 4-coordinate geometry to three equivalent Ba2+ and two Fe3+ atoms. In the second S2- site, S2- is bonded in a 4-coordinate geometry to three equivalent Ba2+ and two Fe3+ atoms. In the third S2- site, S2- is bonded in a 4-coordinate geometry to three equivalent Ba2+ and two Fe3+ atoms. In the fourth S2- site, S2- is bonded in a 4-coordinate geometry to three equivalent Ba2+ and two Fe3+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ba(FeS2)2 by Materials Project

BaFe2S4 crystallizes in the monoclinic C2 space group. The structure is three-dimensional. Ba2+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are four shorter (3.25 Å) and four longer (3.27 Å) Ba–S bond lengths. There are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to four S2- atoms to form edge-sharing FeS4 tetrahedra. There are two shorter (2.14 Å) and two longer (2.15 Å) Fe–S bond lengths. In the second Fe3+ site, Fe3+ is bonded to four S2- atoms to form edge-sharing FeS4 tetrahedra. All Fe–S bond lengths are 2.15 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 4-coordinate geometry to two equivalent Ba2+ and two Fe3+ atoms. In the second S2- site, S2- is bonded in a 4-coordinate geometry to two equivalent Ba2+ and two Fe3+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ba(AsPd)2 by Materials Project

BaPd2As2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ba2+ is bonded in a distorted body-centered cubic geometry to eight equivalent As3- atoms. All Ba–As bond lengths are 3.50 Å. Pd2+ is bonded to four equivalent As3- atoms to form a mixture of edge and corner-sharing PdAs4 tetrahedra. All Pd–As bond lengths are 2.59 Å. As3- is bonded in a 9-coordinate geometry to four equivalent Ba2+, four equivalent Pd2+, and one As3- atom. The As–As bond length is 2.82 Å.

36 MATERIALS SCIENCE↗

Materials Data on Ba(SbPd)2 by Materials Project

BaPd2Sb2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ba2+ is bonded in a distorted body-centered cubic geometry to eight equivalent Sb3- atoms. All Ba–Sb bond lengths are 3.71 Å. Pd2+ is bonded to four equivalent Sb3- atoms to form a mixture of corner and edge-sharing PdSb4 tetrahedra. All Pd–Sb bond lengths are 2.71 Å. Sb3- is bonded in a 9-coordinate geometry to four equivalent Ba2+, four equivalent Pd2+, and one Sb3- atom. The Sb–Sb bond length is 3.06 Å.

36 MATERIALS SCIENCE↗

Materials Data on Ba(CuO)2 by Materials Project

BaCu2O2 crystallizes in the tetragonal I4_1/amd space group. The structure is three-dimensional. Ba2+ is bonded to six equivalent O2- atoms to form a mixture of edge and corner-sharing BaO6 octahedra. The corner-sharing octahedral tilt angles are 5°. There are two shorter (2.66 Å) and four longer (2.90 Å) Ba–O bond lengths. Cu1+ is bonded in a linear geometry to two equivalent O2- atoms. Both Cu–O bond lengths are 1.85 Å. O2- is bonded to three equivalent Ba2+ and two equivalent Cu1+ atoms to form a mixture of distorted edge and corner-sharing OBa3Cu2 trigonal bipyramids.

36 MATERIALS SCIENCE↗

Materials Data on Ba(ZnP)2 by Materials Project

BaZn2P2 is alpha bismuth trifluoride-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ba2+ is bonded in a body-centered cubic geometry to eight equivalent P3- atoms. All Ba–P bond lengths are 3.41 Å. Zn2+ is bonded to four equivalent P3- atoms to form a mixture of corner and edge-sharing ZnP4 tetrahedra. All Zn–P bond lengths are 2.49 Å. P3- is bonded in a 8-coordinate geometry to four equivalent Ba2+ and four equivalent Zn2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ba(ZnAs)2 by Materials Project

BaZn2As2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Ba2+ is bonded in a 7-coordinate geometry to seven As3- atoms. There are a spread of Ba–As bond distances ranging from 3.32–3.63 Å. There are two inequivalent Zn2+ sites. In the first Zn2+ site, Zn2+ is bonded to four As3- atoms to form a mixture of edge and corner-sharing ZnAs4 tetrahedra. There are a spread of Zn–As bond distances ranging from 2.56–2.61 Å. In the second Zn2+ site, Zn2+ is bonded to four As3- atoms to form a mixture of edge and corner-sharing ZnAs4 tetrahedra. There are a spread of Zn–As bond distances ranging from 2.53–2.65 Å. There are two inequivalent As3- sites. In the first As3- site, As3- is bonded in a 7-coordinate geometry to three equivalent Ba2+ and four Zn2+ atoms. In the second As3- site, As3- is bonded in a 4-coordinate geometry to four equivalent Ba2+ and four Zn2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ba(GaSe2)2 by Materials Project

BaGa2Se4 crystallizes in the orthorhombic Cccm space group. The structure is three-dimensional. Ba2+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are four shorter (3.42 Å) and four longer (3.45 Å) Ba–Se bond lengths. Ga3+ is bonded to four Se2- atoms to form edge-sharing GaSe4 tetrahedra. There are a spread of Ga–Se bond distances ranging from 2.44–2.47 Å. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 4-coordinate geometry to two equivalent Ba2+ and two equivalent Ga3+ atoms. In the second Se2- site, Se2- is bonded to two equivalent Ba2+ and two equivalent Ga3+ atoms to form a mixture of distorted edge and corner-sharing SeBa2Ga2 trigonal pyramids.

36 MATERIALS SCIENCE↗

Materials Data on Ba(AsPd)2 by Materials Project

BaPd2As2 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Ba2+ is bonded in a body-centered cubic geometry to eight equivalent As3- atoms. All Ba–As bond lengths are 3.49 Å. Pd2+ is bonded in a distorted rectangular see-saw-like geometry to four equivalent As3- atoms. All Pd–As bond lengths are 2.59 Å. As3- is bonded in a 10-coordinate geometry to four equivalent Ba2+, four equivalent Pd2+, and two equivalent As3- atoms. There are one shorter (2.70 Å) and one longer (3.10 Å) As–As bond lengths.

36 MATERIALS SCIENCE↗

Materials Data on Ba(SbO3)2 by Materials Project

BaSb2O6 is beta Vanadium nitride-derived structured and crystallizes in the trigonal P-31m space group. The structure is three-dimensional. Ba2+ is bonded to six equivalent O2- atoms to form BaO6 octahedra that share corners with twelve equivalent SbO6 octahedra. The corner-sharing octahedral tilt angles are 53°. All Ba–O bond lengths are 2.75 Å. Sb5+ is bonded to six equivalent O2- atoms to form SbO6 octahedra that share corners with six equivalent BaO6 octahedra and edges with three equivalent SbO6 octahedra. The corner-sharing octahedral tilt angles are 53°. All Sb–O bond lengths are 2.03 Å. O2- is bonded in a distorted trigonal planar geometry to one Ba2+ and two equivalent Sb5+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ba(CuAs)2 by Materials Project

BaCu2As2 is alpha bismuth trifluoride-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ba2+ is bonded in a body-centered cubic geometry to eight equivalent As3- atoms. All Ba–As bond lengths are 3.42 Å. Cu2+ is bonded to four equivalent As3- atoms to form a mixture of corner and edge-sharing CuAs4 tetrahedra. All Cu–As bond lengths are 2.49 Å. As3- is bonded in a 8-coordinate geometry to four equivalent Ba2+ and four equivalent Cu2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ba(AuO2)2 by Materials Project

BaAu2O4 crystallizes in the tetragonal I4_1/a space group. The structure is three-dimensional. Ba2+ is bonded in a 8-coordinate geometry to eight equivalent O2- atoms. There are four shorter (2.80 Å) and four longer (2.81 Å) Ba–O bond lengths. Au3+ is bonded in a square co-planar geometry to four equivalent O2- atoms. All Au–O bond lengths are 2.04 Å. O2- is bonded to two equivalent Ba2+ and two equivalent Au3+ atoms to form a mixture of distorted edge and corner-sharing OBa2Au2 tetrahedra.

36 MATERIALS SCIENCE↗

Materials Data on Ba(NiP)2 by Materials Project

BaNi2P2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ba2+ is bonded in a body-centered cubic geometry to eight equivalent P3- atoms. All Ba–P bond lengths are 3.37 Å. Ni2+ is bonded to four equivalent P3- atoms to form a mixture of edge and corner-sharing NiP4 tetrahedra. All Ni–P bond lengths are 2.25 Å. P3- is bonded in a 4-coordinate geometry to four equivalent Ba2+ and four equivalent Ni2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ba(Sb3Ru)4 by Materials Project

BaRu4Sb12 crystallizes in the cubic Im-3 space group. The structure is three-dimensional. Ba2+ is bonded to twelve equivalent Sb1- atoms to form BaSb12 cuboctahedra that share faces with eight equivalent RuSb6 octahedra. All Ba–Sb bond lengths are 3.58 Å. Ru+2.50+ is bonded to six equivalent Sb1- atoms to form RuSb6 octahedra that share corners with six equivalent RuSb6 octahedra and faces with two equivalent BaSb12 cuboctahedra. The corner-sharing octahedral tilt angles are 55°. All Ru–Sb bond lengths are 2.66 Å. Sb1- is bonded in a 2-coordinate geometry to one Ba2+, two equivalent Ru+2.50+, and two equivalent Sb1- atoms. There are one shorter (2.95 Å) and one longer (3.03 Å) Sb–Sb bond lengths.

36 MATERIALS SCIENCE↗

Materials Data on Ba(ZnSb)2 by Materials Project

BaZn2Sb2 crystallizes in the tetragonal I4mm space group. The structure is two-dimensional and consists of two BaZn2Sb2 sheets oriented in the (0, 0, 1) direction. Ba2+ is bonded in a distorted square co-planar geometry to four equivalent Sb3- atoms. All Ba–Sb bond lengths are 3.42 Å. Zn2+ is bonded to four Sb3- atoms to form a mixture of edge and corner-sharing ZnSb4 tetrahedra. There are two shorter (2.71 Å) and two longer (2.98 Å) Zn–Sb bond lengths. There are two inequivalent Sb3- sites. In the first Sb3- site, Sb3- is bonded in a 4-coordinate geometry to four equivalent Zn2+ atoms. In the second Sb3- site, Sb3- is bonded in a 8-coordinate geometry to four equivalent Ba2+ and four equivalent Zn2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ba(Sb3Os)4 by Materials Project

Ba(OsSb3)4 is Upper Bainite-derived structured and crystallizes in the cubic Im-3 space group. The structure is three-dimensional and consists of two barium molecules and one OsSb3 framework. In the OsSb3 framework, Os2- is bonded to six equivalent Sb+0.50+ atoms to form corner-sharing OsSb6 octahedra. The corner-sharing octahedral tilt angles are 55°. All Os–Sb bond lengths are 2.67 Å. Sb+0.50+ is bonded in a bent 120 degrees geometry to two equivalent Os2- atoms.

36 MATERIALS SCIENCE↗