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Results for “B-La-Rh”

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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on La2B4Rh5 by Materials Project

La2Rh5B4 crystallizes in the orthorhombic Fmmm space group. The structure is three-dimensional. La is bonded in a 8-coordinate geometry to ten Rh and six equivalent B atoms. There are a spread of La–Rh bond distances ranging from 3.13–3.31 Å. There are two shorter (3.05 Å) and four longer (3.22 Å) La–B bond lengths. There are three inequivalent Rh sites. In the first Rh site, Rh is bonded in a 4-coordinate geometry to four equivalent La and four equivalent B atoms. All Rh–B bond lengths are 2.14 Å. In the second Rh site, Rh is bonded in a distorted square co-planar geometry to four equivalent La and four equivalent B atoms. All Rh–B bond lengths are 2.21 Å. In the third Rh site, Rh is bonded in a distorted square co-planar geometry to four equivalent La and four equivalent B atoms. All Rh–B bond lengths are 2.20 Å. B is bonded in a 5-coordinate geometry to three equivalent La and five Rh atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LaBRh3 by Materials Project

LaRh3B is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. La is bonded to twelve equivalent Rh atoms to form LaRh12 cuboctahedra that share corners with twelve equivalent LaRh12 cuboctahedra, faces with six equivalent LaRh12 cuboctahedra, and faces with eight equivalent BRh6 octahedra. All La–Rh bond lengths are 3.03 Å. Rh is bonded to four equivalent La and two equivalent B atoms to form a mixture of distorted face, edge, and corner-sharing RhLa4B2 octahedra. The corner-sharing octahedra tilt angles range from 0–60°. Both Rh–B bond lengths are 2.15 Å. B is bonded to six equivalent Rh atoms to form BRh6 octahedra that share corners with six equivalent BRh6 octahedra and faces with eight equivalent LaRh12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LaB2Rh3 by Materials Project

LaRh3B2 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. La is bonded in a 12-coordinate geometry to two equivalent La, twelve equivalent Rh, and six equivalent B atoms. Both La–La bond lengths are 3.14 Å. All La–Rh bond lengths are 3.18 Å. All La–B bond lengths are 3.20 Å. Rh is bonded in a distorted square co-planar geometry to four equivalent La and four equivalent B atoms. All Rh–B bond lengths are 2.24 Å. B is bonded in a 6-coordinate geometry to three equivalent La and six equivalent Rh atoms.

36 MATERIALS SCIENCE↗