Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “La(Ni2B)6”

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.

2 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on La(Ni2B)6 by Materials Project

La(Ni2B)6 crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. La3+ is bonded in a distorted hexagonal planar geometry to six B3- atoms. There are a spread of La–B bond distances ranging from 3.08–3.30 Å. There are seven inequivalent Ni+1.25+ sites. In the first Ni+1.25+ site, Ni+1.25+ is bonded in a distorted T-shaped geometry to three B3- atoms. There are a spread of Ni–B bond distances ranging from 2.02–2.10 Å. In the second Ni+1.25+ site, Ni+1.25+ is bonded to four B3- atoms to form a mixture of distorted corner and edge-sharing NiB4 tetrahedra. There are a spread of Ni–B bond distances ranging from 2.02–2.12 Å. In the third Ni+1.25+ site, Ni+1.25+ is bonded to four B3- atoms to form a mixture of distorted corner and edge-sharing NiB4 tetrahedra. There are a spread of Ni–B bond distances ranging from 2.03–2.13 Å. In the fourth Ni+1.25+ site, Ni+1.25+ is bonded in a distorted T-shaped geometry to three B3- atoms. There are a spread of Ni–B bond distances ranging from 2.05–2.15 Å. In the fifth Ni+1.25+ site, Ni+1.25+ is bonded to four B3- atoms to form a mixture of corner and edge-sharing NiB4 tetrahedra. There are a spread of Ni–B bond distances ranging from 2.00–2.10 Å. In the sixth Ni+1.25+ site, Ni+1.25+ is bonded in a T-shaped geometry to three B3- atoms. There are two shorter (2.00 Å) and one longer (2.06 Å) Ni–B bond lengths. In the seventh Ni+1.25+ site, Ni+1.25+ is bonded in a T-shaped geometry to three B3- atoms. There are two shorter (2.09 Å) and one longer (2.17 Å) Ni–B bond lengths. There are four inequivalent B3- sites. In the first B3- site, B3- is bonded in a 7-coordinate geometry to one La3+ and seven Ni+1.25+ atoms. In the second B3- site, B3- is bonded in a 7-coordinate geometry to one La3+ and seven Ni+1.25+ atoms. In the third B3- site, B3- is bonded in a 7-coordinate geometry to one La3+ and seven Ni+1.25+ atoms. In the fourth B3- site, B3- is bonded in a 7-coordinate geometry to one La3+ and seven Ni+1.25+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on La2(Ni2B)3 by Materials Project

La2(Ni2B)3 crystallizes in the orthorhombic Imm2 space group. The structure is three-dimensional. there are two inequivalent La sites. In the first La site, La is bonded in a 1-coordinate geometry to twelve Ni and three B atoms. There are four shorter (2.97 Å) and eight longer (3.11 Å) La–Ni bond lengths. There are one shorter (2.79 Å) and two longer (3.07 Å) La–B bond lengths. In the second La site, La is bonded in a 2-coordinate geometry to four equivalent Ni and two equivalent B atoms. All La–Ni bond lengths are 2.95 Å. Both La–B bond lengths are 2.65 Å. There are two inequivalent Ni sites. In the first Ni site, Ni is bonded in a 2-coordinate geometry to three La and two B atoms. There are one shorter (2.03 Å) and one longer (2.08 Å) Ni–B bond lengths. In the second Ni site, Ni is bonded in a 3-coordinate geometry to two equivalent La and three B atoms. There are a spread of Ni–B bond distances ranging from 1.99–2.06 Å. There are three inequivalent B sites. In the first B site, B is bonded in a 7-coordinate geometry to six Ni and one B atom. The B–B bond length is 1.97 Å. In the second B site, B is bonded in a 6-coordinate geometry to two equivalent La and six Ni atoms. In the third B site, B is bonded in a 6-coordinate geometry to three La, two equivalent Ni, and one B atom.

36 MATERIALS SCIENCE↗