Materials Data on Mg(BH4)2 by Materials Project

Dataset · Sat May 02 04:00:00 EDT 2020

DOI:https://doi.org/10.17188/1694786· OSTI ID:1694786

Mg(BH4)2 crystallizes in the orthorhombic Fddd space group. The structure is three-dimensional and consists of two Mg(BH4)2 frameworks. there are two inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to eight H+0.50+ atoms to form MgH8 hexagonal bipyramids that share edges with four equivalent BH4 tetrahedra. There are four shorter (2.08 Å) and four longer (2.12 Å) Mg–H bond lengths. In the second Mg2+ site, Mg2+ is bonded to eight H+0.50+ atoms to form distorted MgH8 hexagonal bipyramids that share edges with four equivalent BH4 tetrahedra. There are four shorter (2.09 Å) and four longer (2.12 Å) Mg–H bond lengths. B3- is bonded to four H+0.50+ atoms to form BH4 tetrahedra that share edges with two MgH8 hexagonal bipyramids. There is two shorter (1.22 Å) and two longer (1.23 Å) B–H bond length. There are four inequivalent H+0.50+ sites. In the first H+0.50+ site, H+0.50+ is bonded in a distorted L-shaped geometry to one Mg2+ and one B3- atom. In the second H+0.50+ site, H+0.50+ is bonded in an L-shaped geometry to one Mg2+ and one B3- atom. In the third H+0.50+ site, H+0.50+ is bonded in a distorted L-shaped geometry to one Mg2+ and one B3- atom. In the fourth H+0.50+ site, H+0.50+ is bonded in an L-shaped geometry to one Mg2+ and one B3- atom.

• Research Organization: LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Contributing Organization: The Materials Project; MIT; UC Berkeley; Duke; U Louvain
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1694786
• Report Number(s): mp-1202941
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
B-H-Mg
Mg(BH4)2
crystal structure