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DOE OSTI · 1202170

Materials Data on Hf(BH4)4 by Materials Project

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Abstract

Hf(BH4)4 is alpha Po structured and crystallizes in the cubic P-43m space group. The structure is zero-dimensional and consists of one Hf(BH4)4 cluster. Hf4+ is bonded to twelve equivalent H+0.50+ atoms to form HfH12 cuboctahedra that share faces with four equivalent BH4 tetrahedra. All Hf–H bond lengths are 2.13 Å. B3- is bonded to four H+0.50+ atoms to form BH4 tetrahedra that share a faceface with one HfH12 cuboctahedra. There is one shorter (1.19 Å) and three longer (1.25 Å) B–H bond length. There are two inequivalent H+0.50+ sites. In the first H+0.50+ site, H+0.50+ is bonded in a single-bond geometry to one B3- atom. In the second H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Hf4+ and one B3- atom.

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36 MATERIALS SCIENCEB-H-Hfcrystal structureHf(BH4)4

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2020-07-14. Materials Data on Hf(BH4)4 by Materials Project. https://doi.org/10.17188/1202170

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36 MATERIALS SCIENCE↗