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DOE OSTI · 1280360

Materials Data on Rb2MgH4 by Materials Project

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Abstract

Rb2MgH4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a distorted single-bond geometry to one H1- atom. The Rb–H bond length is 2.83 Å. In the second Rb1+ site, Rb1+ is bonded in a 7-coordinate geometry to seven H1- atoms. There are a spread of Rb–H bond distances ranging from 2.87–3.14 Å. Mg2+ is bonded in a tetrahedral geometry to four H1- atoms. There are a spread of Mg–H bond distances ranging from 1.84–1.86 Å. There are three inequivalent H1- sites. In the first H1- site, H1- is bonded in a distorted single-bond geometry to two equivalent Rb1+ and one Mg2+ atom. In the second H1- site, H1- is bonded in a 3-coordinate geometry to two Rb1+ and one Mg2+ atom. In the third H1- site, H1- is bonded in a distorted single-bond geometry to two equivalent Rb1+ and one Mg2+ atom.

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36 MATERIALS SCIENCEcrystal structureH-Mg-RbRb2MgH4

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2020-05-02. Materials Data on Rb2MgH4 by Materials Project. https://doi.org/10.17188/1280360

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