Materials Data on H4W by Materials Project
WH4 crystallizes in the tetragonal P4/nmm space group. The structure is two-dimensional and consists of one WH4 sheet oriented in the (0, 0, 1) direction. W2+ is bonded in a 10-coordinate geometry to ten H+0.50- atoms. There are a spread of W–H bond distances ranging from 1.73–2.18 Å. There are three inequivalent H+0.50- sites. In the first H+0.50- site, H+0.50- is bonded to five equivalent W2+ atoms to form a mixture of distorted corner and edge-sharing HW5 square pyramids. In the second H+0.50- site, H+0.50- is bonded in a single-bond geometry to one W2+ atom. In the third H+0.50- site, H+0.50- is bonded in a water-like geometry to two equivalent W2+ atoms.
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