Materials Data on H2WO5 by Materials Project
WH2O5 crystallizes in the monoclinic P2_1/c space group. The structure is one-dimensional and consists of two WH2O5 ribbons oriented in the (0, 1, 0) direction. W is bonded to seven O atoms to form a mixture of distorted edge and corner-sharing WO7 pentagonal bipyramids. There are a spread of W–O bond distances ranging from 1.75–2.29 Å. There are two inequivalent H sites. In the first H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. In the second H site, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. There are five inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one W atom. In the second O site, O is bonded in a distorted trigonal non-coplanar geometry to three equivalent W atoms. In the third O site, O is bonded in a water-like geometry to one W and two H atoms. In the fourth O site, O is bonded in a 1-coordinate geometry to one W and one O atom. The O–O bond length is 1.47 Å. In the fifth O site, O is bonded in a 1-coordinate geometry to one W and one O atom.