Materials Data on Li2V2S5 by Materials Project
Li2V2S5 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Li1+ is bonded in a 5-coordinate geometry to five S2- atoms. There are a spread of Li–S bond distances ranging from 2.50–2.83 Å. V4+ is bonded to five S2- atoms to form a mixture of distorted edge and corner-sharing VS5 trigonal bipyramids. There are a spread of V–S bond distances ranging from 2.18–2.46 Å. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li1+ and two equivalent V4+ atoms. In the second S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li1+ and two equivalent V4+ atoms. In the third S2- site, S2- is bonded in a distorted trigonal pyramidal geometry to two equivalent Li1+ and two equivalent V4+ atoms.