Materials Data on AgW3Br7 by Materials Project
W3AgBr7 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent W2+ sites. In the first W2+ site, W2+ is bonded to five Br1- atoms to form edge-sharing WBr5 square pyramids. There are four shorter (2.65 Å) and one longer (2.66 Å) W–Br bond lengths. In the second W2+ site, W2+ is bonded to five Br1- atoms to form edge-sharing WBr5 square pyramids. There are three shorter (2.65 Å) and two longer (2.66 Å) W–Br bond lengths. In the third W2+ site, W2+ is bonded to five Br1- atoms to form edge-sharing WBr5 square pyramids. There are three shorter (2.65 Å) and two longer (2.66 Å) W–Br bond lengths. Ag1+ is bonded in a distorted trigonal planar geometry to four Br1- atoms. There are a spread of Ag–Br bond distances ranging from 2.63–3.62 Å. There are seven inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 6-coordinate geometry to three W2+ atoms. In the second Br1- site, Br1- is bonded in a 8-coordinate geometry to three W2+ atoms. In the third Br1- site, Br1- is bonded in a bent 120 degrees geometry to one W2+ and one Ag1+ atom. In the fourth Br1- site, Br1- is bonded in a bent 120 degrees geometry to one W2+ and one Ag1+ atom. In the fifth Br1- site, Br1- is bonded in a water-like geometry to one W2+ and one Ag1+ atom. In the sixth Br1- site, Br1- is bonded in a 8-coordinate geometry to three W2+ atoms. In the seventh Br1- site, Br1- is bonded in a distorted rectangular see-saw-like geometry to three W2+ and one Ag1+ atom.