Materials Data on Re3(SeBr)7 by Materials Project

Abstract

Re3(SeBr)7 crystallizes in the trigonal P31c space group. The structure is zero-dimensional and consists of four Re3(SeBr)7 clusters. Re7+ is bonded to five Se2- and two Br1- atoms to form distorted face-sharing ReSe5Br2 pentagonal bipyramids. There are a spread of Re–Se bond distances ranging from 2.49–2.61 Å. Both Re–Br bond lengths are 2.60 Å. There are three inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 6-coordinate geometry to three equivalent Re7+ atoms. In the second Se2- site, Se2- is bonded in a 3-coordinate geometry to two equivalent Re7+ and one Br1- atom. The Se–Br bond length is 2.91 Å. In the third Se2- site, Se2- is bonded in a 12-coordinate geometry to two equivalent Re7+ atoms. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a single-bond geometry to one Re7+ atom. In the second Br1- site, Br1- is bonded in a single-bond geometry to one Re7+ atom. In the third Br1- site, Br1- is bonded in a 12-coordinate geometry to three equivalent Se2- atoms.