Materials Data on Fe4Te3Se by Materials Project
Fe4Te3Se crystallizes in the orthorhombic Pmm2 space group. The structure is two-dimensional and consists of one Fe4Te3Se sheet oriented in the (0, 1, 0) direction. there are three inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded in a 4-coordinate geometry to two equivalent Te2- and two equivalent Se2- atoms. Both Fe–Te bond lengths are 2.59 Å. Both Fe–Se bond lengths are 2.43 Å. In the second Fe2+ site, Fe2+ is bonded in a 4-coordinate geometry to four Te2- atoms. All Fe–Te bond lengths are 2.58 Å. In the third Fe2+ site, Fe2+ is bonded in a 4-coordinate geometry to three Te2- and one Se2- atom. All Fe–Te bond lengths are 2.59 Å. The Fe–Se bond length is 2.41 Å. There are two inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 4-coordinate geometry to four Fe2+ atoms. In the second Te2- site, Te2- is bonded in a 4-coordinate geometry to four Fe2+ atoms. Se2- is bonded in a 4-coordinate geometry to four Fe2+ atoms.