Materials Data on TaP2Se2Cl5 by Materials Project

Abstract

TaCl5(PSe)2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of eight tantalum chloride (tacl5) molecules and four PSe clusters. In each PSe cluster, there are four inequivalent P2+ sites. In the first P2+ site, P2+ is bonded in a water-like geometry to two Se2- atoms. There are one shorter (2.27 Å) and one longer (2.29 Å) P–Se bond lengths. In the second P2+ site, P2+ is bonded in a trigonal non-coplanar geometry to three Se2- atoms. There are two shorter (2.29 Å) and one longer (2.31 Å) P–Se bond lengths. In the third P2+ site, P2+ is bonded in a water-like geometry to two Se2- atoms. There are one shorter (2.27 Å) and one longer (2.29 Å) P–Se bond lengths. In the fourth P2+ site, P2+ is bonded in a single-bond geometry to one Se2- atom. The P–Se bond length is 2.22 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a distorted water-like geometry to two P2+ atoms. In the second Se2- site, Se2- is bonded in a water-like geometry to two P2+ atoms. In the third Se2- site, Se2- is bonded in a distorted L-shaped geometry to two P2+ atoms. In the fourth Se2- site, Se2- is bonded in a distorted water-like geometry to two P2+ atoms.