Materials Data on Na3W2(ClO)4 by Materials Project

Abstract

Na3W2(OCl)4 crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are three inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a 9-coordinate geometry to four equivalent O2- and five Cl1- atoms. All Na–O bond lengths are 2.84 Å. There are a spread of Na–Cl bond distances ranging from 2.85–3.04 Å. In the second Na1+ site, Na1+ is bonded in a 9-coordinate geometry to four equivalent O2- and five Cl1- atoms. All Na–O bond lengths are 2.76 Å. There are a spread of Na–Cl bond distances ranging from 2.85–3.05 Å. In the third Na1+ site, Na1+ is bonded in a 9-coordinate geometry to four equivalent O2- and five Cl1- atoms. All Na–O bond lengths are 2.75 Å. There are a spread of Na–Cl bond distances ranging from 2.87–3.12 Å. There are two inequivalent W+4.50+ sites. In the first W+4.50+ site, W+4.50+ is bonded to four equivalent O2- and two Cl1- atoms to form distorted corner-sharing WCl2O4 octahedra. The corner-sharing octahedral tilt angles are 5°. All W–O bond lengths are 2.04 Å. There are one shorter (2.45 Å) and one longer (2.56 Å) W–Cl bond lengths. In the second W+4.50+ site, W+4.50+ is bonded to four equivalent O2- and two Cl1- atoms to form distorted corner-sharing WCl2O4 octahedra. The corner-sharing octahedral tilt angles are 5°. All W–O bond lengths are 1.97 Å. There are one shorter (2.43 Å) and one longer (2.51 Å) W–Cl bond lengths. O2- is bonded to three Na1+ and two W+4.50+ atoms to form distorted ONa3W2 square pyramids that share corners with three equivalent ClNa5W octahedra, corners with two equivalent ClNa4W square pyramids, corners with three equivalent ONa3W2 square pyramids, edges with three equivalent ONa3W2 square pyramids, a faceface with one ClNa5W octahedra, a faceface with one ClNa4W square pyramid, and faces with two equivalent ONa3W2 square pyramids. The corner-sharing octahedra tilt angles range from 45–51°. There are four inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded to five Na1+ and one W+4.50+ atom to form distorted ClNa5W octahedra that share corners with four equivalent ClNa5W octahedra, corners with twelve equivalent ONa3W2 square pyramids, edges with four equivalent ClNa4W square pyramids, and faces with four equivalent ONa3W2 square pyramids. The corner-sharing octahedra tilt angles range from 22–23°. In the second Cl1- site, Cl1- is bonded to four Na1+ and one W+4.50+ atom to form distorted ClNa4W square pyramids that share corners with four equivalent ClNa4W square pyramids, corners with eight equivalent ONa3W2 square pyramids, edges with four equivalent ClNa5W octahedra, and faces with four equivalent ONa3W2 square pyramids. In the third Cl1- site, Cl1- is bonded in a distorted square co-planar geometry to three Na1+ and one W+4.50+ atom. In the fourth Cl1- site, Cl1- is bonded in a distorted square co-planar geometry to three Na1+ and one W+4.50+ atom.