Materials Data on Na2AlAgCl6 by Materials Project

Abstract

Na2AgAlCl6 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Na1+ is bonded to twelve equivalent Cl1- atoms to form NaCl12 cuboctahedra that share corners with twelve equivalent NaCl12 cuboctahedra, faces with six equivalent NaCl12 cuboctahedra, faces with four equivalent AgCl6 octahedra, and faces with four equivalent AlCl6 octahedra. All Na–Cl bond lengths are 3.56 Å. Ag1+ is bonded to six equivalent Cl1- atoms to form AgCl6 octahedra that share corners with six equivalent AlCl6 octahedra and faces with eight equivalent NaCl12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Ag–Cl bond lengths are 2.69 Å. Al3+ is bonded to six equivalent Cl1- atoms to form AlCl6 octahedra that share corners with six equivalent AgCl6 octahedra and faces with eight equivalent NaCl12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Al–Cl bond lengths are 2.34 Å. Cl1- is bonded in a distorted linear geometry to four equivalent Na1+, one Ag1+, and one Al3+ atom.