Materials Data on Al(SO6)2 by Materials Project

Abstract

Al(SO5)2O2 crystallizes in the orthorhombic Pnma space group. The structure is two-dimensional and consists of four oxygen molecules and two Al(SO5)2 sheets oriented in the (0, 0, 1) direction. In each Al(SO5)2 sheet, Al is bonded to six O atoms to form AlO6 octahedra that share corners with four equivalent SO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.88–1.92 Å. S is bonded to four O atoms to form SO4 tetrahedra that share corners with two equivalent AlO6 octahedra. The corner-sharing octahedra tilt angles range from 42–46°. There are a spread of S–O bond distances ranging from 1.46–1.51 Å. There are five inequivalent O sites. In the first O site, O is bonded in a distorted bent 120 degrees geometry to one Al and one S atom. In the second O site, O is bonded in a single-bond geometry to one S atom. In the third O site, O is bonded in a single-bond geometry to one Al atom. In the fourth O site, O is bonded in a bent 150 degrees geometry to one Al and one S atom. In the fifth O site, O is bonded in a single-bond geometry to one S atom.