Materials Data on AlAsO4 by Materials Project
AlAsO4 is quartz (alpha)-derived structured and crystallizes in the trigonal P3_121 space group. The structure is three-dimensional. Al3+ is bonded to four O2- atoms to form AlO4 tetrahedra that share corners with four equivalent AsO4 tetrahedra. There is two shorter (1.76 Å) and two longer (1.77 Å) Al–O bond length. As5+ is bonded to four O2- atoms to form AsO4 tetrahedra that share corners with four equivalent AlO4 tetrahedra. There is two shorter (1.70 Å) and two longer (1.71 Å) As–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Al3+ and one As5+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Al3+ and one As5+ atom.