AlPO4 is quartz (alpha)-derived structured and crystallizes in the trigonal P3_221 space group. Al(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form AlO4 tetrahedra that share corners with four equivalent P(1)O4 tetrahedra. P(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form PO4 tetrahedra that share corners with four equivalent Al(1)O4 tetrahedra. There are two inequivalent O sites. In the first O site, O(2) is bonded in a bent 150 degrees geometry to one Al(1) and one P(1) atom. In the second O site, O(1) is bonded in a bent 150 degrees geometry to one Al(1) and one P(1) atom.
AlPO4 is quartz (alpha)-derived structured and crystallizes in the trigonal P3_221 space group. Al(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form AlO4 tetrahedra that share corners with four equivalent P(1)O4 tetrahedra. Both Al(1)-O(1) bond lengths are 1.74 Å. Both Al(1)-O(2) bond lengths are 1.73 Å. P(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form PO4 tetrahedra that share corners with four equivalent Al(1)O4 tetrahedra. Both P(1)-O(1) bond lengths are 1.52 Å. Both P(1)-O(2) bond lengths are 1.53 Å. There are two inequivalent O sites. In the first O site, O(2) is bonded in a bent 150 degrees geometry to one Al(1) and one P(1) atom. In the second O site, O(1) is bonded in a bent 150 degrees geometry to one Al(1) and one P(1) atom.