BAsO4 crystallizes in the trigonal P3_121 space group. B(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form BO4 tetrahedra that share corners with four equivalent As(1)O4 tetrahedra. As(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form AsO4 tetrahedra that share corners with four equivalent B(1)O4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one B(1) and one As(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one B(1) and one As(1) atom.
BAsO4 crystallizes in the trigonal P3_121 space group. B(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form BO4 tetrahedra that share corners with four equivalent As(1)O4 tetrahedra. Both B(1)-O(1) bond lengths are 1.47 Å. Both B(1)-O(2) bond lengths are 1.47 Å. As(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form AsO4 tetrahedra that share corners with four equivalent B(1)O4 tetrahedra. Both As(1)-O(1) bond lengths are 1.70 Å. Both As(1)-O(2) bond lengths are 1.68 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one B(1) and one As(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one B(1) and one As(1) atom.