LiMo2AsO9 crystallizes in the orthorhombic Pmmn space group. Li(1) is bonded in a distorted trigonal bipyramidal geometry to one O(4) and four equivalent O(2) atoms. Mo(1) is bonded in a 6-coordinate geometry to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms. As(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(3) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mo(1) and one As(1) atom. In the second O site, O(2) is bonded in a linear geometry to one Li(1) and one Mo(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Mo(1) and one As(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(1) and two equivalent Mo(1) atoms.
LiMo2AsO9 crystallizes in the orthorhombic Pmmn space group. Li(1) is bonded in a distorted trigonal bipyramidal geometry to one O(4) and four equivalent O(2) atoms. The Li(1)-O(4) bond length is 2.05 Å. All Li(1)-O(2) bond lengths are 2.07 Å. Mo(1) is bonded in a 6-coordinate geometry to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms. The Mo(1)-O(1) bond length is 1.99 Å. The Mo(1)-O(4) bond length is 1.96 Å. Both Mo(1)-O(2) bond lengths are 1.73 Å. Both Mo(1)-O(3) bond lengths are 2.35 Å. As(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(3) atoms. Both As(1)-O(1) bond lengths are 1.72 Å. Both As(1)-O(3) bond lengths are 1.71 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mo(1) and one As(1) atom. In the second O site, O(2) is bonded in a linear geometry to one Li(1) and one Mo(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Mo(1) and one As(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(1) and two equivalent Mo(1) atoms.