Cs2Mg(ReO4)2 crystallizes in the monoclinic C2/m space group. Cs(1) is bonded in a 6-coordinate geometry to one O(1), two equivalent O(2), and three equivalent O(3) atoms. Mg(1) is bonded in a square co-planar geometry to four equivalent O(2) atoms. Re(1) is bonded in a tetrahedral geometry to one O(1), one O(3), and two equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cs(1) and one Re(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Cs(1), one Mg(1), and one Re(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to three equivalent Cs(1) and one Re(1) atom.
Cs2Mg(ReO4)2 crystallizes in the monoclinic C2/m space group. Cs(1) is bonded in a 6-coordinate geometry to one O(1), two equivalent O(2), and three equivalent O(3) atoms. The Cs(1)-O(1) bond length is 3.06 Å. Both Cs(1)-O(2) bond lengths are 3.13 Å. There is one shorter (3.14 Å) and two longer (3.20 Å) Cs(1)-O(3) bond lengths. Mg(1) is bonded in a square co-planar geometry to four equivalent O(2) atoms. All Mg(1)-O(2) bond lengths are 1.99 Å. Re(1) is bonded in a tetrahedral geometry to one O(1), one O(3), and two equivalent O(2) atoms. The Re(1)-O(1) bond length is 1.77 Å. The Re(1)-O(3) bond length is 1.79 Å. Both Re(1)-O(2) bond lengths are 1.83 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cs(1) and one Re(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Cs(1), one Mg(1), and one Re(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to three equivalent Cs(1) and one Re(1) atom.