MgMo2(OBr)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one Br(1), one Br(2), and two equivalent Br(3) atoms to form corner-sharing MgBr4 tetrahedra. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 4-coordinate geometry to one O(3), one O(4), two equivalent O(2), one Br(2), and one Br(4) atom. In the second Mo site, Mo(2) is bonded in a distorted rectangular see-saw-like geometry to one O(3), one O(4), two equivalent O(1), one Br(1), and one Br(3) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to two equivalent Mo(2) atoms. In the second O site, O(2) is bonded in a linear geometry to two equivalent Mo(1) atoms. In the third O site, O(3) is bonded in a linear geometry to one Mo(1) and one Mo(2) atom. In the fourth O site, O(4) is bonded in a linear geometry to one Mo(1) and one Mo(2) atom. There are four inequivalent Br sites. In the first Br site, Br(1) is bonded in a bent 120 degrees geometry to one Mg(1) and one Mo(2) atom. In the second Br site, Br(2) is bonded in a distorted bent 120 degrees geometry to one Mg(1) and one Mo(1) atom. In the third Br site, Br(3) is bonded in a 3-coordinate geometry to two equivalent Mg(1) and one Mo(2) atom. In the fourth Br site, Br(4) is bonded in a single-bond geometry to one Mo(1) atom.
MgMo2(OBr)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one Br(1), one Br(2), and two equivalent Br(3) atoms to form corner-sharing MgBr4 tetrahedra. The Mg(1)-Br(1) bond length is 2.50 Å. The Mg(1)-Br(2) bond length is 2.43 Å. There is one shorter (2.56 Å) and one longer (2.58 Å) Mg(1)-Br(3) bond length. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 4-coordinate geometry to one O(3), one O(4), two equivalent O(2), one Br(2), and one Br(4) atom. The Mo(1)-O(3) bond length is 1.89 Å. The Mo(1)-O(4) bond length is 1.89 Å. There is one shorter (1.92 Å) and one longer (1.95 Å) Mo(1)-O(2) bond length. The Mo(1)-Br(2) bond length is 2.81 Å. The Mo(1)-Br(4) bond length is 2.49 Å. In the second Mo site, Mo(2) is bonded in a distorted rectangular see-saw-like geometry to one O(3), one O(4), two equivalent O(1), one Br(1), and one Br(3) atom. The Mo(2)-O(3) bond length is 1.99 Å. The Mo(2)-O(4) bond length is 1.98 Å. Both Mo(2)-O(1) bond lengths are 1.94 Å. The Mo(2)-Br(1) bond length is 2.61 Å. The Mo(2)-Br(3) bond length is 2.84 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to two equivalent Mo(2) atoms. In the second O site, O(2) is bonded in a linear geometry to two equivalent Mo(1) atoms. In the third O site, O(3) is bonded in a linear geometry to one Mo(1) and one Mo(2) atom. In the fourth O site, O(4) is bonded in a linear geometry to one Mo(1) and one Mo(2) atom. There are four inequivalent Br sites. In the first Br site, Br(1) is bonded in a bent 120 degrees geometry to one Mg(1) and one Mo(2) atom. In the second Br site, Br(2) is bonded in a distorted bent 120 degrees geometry to one Mg(1) and one Mo(1) atom. In the third Br site, Br(3) is bonded in a 3-coordinate geometry to two equivalent Mg(1) and one Mo(2) atom. In the fourth Br site, Br(4) is bonded in a single-bond geometry to one Mo(1) atom.