BaMgSbF7 crystallizes in the monoclinic P2_1/c space group. Ba(1) is bonded in a 10-coordinate geometry to one F(2), one F(5), two equivalent F(3), two equivalent F(4), two equivalent F(6), and two equivalent F(7) atoms. Mg(1) is bonded to one F(1), one F(2), one F(3), one F(5), one F(6), and one F(7) atom to form MgF6 octahedra that share corners with three equivalent Sb(1)F6 octahedra and  an edgeedge with one Sb(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 47-68°. Sb(1) is bonded to one F(1), one F(2), one F(3), one F(4), one F(5), and one F(6) atom to form distorted SbF6 octahedra that share corners with three equivalent Mg(1)F6 octahedra and  an edgeedge with one Mg(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 47-68°. There are seven inequivalent F sites. In the first F site, F(1) is bonded in a distorted bent 120 degrees geometry to one Mg(1) and one Sb(1) atom. In the second F site, F(2) is bonded in a 3-coordinate geometry to one Ba(1), one Mg(1), and one Sb(1) atom. In the third F site, F(3) is bonded in a distorted water-like geometry to two equivalent Ba(1), one Mg(1), and one Sb(1) atom. In the fourth F site, F(4) is bonded in a distorted trigonal planar geometry to two equivalent Ba(1) and one Sb(1) atom. In the fifth F site, F(5) is bonded in a distorted trigonal planar geometry to one Ba(1), one Mg(1), and one Sb(1) atom. In the sixth F site, F(6) is bonded in a distorted water-like geometry to two equivalent Ba(1), one Mg(1), and one Sb(1) atom. In the seventh F site, F(7) is bonded in a distorted trigonal planar geometry to two equivalent Ba(1) and one Mg(1) atom.
BaMgSbF7 crystallizes in the monoclinic P2_1/c space group. Ba(1) is bonded in a 10-coordinate geometry to one F(2), one F(5), two equivalent F(3), two equivalent F(4), two equivalent F(6), and two equivalent F(7) atoms. The Ba(1)-F(2) bond length is 2.69 Å. The Ba(1)-F(5) bond length is 2.79 Å. There is one shorter (3.05 Å) and one longer (3.15 Å) Ba(1)-F(3) bond length. There is one shorter (2.76 Å) and one longer (2.86 Å) Ba(1)-F(4) bond length. There is one shorter (3.04 Å) and one longer (3.32 Å) Ba(1)-F(6) bond length. There is one shorter (2.66 Å) and one longer (2.67 Å) Ba(1)-F(7) bond length. Mg(1) is bonded to one F(1), one F(2), one F(3), one F(5), one F(6), and one F(7) atom to form MgF6 octahedra that share corners with three equivalent Sb(1)F6 octahedra and  an edgeedge with one Sb(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 47-68°. The Mg(1)-F(1) bond length is 2.02 Å. The Mg(1)-F(2) bond length is 1.98 Å. The Mg(1)-F(3) bond length is 2.04 Å. The Mg(1)-F(5) bond length is 2.03 Å. The Mg(1)-F(6) bond length is 2.17 Å. The Mg(1)-F(7) bond length is 1.95 Å. Sb(1) is bonded to one F(1), one F(2), one F(3), one F(4), one F(5), and one F(6) atom to form distorted SbF6 octahedra that share corners with three equivalent Mg(1)F6 octahedra and  an edgeedge with one Mg(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 47-68°. The Sb(1)-F(1) bond length is 2.11 Å. The Sb(1)-F(2) bond length is 2.57 Å. The Sb(1)-F(3) bond length is 2.22 Å. The Sb(1)-F(4) bond length is 2.11 Å. The Sb(1)-F(5) bond length is 2.25 Å. The Sb(1)-F(6) bond length is 2.11 Å. There are seven inequivalent F sites. In the first F site, F(1) is bonded in a distorted bent 120 degrees geometry to one Mg(1) and one Sb(1) atom. In the second F site, F(2) is bonded in a 3-coordinate geometry to one Ba(1), one Mg(1), and one Sb(1) atom. In the third F site, F(3) is bonded in a distorted water-like geometry to two equivalent Ba(1), one Mg(1), and one Sb(1) atom. In the fourth F site, F(4) is bonded in a distorted trigonal planar geometry to two equivalent Ba(1) and one Sb(1) atom. In the fifth F site, F(5) is bonded in a distorted trigonal planar geometry to one Ba(1), one Mg(1), and one Sb(1) atom. In the sixth F site, F(6) is bonded in a distorted water-like geometry to two equivalent Ba(1), one Mg(1), and one Sb(1) atom. In the seventh F site, F(7) is bonded in a distorted trigonal planar geometry to two equivalent Ba(1) and one Mg(1) atom.