Ba3MnF12 crystallizes in the monoclinic C2/m space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to four equivalent F(1) and four equivalent F(3) atoms to form corner-sharing BaF8 hexagonal bipyramids. In the second Ba site, Ba(2) is bonded to two equivalent F(1), two equivalent F(3), and four equivalent F(2) atoms to form a mixture of distorted corner and edge-sharing BaF8 hexagonal bipyramids. Mn(1) is bonded in a distorted square co-planar geometry to four equivalent F(1) and four equivalent F(3) atoms. There are three inequivalent F sites. In the first F site, F(1) is bonded in a distorted T-shaped geometry to one Ba(1), one Ba(2), and one Mn(1) atom. In the second F site, F(2) is bonded in a water-like geometry to two equivalent Ba(2) atoms. In the third F site, F(3) is bonded in a distorted single-bond geometry to one Ba(1), one Ba(2), and one Mn(1) atom.
Ba3MnF12 crystallizes in the monoclinic C2/m space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to four equivalent F(1) and four equivalent F(3) atoms to form corner-sharing BaF8 hexagonal bipyramids. All Ba(1)-F(1) bond lengths are 2.69 Å. All Ba(1)-F(3) bond lengths are 2.79 Å. In the second Ba site, Ba(2) is bonded to two equivalent F(1), two equivalent F(3), and four equivalent F(2) atoms to form a mixture of distorted corner and edge-sharing BaF8 hexagonal bipyramids. Both Ba(2)-F(1) bond lengths are 2.96 Å. Both Ba(2)-F(3) bond lengths are 2.80 Å. There are two shorter (2.49 Å) and two longer (2.70 Å) Ba(2)-F(2) bond lengths. Mn(1) is bonded in a distorted square co-planar geometry to four equivalent F(1) and four equivalent F(3) atoms. All Mn(1)-F(1) bond lengths are 2.56 Å. All Mn(1)-F(3) bond lengths are 1.88 Å. There are three inequivalent F sites. In the first F site, F(1) is bonded in a distorted T-shaped geometry to one Ba(1), one Ba(2), and one Mn(1) atom. In the second F site, F(2) is bonded in a water-like geometry to two equivalent Ba(2) atoms. In the third F site, F(3) is bonded in a distorted single-bond geometry to one Ba(1), one Ba(2), and one Mn(1) atom.