The material described by BaMgCrF7 crystallizes in the monoclinic P2_1/c space group. Ba(1) is bonded in a 12-coordinate geometry to one F(1), one F(2), two equivalent F(3), two equivalent F(4), two equivalent F(5), 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 Cr(1)F6 octahedra and  an edgeedge with one Cr(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 47-53°. Cr(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 CrF6 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 47-53°. There are seven inequivalent F sites. In the first F site, F(1) is bonded in a distorted bent 120 degrees geometry to one Ba(1), one Mg(1), and one Cr(1) atom. In the second F site, F(2) is bonded in a distorted bent 120 degrees geometry to one Ba(1), one Mg(1), and one Cr(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 Cr(1) atom. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to two equivalent Ba(1) and one Cr(1) atom. In the fifth F site, F(5) is bonded in a 2-coordinate geometry to two equivalent Ba(1), one Mg(1), and one Cr(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 Cr(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. is represented by the Crystallographic Information File (CIF) [CIF]
data_BaMgCrF7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.957
_cell_length_b   5.629
_cell_length_c   9.720
_cell_angle_alpha   86.871
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   543.967
_cell_formula_units_Z   4
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ba  Ba0  1  0.323  0.737  0.499  1.0
  Ba  Ba1  1  0.823  0.263  0.001  1.0
  Ba  Ba2  1  0.677  0.263  0.501  1.0
  Ba  Ba3  1  0.177  0.737  0.999  1.0
  Mg  Mg4  1  0.395  0.305  0.811  1.0
  Mg  Mg5  1  0.895  0.695  0.689  1.0
  Mg  Mg6  1  0.105  0.305  0.311  1.0
  Mg  Mg7  1  0.605  0.695  0.189  1.0
  Cr  Cr8  1  0.613  0.806  0.813  1.0
  Cr  Cr9  1  0.387  0.194  0.187  1.0
  Cr  Cr10  1  0.887  0.806  0.313  1.0
  Cr  Cr11  1  0.113  0.194  0.687  1.0
  F  F12  1  0.448  0.889  0.126  1.0
  F  F13  1  0.049  0.631  0.369  1.0
  F  F14  1  0.712  0.528  0.751  1.0
  F  F15  1  0.288  0.472  0.249  1.0
  F  F16  1  0.457  0.112  0.367  1.0
  F  F17  1  0.810  0.741  0.499  1.0
  F  F18  1  0.779  0.972  0.752  1.0
  F  F19  1  0.957  0.888  0.133  1.0
  F  F20  1  0.451  0.631  0.869  1.0
  F  F21  1  0.212  0.472  0.749  1.0
  F  F22  1  0.052  0.889  0.626  1.0
  F  F23  1  0.552  0.111  0.874  1.0
  F  F24  1  0.279  0.028  0.748  1.0
  F  F25  1  0.957  0.614  0.873  1.0
  F  F26  1  0.543  0.888  0.633  1.0
  F  F27  1  0.043  0.112  0.867  1.0
  F  F28  1  0.221  0.028  0.248  1.0
  F  F29  1  0.948  0.111  0.374  1.0
  F  F30  1  0.457  0.386  0.627  1.0
  F  F31  1  0.951  0.369  0.631  1.0
  F  F32  1  0.043  0.386  0.127  1.0
  F  F33  1  0.721  0.972  0.252  1.0
  F  F34  1  0.543  0.614  0.373  1.0
  F  F35  1  0.310  0.259  0.001  1.0
  F  F36  1  0.190  0.259  0.501  1.0
  F  F37  1  0.690  0.741  0.999  1.0
  F  F38  1  0.549  0.369  0.131  1.0
  F  F39  1  0.788  0.528  0.251  1.0
[/CIF]
.
The material described by BaMgCrF7 crystallizes in the monoclinic P2_1/c space group. Ba(1) is bonded in a 12-coordinate geometry to one F(1), one F(2), two equivalent F(3), two equivalent F(4), two equivalent F(5), 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 Cr(1)F6 octahedra and  an edgeedge with one Cr(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 47-53°. Cr(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 CrF6 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 47-53°. There are seven inequivalent F sites. In the first F site, F(1) is bonded in a distorted bent 120 degrees geometry to one Ba(1), one Mg(1), and one Cr(1) atom. In the second F site, F(2) is bonded in a distorted bent 120 degrees geometry to one Ba(1), one Mg(1), and one Cr(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 Cr(1) atom. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to two equivalent Ba(1) and one Cr(1) atom. In the fifth F site, F(5) is bonded in a 2-coordinate geometry to two equivalent Ba(1), one Mg(1), and one Cr(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 Cr(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. is represented by the Crystallographic Information File (CIF) [CIF]
data_BaMgCrF7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.957
_cell_length_b   5.629
_cell_length_c   9.720
_cell_angle_alpha   86.871
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   543.967
_cell_formula_units_Z   4
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ba  Ba0  1  0.323  0.737  0.499  1.0
  Ba  Ba1  1  0.823  0.263  0.001  1.0
  Ba  Ba2  1  0.677  0.263  0.501  1.0
  Ba  Ba3  1  0.177  0.737  0.999  1.0
  Mg  Mg4  1  0.395  0.305  0.811  1.0
  Mg  Mg5  1  0.895  0.695  0.689  1.0
  Mg  Mg6  1  0.105  0.305  0.311  1.0
  Mg  Mg7  1  0.605  0.695  0.189  1.0
  Cr  Cr8  1  0.613  0.806  0.813  1.0
  Cr  Cr9  1  0.387  0.194  0.187  1.0
  Cr  Cr10  1  0.887  0.806  0.313  1.0
  Cr  Cr11  1  0.113  0.194  0.687  1.0
  F  F12  1  0.448  0.889  0.126  1.0
  F  F13  1  0.049  0.631  0.369  1.0
  F  F14  1  0.712  0.528  0.751  1.0
  F  F15  1  0.288  0.472  0.249  1.0
  F  F16  1  0.457  0.112  0.367  1.0
  F  F17  1  0.810  0.741  0.499  1.0
  F  F18  1  0.779  0.972  0.752  1.0
  F  F19  1  0.957  0.888  0.133  1.0
  F  F20  1  0.451  0.631  0.869  1.0
  F  F21  1  0.212  0.472  0.749  1.0
  F  F22  1  0.052  0.889  0.626  1.0
  F  F23  1  0.552  0.111  0.874  1.0
  F  F24  1  0.279  0.028  0.748  1.0
  F  F25  1  0.957  0.614  0.873  1.0
  F  F26  1  0.543  0.888  0.633  1.0
  F  F27  1  0.043  0.112  0.867  1.0
  F  F28  1  0.221  0.028  0.248  1.0
  F  F29  1  0.948  0.111  0.374  1.0
  F  F30  1  0.457  0.386  0.627  1.0
  F  F31  1  0.951  0.369  0.631  1.0
  F  F32  1  0.043  0.386  0.127  1.0
  F  F33  1  0.721  0.972  0.252  1.0
  F  F34  1  0.543  0.614  0.373  1.0
  F  F35  1  0.310  0.259  0.001  1.0
  F  F36  1  0.190  0.259  0.501  1.0
  F  F37  1  0.690  0.741  0.999  1.0
  F  F38  1  0.549  0.369  0.131  1.0
  F  F39  1  0.788  0.528  0.251  1.0
[/CIF]
.