The structure described by Ba6MgCr2O10 crystallizes in the triclinic P1 space group. There are six inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 5-coordinate geometry to one O(1), one O(10), one O(4), one O(7), and one O(9) atom. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(7), one O(8), and one O(9) atom. In the third Ba site, Ba(3) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(3), one O(4), one O(5), one O(6), and one O(9) atom. In the fourth Ba site, Ba(4) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(5), one O(7), and one O(8) atom. In the fifth Ba site, Ba(5) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(6), one O(7), one O(8), and one O(9) atom. In the sixth Ba site, Ba(6) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(9) atom. Mg(1) is bonded to one O(2), one O(5), one O(6), and one O(8) atom to form MgO4 tetrahedra that share  a cornercorner with one Cr(2)O4 tetrahedra and  an edgeedge with one Cr(1)O4 trigonal pyramid. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(4), one O(5), one O(8), and one O(9) atom to form distorted CrO4 trigonal pyramids that share  an edgeedge with one Mg(1)O4 tetrahedra. In the second Cr site, Cr(2) is bonded to one O(10), one O(3), one O(6), and one O(7) atom to form distorted CrO4 tetrahedra that share  a cornercorner with one Mg(1)O4 tetrahedra. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Ba(1), one Ba(2), one Ba(3), one Ba(4), one Ba(5), and one Ba(6) atom to form a mixture of distorted corner and edge-sharing OBa6 octahedra. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Ba(2), one Ba(4), one Ba(5), one Ba(6), and one Mg(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Ba(2), one Ba(3), one Ba(4), one Ba(5), and one Cr(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(2), one Ba(3), one Ba(4), and one Cr(1) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Ba(3), one Ba(4), one Ba(6), one Mg(1), and one Cr(1) atom. In the sixth O site, O(6) is bonded to one Ba(3), one Ba(5), one Ba(6), one Mg(1), and one Cr(2) atom to form a mixture of distorted corner and edge-sharing OBa3MgCr square pyramids. The corner-sharing octahedral tilt angles are 58°. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(2), one Ba(4), one Ba(5), one Ba(6), and one Cr(2) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Ba(2), one Ba(4), one Ba(5), one Mg(1), and one Cr(1) atom. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(2), one Ba(3), one Ba(5), one Ba(6), and one Cr(1) atom. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(2), one Ba(3), one Ba(4), and one Cr(2) atom. is represented by the CIF card [CIF]
data_Ba6MgCr2O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.374
_cell_length_b   9.445
_cell_length_c   8.356
_cell_angle_alpha   127.944
_cell_angle_beta   81.889
_cell_angle_gamma   122.320
_symmetry_Int_Tables_number   1
_cell_volume   372.186
_cell_formula_units_Z   1
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  0.783  0.568  0.666  1.0
  Ba  Ba1  1  0.226  0.441  0.312  1.0
  Ba  Ba2  1  0.313  0.029  0.132  1.0
  Ba  Ba3  1  0.703  0.017  0.840  1.0
  Ba  Ba4  1  0.220  0.052  0.664  1.0
  Ba  Ba5  1  0.778  0.933  0.297  1.0
  Mg  Mg6  1  0.215  0.666  0.153  1.0
  Cr  Cr7  1  0.247  0.495  0.760  1.0
  Cr  Cr8  1  0.765  0.517  0.223  1.0
  O  O9  1  0.970  0.980  0.994  1.0
  O  O10  1  0.407  0.828  0.426  1.0
  O  O11  1  0.503  0.264  0.003  1.0
  O  O12  1  0.165  0.614  0.696  1.0
  O  O13  1  0.449  0.780  0.030  1.0
  O  O14  1  0.992  0.737  0.200  1.0
  O  O15  1  0.752  0.728  0.493  1.0
  O  O16  1  0.101  0.354  0.890  1.0
  O  O17  1  0.305  0.291  0.536  1.0
  O  O18  1  0.811  0.357  0.266  1.0
[/CIF]
.
The structure described by Ba6MgCr2O10 crystallizes in the triclinic P1 space group. There are six inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 5-coordinate geometry to one O(1), one O(10), one O(4), one O(7), and one O(9) atom. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(7), one O(8), and one O(9) atom. In the third Ba site, Ba(3) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(3), one O(4), one O(5), one O(6), and one O(9) atom. In the fourth Ba site, Ba(4) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(5), one O(7), and one O(8) atom. In the fifth Ba site, Ba(5) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(6), one O(7), one O(8), and one O(9) atom. In the sixth Ba site, Ba(6) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(9) atom. Mg(1) is bonded to one O(2), one O(5), one O(6), and one O(8) atom to form MgO4 tetrahedra that share  a cornercorner with one Cr(2)O4 tetrahedra and  an edgeedge with one Cr(1)O4 trigonal pyramid. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(4), one O(5), one O(8), and one O(9) atom to form distorted CrO4 trigonal pyramids that share  an edgeedge with one Mg(1)O4 tetrahedra. In the second Cr site, Cr(2) is bonded to one O(10), one O(3), one O(6), and one O(7) atom to form distorted CrO4 tetrahedra that share  a cornercorner with one Mg(1)O4 tetrahedra. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Ba(1), one Ba(2), one Ba(3), one Ba(4), one Ba(5), and one Ba(6) atom to form a mixture of distorted corner and edge-sharing OBa6 octahedra. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Ba(2), one Ba(4), one Ba(5), one Ba(6), and one Mg(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Ba(2), one Ba(3), one Ba(4), one Ba(5), and one Cr(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(2), one Ba(3), one Ba(4), and one Cr(1) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Ba(3), one Ba(4), one Ba(6), one Mg(1), and one Cr(1) atom. In the sixth O site, O(6) is bonded to one Ba(3), one Ba(5), one Ba(6), one Mg(1), and one Cr(2) atom to form a mixture of distorted corner and edge-sharing OBa3MgCr square pyramids. The corner-sharing octahedral tilt angles are 58°. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(2), one Ba(4), one Ba(5), one Ba(6), and one Cr(2) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Ba(2), one Ba(4), one Ba(5), one Mg(1), and one Cr(1) atom. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(2), one Ba(3), one Ba(5), one Ba(6), and one Cr(1) atom. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Ba(1), one Ba(2), one Ba(3), one Ba(4), and one Cr(2) atom. is represented by the CIF card [CIF]
data_Ba6MgCr2O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.374
_cell_length_b   9.445
_cell_length_c   8.356
_cell_angle_alpha   127.944
_cell_angle_beta   81.889
_cell_angle_gamma   122.320
_symmetry_Int_Tables_number   1
_cell_volume   372.186
_cell_formula_units_Z   1
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  0.783  0.568  0.666  1.0
  Ba  Ba1  1  0.226  0.441  0.312  1.0
  Ba  Ba2  1  0.313  0.029  0.132  1.0
  Ba  Ba3  1  0.703  0.017  0.840  1.0
  Ba  Ba4  1  0.220  0.052  0.664  1.0
  Ba  Ba5  1  0.778  0.933  0.297  1.0
  Mg  Mg6  1  0.215  0.666  0.153  1.0
  Cr  Cr7  1  0.247  0.495  0.760  1.0
  Cr  Cr8  1  0.765  0.517  0.223  1.0
  O  O9  1  0.970  0.980  0.994  1.0
  O  O10  1  0.407  0.828  0.426  1.0
  O  O11  1  0.503  0.264  0.003  1.0
  O  O12  1  0.165  0.614  0.696  1.0
  O  O13  1  0.449  0.780  0.030  1.0
  O  O14  1  0.992  0.737  0.200  1.0
  O  O15  1  0.752  0.728  0.493  1.0
  O  O16  1  0.101  0.354  0.890  1.0
  O  O17  1  0.305  0.291  0.536  1.0
  O  O18  1  0.811  0.357  0.266  1.0
[/CIF]
.