The compound described by BiMg2VO6 crystallizes in the orthorhombic Cmcm space group. Mg(1) is bonded to one O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted MgO5 trigonal bipyramids that share corners with three equivalent V(1)O4 tetrahedra, corners with two equivalent Mg(1)O5 trigonal bipyramids, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. V(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form VO4 tetrahedra that share corners with six equivalent Mg(1)O5 trigonal bipyramids. Bi(1) is bonded in a 4-coordinate geometry to four equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mg(1) and one V(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Mg(1) and one V(1) atom. In the third O site, O(3) is bonded to two equivalent Mg(1) and two equivalent Bi(1) atoms to form a mixture of edge and corner-sharing OMg2Bi2 tetrahedra. is represented by the CIF file [CIF]
data_Mg2VBiO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.473
_cell_length_b   7.473
_cell_length_c   5.520
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   115.147
_symmetry_Int_Tables_number   1
_cell_volume   279.081
_cell_formula_units_Z   2
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
  Mg  Mg0  1  0.398  0.218  0.250  1.0
  Mg  Mg1  1  0.602  0.782  0.750  1.0
  Mg  Mg2  1  0.782  0.602  0.250  1.0
  Mg  Mg3  1  0.218  0.398  0.750  1.0
  V  V4  1  0.301  0.699  0.250  1.0
  V  V5  1  0.699  0.301  0.750  1.0
  Bi  Bi6  1  0.090  0.910  0.750  1.0
  Bi  Bi7  1  0.910  0.090  0.250  1.0
  O  O8  1  0.398  0.952  0.250  1.0
  O  O9  1  0.602  0.048  0.750  1.0
  O  O10  1  0.952  0.398  0.750  1.0
  O  O11  1  0.048  0.602  0.250  1.0
  O  O12  1  0.618  0.382  0.489  1.0
  O  O13  1  0.382  0.618  0.989  1.0
  O  O14  1  0.382  0.618  0.511  1.0
  O  O15  1  0.618  0.382  0.011  1.0
  O  O16  1  0.171  0.171  0.000  1.0
  O  O17  1  0.829  0.829  0.500  1.0
  O  O18  1  0.171  0.171  0.500  1.0
  O  O19  1  0.829  0.829  0.000  1.0
[/CIF]
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The compound described by BiMg2VO6 crystallizes in the orthorhombic Cmcm space group. Mg(1) is bonded to one O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted MgO5 trigonal bipyramids that share corners with three equivalent V(1)O4 tetrahedra, corners with two equivalent Mg(1)O5 trigonal bipyramids, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. V(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form VO4 tetrahedra that share corners with six equivalent Mg(1)O5 trigonal bipyramids. Bi(1) is bonded in a 4-coordinate geometry to four equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mg(1) and one V(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Mg(1) and one V(1) atom. In the third O site, O(3) is bonded to two equivalent Mg(1) and two equivalent Bi(1) atoms to form a mixture of edge and corner-sharing OMg2Bi2 tetrahedra. is represented by the CIF file [CIF]
data_Mg2VBiO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.473
_cell_length_b   7.473
_cell_length_c   5.520
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   115.147
_symmetry_Int_Tables_number   1
_cell_volume   279.081
_cell_formula_units_Z   2
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
  Mg  Mg0  1  0.398  0.218  0.250  1.0
  Mg  Mg1  1  0.602  0.782  0.750  1.0
  Mg  Mg2  1  0.782  0.602  0.250  1.0
  Mg  Mg3  1  0.218  0.398  0.750  1.0
  V  V4  1  0.301  0.699  0.250  1.0
  V  V5  1  0.699  0.301  0.750  1.0
  Bi  Bi6  1  0.090  0.910  0.750  1.0
  Bi  Bi7  1  0.910  0.090  0.250  1.0
  O  O8  1  0.398  0.952  0.250  1.0
  O  O9  1  0.602  0.048  0.750  1.0
  O  O10  1  0.952  0.398  0.750  1.0
  O  O11  1  0.048  0.602  0.250  1.0
  O  O12  1  0.618  0.382  0.489  1.0
  O  O13  1  0.382  0.618  0.989  1.0
  O  O14  1  0.382  0.618  0.511  1.0
  O  O15  1  0.618  0.382  0.011  1.0
  O  O16  1  0.171  0.171  0.000  1.0
  O  O17  1  0.829  0.829  0.500  1.0
  O  O18  1  0.171  0.171  0.500  1.0
  O  O19  1  0.829  0.829  0.000  1.0
[/CIF]
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