The material described by Mg2AgSbO6 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 8-coordinate geometry to one O(3), one O(4), two equivalent O(2), and four equivalent O(1) atoms. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to one O(3), one O(4), and four equivalent O(2) atoms. Ag(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form distorted AgO6 octahedra that share corners with two equivalent Ag(1)O6 octahedra and corners with four equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-54°. Sb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra and corners with four equivalent Ag(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-54°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Mg(1), one Ag(1), and one Sb(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Mg(1), two equivalent Mg(2), one Ag(1), and one Sb(1) atom. In the third O site, O(3) is bonded to one Mg(1), one Mg(2), and two equivalent Sb(1) atoms to form OMg2Sb2 tetrahedra that share corners with two equivalent O(3)Mg2Sb2 tetrahedra and corners with two equivalent O(4)Mg2Ag2 trigonal pyramids. In the fourth O site, O(4) is bonded to one Mg(1), one Mg(2), and two equivalent Ag(1) atoms to form distorted OMg2Ag2 trigonal pyramids that share corners with two equivalent O(3)Mg2Sb2 tetrahedra and corners with two equivalent O(4)Mg2Ag2 trigonal pyramids. is represented by the CIF file [CIF]
data_Mg2AgSbO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.602
_cell_length_b   5.545
_cell_length_c   5.626
_cell_angle_alpha   80.758
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   234.076
_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  0.750  0.479  0.563  1.0
  Mg  Mg1  1  0.250  0.521  0.437  1.0
  Mg  Mg2  1  0.750  0.942  0.022  1.0
  Mg  Mg3  1  0.250  0.058  0.978  1.0
  Ag  Ag4  1  0.500  0.500  0.000  1.0
  Ag  Ag5  1  0.000  0.500  0.000  1.0
  Sb  Sb6  1  0.500  0.000  0.500  1.0
  Sb  Sb7  1  0.000  0.000  0.500  1.0
  O  O8  1  0.442  0.653  0.654  1.0
  O  O9  1  0.072  0.880  0.208  1.0
  O  O10  1  0.942  0.347  0.346  1.0
  O  O11  1  0.572  0.120  0.792  1.0
  O  O12  1  0.428  0.880  0.208  1.0
  O  O13  1  0.928  0.120  0.792  1.0
  O  O14  1  0.250  0.123  0.595  1.0
  O  O15  1  0.058  0.653  0.654  1.0
  O  O16  1  0.750  0.613  0.897  1.0
  O  O17  1  0.558  0.347  0.346  1.0
  O  O18  1  0.750  0.877  0.405  1.0
  O  O19  1  0.250  0.387  0.103  1.0
[/CIF]
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The material described by Mg2AgSbO6 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 8-coordinate geometry to one O(3), one O(4), two equivalent O(2), and four equivalent O(1) atoms. In the second Mg site, Mg(2) is bonded in a 4-coordinate geometry to one O(3), one O(4), and four equivalent O(2) atoms. Ag(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form distorted AgO6 octahedra that share corners with two equivalent Ag(1)O6 octahedra and corners with four equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-54°. Sb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra and corners with four equivalent Ag(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-54°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Mg(1), one Ag(1), and one Sb(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Mg(1), two equivalent Mg(2), one Ag(1), and one Sb(1) atom. In the third O site, O(3) is bonded to one Mg(1), one Mg(2), and two equivalent Sb(1) atoms to form OMg2Sb2 tetrahedra that share corners with two equivalent O(3)Mg2Sb2 tetrahedra and corners with two equivalent O(4)Mg2Ag2 trigonal pyramids. In the fourth O site, O(4) is bonded to one Mg(1), one Mg(2), and two equivalent Ag(1) atoms to form distorted OMg2Ag2 trigonal pyramids that share corners with two equivalent O(3)Mg2Sb2 tetrahedra and corners with two equivalent O(4)Mg2Ag2 trigonal pyramids. is represented by the CIF file [CIF]
data_Mg2AgSbO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.602
_cell_length_b   5.545
_cell_length_c   5.626
_cell_angle_alpha   80.758
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   234.076
_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  0.750  0.479  0.563  1.0
  Mg  Mg1  1  0.250  0.521  0.437  1.0
  Mg  Mg2  1  0.750  0.942  0.022  1.0
  Mg  Mg3  1  0.250  0.058  0.978  1.0
  Ag  Ag4  1  0.500  0.500  0.000  1.0
  Ag  Ag5  1  0.000  0.500  0.000  1.0
  Sb  Sb6  1  0.500  0.000  0.500  1.0
  Sb  Sb7  1  0.000  0.000  0.500  1.0
  O  O8  1  0.442  0.653  0.654  1.0
  O  O9  1  0.072  0.880  0.208  1.0
  O  O10  1  0.942  0.347  0.346  1.0
  O  O11  1  0.572  0.120  0.792  1.0
  O  O12  1  0.428  0.880  0.208  1.0
  O  O13  1  0.928  0.120  0.792  1.0
  O  O14  1  0.250  0.123  0.595  1.0
  O  O15  1  0.058  0.653  0.654  1.0
  O  O16  1  0.750  0.613  0.897  1.0
  O  O17  1  0.558  0.347  0.346  1.0
  O  O18  1  0.750  0.877  0.405  1.0
  O  O19  1  0.250  0.387  0.103  1.0
[/CIF]
.