The crystal structure described by MgV4Ag2O11 crystallizes in the monoclinic C2 space group. Mg(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(2), one O(5), and three equivalent O(6) atoms to form distorted VO6 octahedra that share corners with two equivalent V(1)O6 octahedra, corners with two equivalent Ag(1)O5 square pyramids, edges with two equivalent V(1)O6 octahedra, and edges with three equivalent V(2)O6 octahedra. The corner-sharing octahedral tilt angles are 30°. In the second V site, V(2) is bonded to one O(2), one O(3), one O(4), one O(6), and two equivalent O(5) atoms to form distorted VO6 octahedra that share corners with three equivalent V(2)O6 octahedra, corners with three equivalent Ag(1)O5 square pyramids, and edges with three equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-34°. Ag(1) is bonded to two equivalent O(1) and three equivalent O(3) atoms to form AgO5 square pyramids that share corners with two equivalent V(1)O6 octahedra, corners with three equivalent V(2)O6 octahedra, and edges with four equivalent Ag(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 36-68°. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one V(1), and two equivalent Ag(1) atoms to form distorted OMgVAg2 trigonal pyramids that share corners with three equivalent O(1)MgVAg2 trigonal pyramids and corners with three equivalent O(6)V4 trigonal pyramids. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(1), and one V(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one V(2) and three equivalent Ag(1) atoms. In the fourth O site, O(4) is bonded in a linear geometry to two equivalent V(2) atoms. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one V(1) and two equivalent V(2) atoms. In the sixth O site, O(6) is bonded to one V(2) and three equivalent V(1) atoms to form distorted OV4 trigonal pyramids that share corners with two equivalent O(6)V4 trigonal pyramids, corners with three equivalent O(1)MgVAg2 trigonal pyramids, and edges with two equivalent O(6)V4 trigonal pyramids. is represented by the CIF file [CIF]
data_MgV4Ag2O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.765
_cell_length_b   7.801
_cell_length_c   8.219
_cell_angle_alpha   85.952
_cell_angle_beta   76.759
_cell_angle_gamma   76.035
_symmetry_Int_Tables_number   1
_cell_volume   228.022
_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
  Mg  Mg0  1  0.493  0.500  0.500  1.0
  V  V1  1  0.629  0.124  0.602  1.0
  V  V2  1  0.355  0.876  0.398  1.0
  V  V3  1  0.831  0.138  0.188  1.0
  V  V4  1  0.158  0.862  0.812  1.0
  Ag  Ag5  1  0.848  0.471  0.822  1.0
  Ag  Ag6  1  0.141  0.529  0.178  1.0
  O  O7  1  0.476  0.333  0.703  1.0
  O  O8  1  0.512  0.667  0.297  1.0
  O  O9  1  0.658  0.270  0.394  1.0
  O  O10  1  0.323  0.730  0.606  1.0
  O  O11  1  0.785  0.337  0.086  1.0
  O  O12  1  0.207  0.663  0.914  1.0
  O  O13  1  0.991  0.000  0.000  1.0
  O  O14  1  0.341  0.075  0.227  1.0
  O  O15  1  0.822  0.941  0.399  1.0
  O  O16  1  0.162  0.059  0.601  1.0
  O  O17  1  0.643  0.925  0.773  1.0
[/CIF]
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The crystal structure described by MgV4Ag2O11 crystallizes in the monoclinic C2 space group. Mg(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(2), one O(5), and three equivalent O(6) atoms to form distorted VO6 octahedra that share corners with two equivalent V(1)O6 octahedra, corners with two equivalent Ag(1)O5 square pyramids, edges with two equivalent V(1)O6 octahedra, and edges with three equivalent V(2)O6 octahedra. The corner-sharing octahedral tilt angles are 30°. In the second V site, V(2) is bonded to one O(2), one O(3), one O(4), one O(6), and two equivalent O(5) atoms to form distorted VO6 octahedra that share corners with three equivalent V(2)O6 octahedra, corners with three equivalent Ag(1)O5 square pyramids, and edges with three equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-34°. Ag(1) is bonded to two equivalent O(1) and three equivalent O(3) atoms to form AgO5 square pyramids that share corners with two equivalent V(1)O6 octahedra, corners with three equivalent V(2)O6 octahedra, and edges with four equivalent Ag(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 36-68°. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one V(1), and two equivalent Ag(1) atoms to form distorted OMgVAg2 trigonal pyramids that share corners with three equivalent O(1)MgVAg2 trigonal pyramids and corners with three equivalent O(6)V4 trigonal pyramids. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(1), and one V(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one V(2) and three equivalent Ag(1) atoms. In the fourth O site, O(4) is bonded in a linear geometry to two equivalent V(2) atoms. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one V(1) and two equivalent V(2) atoms. In the sixth O site, O(6) is bonded to one V(2) and three equivalent V(1) atoms to form distorted OV4 trigonal pyramids that share corners with two equivalent O(6)V4 trigonal pyramids, corners with three equivalent O(1)MgVAg2 trigonal pyramids, and edges with two equivalent O(6)V4 trigonal pyramids. is represented by the CIF file [CIF]
data_MgV4Ag2O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.765
_cell_length_b   7.801
_cell_length_c   8.219
_cell_angle_alpha   85.952
_cell_angle_beta   76.759
_cell_angle_gamma   76.035
_symmetry_Int_Tables_number   1
_cell_volume   228.022
_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
  Mg  Mg0  1  0.493  0.500  0.500  1.0
  V  V1  1  0.629  0.124  0.602  1.0
  V  V2  1  0.355  0.876  0.398  1.0
  V  V3  1  0.831  0.138  0.188  1.0
  V  V4  1  0.158  0.862  0.812  1.0
  Ag  Ag5  1  0.848  0.471  0.822  1.0
  Ag  Ag6  1  0.141  0.529  0.178  1.0
  O  O7  1  0.476  0.333  0.703  1.0
  O  O8  1  0.512  0.667  0.297  1.0
  O  O9  1  0.658  0.270  0.394  1.0
  O  O10  1  0.323  0.730  0.606  1.0
  O  O11  1  0.785  0.337  0.086  1.0
  O  O12  1  0.207  0.663  0.914  1.0
  O  O13  1  0.991  0.000  0.000  1.0
  O  O14  1  0.341  0.075  0.227  1.0
  O  O15  1  0.822  0.941  0.399  1.0
  O  O16  1  0.162  0.059  0.601  1.0
  O  O17  1  0.643  0.925  0.773  1.0
[/CIF]
.