The material described by MgAg2(HgO2)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(3), and two equivalent O(4) atoms to form corner-sharing MgO4 tetrahedra. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a distorted T-shaped geometry to one O(2) and two equivalent O(3) atoms. In the second Ag site, Ag(2) is bonded in a linear geometry to one O(1) and one O(2) atom. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a linear geometry to one O(3) and one O(4) atom. In the second Hg site, Hg(2) is bonded in a distorted linear geometry to one O(1) and one O(2) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Ag(2), and one Hg(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ag(1), one Ag(2), and one Hg(2) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), two equivalent Ag(1), and one Hg(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to two equivalent Mg(1) and one Hg(1) atom. is represented by the CIF file [CIF]
data_MgAg2(HgO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.579
_cell_length_b   13.856
_cell_length_c   7.362
_cell_angle_alpha   152.550
_cell_angle_beta   76.208
_cell_angle_gamma   99.832
_symmetry_Int_Tables_number   1
_cell_volume   162.770
_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  0.174  0.128  0.613  1.0
  Ag  Ag1  1  0.555  0.807  0.313  1.0
  Ag  Ag2  1  0.015  0.506  0.006  1.0
  Hg  Hg3  1  0.445  0.534  0.500  1.0
  Hg  Hg4  1  0.990  0.009  0.018  1.0
  O  O5  1  0.292  0.202  0.467  1.0
  O  O6  1  0.682  0.792  0.562  1.0
  O  O7  1  0.245  0.816  0.104  1.0
  O  O8  1  0.603  0.233  0.892  1.0
[/CIF]
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The material described by MgAg2(HgO2)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(3), and two equivalent O(4) atoms to form corner-sharing MgO4 tetrahedra. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a distorted T-shaped geometry to one O(2) and two equivalent O(3) atoms. In the second Ag site, Ag(2) is bonded in a linear geometry to one O(1) and one O(2) atom. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a linear geometry to one O(3) and one O(4) atom. In the second Hg site, Hg(2) is bonded in a distorted linear geometry to one O(1) and one O(2) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Ag(2), and one Hg(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Ag(1), one Ag(2), and one Hg(2) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), two equivalent Ag(1), and one Hg(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to two equivalent Mg(1) and one Hg(1) atom. is represented by the CIF file [CIF]
data_MgAg2(HgO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.579
_cell_length_b   13.856
_cell_length_c   7.362
_cell_angle_alpha   152.550
_cell_angle_beta   76.208
_cell_angle_gamma   99.832
_symmetry_Int_Tables_number   1
_cell_volume   162.770
_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  0.174  0.128  0.613  1.0
  Ag  Ag1  1  0.555  0.807  0.313  1.0
  Ag  Ag2  1  0.015  0.506  0.006  1.0
  Hg  Hg3  1  0.445  0.534  0.500  1.0
  Hg  Hg4  1  0.990  0.009  0.018  1.0
  O  O5  1  0.292  0.202  0.467  1.0
  O  O6  1  0.682  0.792  0.562  1.0
  O  O7  1  0.245  0.816  0.104  1.0
  O  O8  1  0.603  0.233  0.892  1.0
[/CIF]
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