The crystal structure described by MgY4(AgO3)4 crystallizes in the monoclinic Pm space group. Mg(1) is bonded in a rectangular see-saw-like geometry to one O(5), one O(7), and two equivalent O(3) atoms. There are four inequivalent Y sites. In the first Y site, Y(1) is bonded in a 8-coordinate geometry to one O(6), one O(8), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the second Y site, Y(2) is bonded to one O(5), one O(7), two equivalent O(1), and two equivalent O(4) atoms to form edge-sharing YO6 pentagonal pyramids. In the third Y site, Y(3) is bonded to one O(6), one O(8), two equivalent O(1), and two equivalent O(4) atoms to form distorted edge-sharing YO6 pentagonal pyramids. In the fourth Y site, Y(4) is bonded in a 7-coordinate geometry to one O(5), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), one O(5), and one O(8) atom. In the second Ag site, Ag(2) is bonded in a rectangular see-saw-like geometry to one O(2), one O(3), one O(6), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Y(2), one Y(3), one Y(4), and one Ag(1) atom to form distorted OY3Ag trigonal pyramids that share  a cornercorner with one O(2)Y2Ag2 tetrahedra,  a cornercorner with one O(6)Y2Ag2 tetrahedra, corners with two equivalent O(3)Y2MgAg tetrahedra, corners with three equivalent O(4)Y3Ag tetrahedra,  a cornercorner with one O(5)Y2MgAg2 trigonal bipyramid,  a cornercorner with one O(1)Y3Ag trigonal pyramid,  a cornercorner with one O(7)YMgAg2 trigonal pyramid,  an edgeedge with one O(2)Y2Ag2 tetrahedra,  an edgeedge with one O(4)Y3Ag tetrahedra,  an edgeedge with one O(5)Y2MgAg2 trigonal bipyramid, and  an edgeedge with one O(1)Y3Ag trigonal pyramid. In the second O site, O(2) is bonded to one Y(1), one Y(4), one Ag(1), and one Ag(2) atom to form distorted OY2Ag2 tetrahedra that share corners with two equivalent O(2)Y2Ag2 tetrahedra, corners with two equivalent O(6)Y2Ag2 tetrahedra, corners with three equivalent O(3)Y2MgAg tetrahedra, corners with three equivalent O(4)Y3Ag tetrahedra,  a cornercorner with one O(1)Y3Ag trigonal pyramid,  a cornercorner with one O(7)YMgAg2 trigonal pyramid,  an edgeedge with one O(3)Y2MgAg tetrahedra,  an edgeedge with one O(5)Y2MgAg2 trigonal bipyramid, and  an edgeedge with one O(1)Y3Ag trigonal pyramid. In the third O site, O(3) is bonded to one Mg(1), one Y(1), one Y(4), and one Ag(2) atom to form distorted OY2MgAg tetrahedra that share  a cornercorner with one O(3)Y2MgAg tetrahedra, corners with two equivalent O(4)Y3Ag tetrahedra, corners with three equivalent O(2)Y2Ag2 tetrahedra, corners with two equivalent O(5)Y2MgAg2 trigonal bipyramids, corners with two equivalent O(1)Y3Ag trigonal pyramids,  an edgeedge with one O(2)Y2Ag2 tetrahedra,  an edgeedge with one O(6)Y2Ag2 tetrahedra,  an edgeedge with one O(3)Y2MgAg tetrahedra, and  an edgeedge with one O(7)YMgAg2 trigonal pyramid. In the fourth O site, O(4) is bonded to one Y(1), one Y(2), one Y(3), and one Ag(1) atom to form OY3Ag tetrahedra that share  a cornercorner with one O(4)Y3Ag tetrahedra, corners with two equivalent O(6)Y2Ag2 tetrahedra, corners with two equivalent O(3)Y2MgAg tetrahedra, corners with three equivalent O(2)Y2Ag2 tetrahedra,  a cornercorner with one O(7)YMgAg2 trigonal pyramid, corners with three equivalent O(1)Y3Ag trigonal pyramids,  an edgeedge with one O(4)Y3Ag tetrahedra,  an edgeedge with one O(5)Y2MgAg2 trigonal bipyramid, and  an edgeedge with one O(1)Y3Ag trigonal pyramid. In the fifth O site, O(5) is bonded to one Mg(1), one Y(2), one Y(4), and two equivalent Ag(1) atoms to form distorted OY2MgAg2 trigonal bipyramids that share corners with four equivalent O(3)Y2MgAg tetrahedra, corners with two equivalent O(1)Y3Ag trigonal pyramids, corners with two equivalent O(7)YMgAg2 trigonal pyramids, edges with two equivalent O(2)Y2Ag2 tetrahedra, edges with two equivalent O(4)Y3Ag tetrahedra, and edges with two equivalent O(1)Y3Ag trigonal pyramids. In the sixth O site, O(6) is bonded to one Y(1), one Y(3), and two equivalent Ag(2) atoms to form distorted OY2Ag2 tetrahedra that share corners with four equivalent O(2)Y2Ag2 tetrahedra, corners with four equivalent O(4)Y3Ag tetrahedra, corners with two equivalent O(1)Y3Ag trigonal pyramids, corners with two equivalent O(7)YMgAg2 trigonal pyramids, and edges with two equivalent O(3)Y2MgAg tetrahedra. In the seventh O site, O(7) is bonded to one Mg(1), one Y(2), and two equivalent Ag(2) atoms to form OYMgAg2 trigonal pyramids that share corners with two equivalent O(2)Y2Ag2 tetrahedra, corners with two equivalent O(6)Y2Ag2 tetrahedra, corners with two equivalent O(4)Y3Ag tetrahedra, corners with two equivalent O(5)Y2MgAg2 trigonal bipyramids, corners with two equivalent O(1)Y3Ag trigonal pyramids, and edges with two equivalent O(3)Y2MgAg tetrahedra. In the eighth O site, O(8) is bonded in a rectangular see-saw-like geometry to one Y(1), one Y(3), and two equivalent Ag(1) atoms. is represented by the CIF card [CIF]
data_Y4Mg(AgO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.203
_cell_length_b   6.964
_cell_length_c   7.080
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   72.930
_symmetry_Int_Tables_number   1
_cell_volume   292.385
_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
  Y  Y0  1  0.038  0.883  0.750  1.0
  Y  Y1  1  0.429  0.542  0.250  1.0
  Y  Y2  1  0.566  0.460  0.750  1.0
  Y  Y3  1  0.966  0.146  0.250  1.0
  Mg  Mg4  1  0.852  0.719  0.250  1.0
  Ag  Ag5  1  0.031  0.459  0.547  1.0
  Ag  Ag6  1  0.520  0.997  0.503  1.0
  Ag  Ag7  1  0.520  0.997  0.997  1.0
  Ag  Ag8  1  0.031  0.459  0.953  1.0
  O  O9  1  0.722  0.381  0.445  1.0
  O  O10  1  0.181  0.082  0.532  1.0
  O  O11  1  0.859  0.918  0.051  1.0
  O  O12  1  0.281  0.624  0.946  1.0
  O  O13  1  0.281  0.624  0.554  1.0
  O  O14  1  0.859  0.918  0.449  1.0
  O  O15  1  0.181  0.082  0.968  1.0
  O  O16  1  0.722  0.381  0.055  1.0
  O  O17  1  0.114  0.440  0.250  1.0
  O  O18  1  0.597  0.121  0.750  1.0
  O  O19  1  0.503  0.841  0.250  1.0
  O  O20  1  0.803  0.652  0.750  1.0
[/CIF]
.
The crystal structure described by MgY4(AgO3)4 crystallizes in the monoclinic Pm space group. Mg(1) is bonded in a rectangular see-saw-like geometry to one O(5), one O(7), and two equivalent O(3) atoms. There are four inequivalent Y sites. In the first Y site, Y(1) is bonded in a 8-coordinate geometry to one O(6), one O(8), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the second Y site, Y(2) is bonded to one O(5), one O(7), two equivalent O(1), and two equivalent O(4) atoms to form edge-sharing YO6 pentagonal pyramids. In the third Y site, Y(3) is bonded to one O(6), one O(8), two equivalent O(1), and two equivalent O(4) atoms to form distorted edge-sharing YO6 pentagonal pyramids. In the fourth Y site, Y(4) is bonded in a 7-coordinate geometry to one O(5), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), one O(5), and one O(8) atom. In the second Ag site, Ag(2) is bonded in a rectangular see-saw-like geometry to one O(2), one O(3), one O(6), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Y(2), one Y(3), one Y(4), and one Ag(1) atom to form distorted OY3Ag trigonal pyramids that share  a cornercorner with one O(2)Y2Ag2 tetrahedra,  a cornercorner with one O(6)Y2Ag2 tetrahedra, corners with two equivalent O(3)Y2MgAg tetrahedra, corners with three equivalent O(4)Y3Ag tetrahedra,  a cornercorner with one O(5)Y2MgAg2 trigonal bipyramid,  a cornercorner with one O(1)Y3Ag trigonal pyramid,  a cornercorner with one O(7)YMgAg2 trigonal pyramid,  an edgeedge with one O(2)Y2Ag2 tetrahedra,  an edgeedge with one O(4)Y3Ag tetrahedra,  an edgeedge with one O(5)Y2MgAg2 trigonal bipyramid, and  an edgeedge with one O(1)Y3Ag trigonal pyramid. In the second O site, O(2) is bonded to one Y(1), one Y(4), one Ag(1), and one Ag(2) atom to form distorted OY2Ag2 tetrahedra that share corners with two equivalent O(2)Y2Ag2 tetrahedra, corners with two equivalent O(6)Y2Ag2 tetrahedra, corners with three equivalent O(3)Y2MgAg tetrahedra, corners with three equivalent O(4)Y3Ag tetrahedra,  a cornercorner with one O(1)Y3Ag trigonal pyramid,  a cornercorner with one O(7)YMgAg2 trigonal pyramid,  an edgeedge with one O(3)Y2MgAg tetrahedra,  an edgeedge with one O(5)Y2MgAg2 trigonal bipyramid, and  an edgeedge with one O(1)Y3Ag trigonal pyramid. In the third O site, O(3) is bonded to one Mg(1), one Y(1), one Y(4), and one Ag(2) atom to form distorted OY2MgAg tetrahedra that share  a cornercorner with one O(3)Y2MgAg tetrahedra, corners with two equivalent O(4)Y3Ag tetrahedra, corners with three equivalent O(2)Y2Ag2 tetrahedra, corners with two equivalent O(5)Y2MgAg2 trigonal bipyramids, corners with two equivalent O(1)Y3Ag trigonal pyramids,  an edgeedge with one O(2)Y2Ag2 tetrahedra,  an edgeedge with one O(6)Y2Ag2 tetrahedra,  an edgeedge with one O(3)Y2MgAg tetrahedra, and  an edgeedge with one O(7)YMgAg2 trigonal pyramid. In the fourth O site, O(4) is bonded to one Y(1), one Y(2), one Y(3), and one Ag(1) atom to form OY3Ag tetrahedra that share  a cornercorner with one O(4)Y3Ag tetrahedra, corners with two equivalent O(6)Y2Ag2 tetrahedra, corners with two equivalent O(3)Y2MgAg tetrahedra, corners with three equivalent O(2)Y2Ag2 tetrahedra,  a cornercorner with one O(7)YMgAg2 trigonal pyramid, corners with three equivalent O(1)Y3Ag trigonal pyramids,  an edgeedge with one O(4)Y3Ag tetrahedra,  an edgeedge with one O(5)Y2MgAg2 trigonal bipyramid, and  an edgeedge with one O(1)Y3Ag trigonal pyramid. In the fifth O site, O(5) is bonded to one Mg(1), one Y(2), one Y(4), and two equivalent Ag(1) atoms to form distorted OY2MgAg2 trigonal bipyramids that share corners with four equivalent O(3)Y2MgAg tetrahedra, corners with two equivalent O(1)Y3Ag trigonal pyramids, corners with two equivalent O(7)YMgAg2 trigonal pyramids, edges with two equivalent O(2)Y2Ag2 tetrahedra, edges with two equivalent O(4)Y3Ag tetrahedra, and edges with two equivalent O(1)Y3Ag trigonal pyramids. In the sixth O site, O(6) is bonded to one Y(1), one Y(3), and two equivalent Ag(2) atoms to form distorted OY2Ag2 tetrahedra that share corners with four equivalent O(2)Y2Ag2 tetrahedra, corners with four equivalent O(4)Y3Ag tetrahedra, corners with two equivalent O(1)Y3Ag trigonal pyramids, corners with two equivalent O(7)YMgAg2 trigonal pyramids, and edges with two equivalent O(3)Y2MgAg tetrahedra. In the seventh O site, O(7) is bonded to one Mg(1), one Y(2), and two equivalent Ag(2) atoms to form OYMgAg2 trigonal pyramids that share corners with two equivalent O(2)Y2Ag2 tetrahedra, corners with two equivalent O(6)Y2Ag2 tetrahedra, corners with two equivalent O(4)Y3Ag tetrahedra, corners with two equivalent O(5)Y2MgAg2 trigonal bipyramids, corners with two equivalent O(1)Y3Ag trigonal pyramids, and edges with two equivalent O(3)Y2MgAg tetrahedra. In the eighth O site, O(8) is bonded in a rectangular see-saw-like geometry to one Y(1), one Y(3), and two equivalent Ag(1) atoms. is represented by the CIF card [CIF]
data_Y4Mg(AgO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.203
_cell_length_b   6.964
_cell_length_c   7.080
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   72.930
_symmetry_Int_Tables_number   1
_cell_volume   292.385
_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
  Y  Y0  1  0.038  0.883  0.750  1.0
  Y  Y1  1  0.429  0.542  0.250  1.0
  Y  Y2  1  0.566  0.460  0.750  1.0
  Y  Y3  1  0.966  0.146  0.250  1.0
  Mg  Mg4  1  0.852  0.719  0.250  1.0
  Ag  Ag5  1  0.031  0.459  0.547  1.0
  Ag  Ag6  1  0.520  0.997  0.503  1.0
  Ag  Ag7  1  0.520  0.997  0.997  1.0
  Ag  Ag8  1  0.031  0.459  0.953  1.0
  O  O9  1  0.722  0.381  0.445  1.0
  O  O10  1  0.181  0.082  0.532  1.0
  O  O11  1  0.859  0.918  0.051  1.0
  O  O12  1  0.281  0.624  0.946  1.0
  O  O13  1  0.281  0.624  0.554  1.0
  O  O14  1  0.859  0.918  0.449  1.0
  O  O15  1  0.181  0.082  0.968  1.0
  O  O16  1  0.722  0.381  0.055  1.0
  O  O17  1  0.114  0.440  0.250  1.0
  O  O18  1  0.597  0.121  0.750  1.0
  O  O19  1  0.503  0.841  0.250  1.0
  O  O20  1  0.803  0.652  0.750  1.0
[/CIF]
.