The crystal structure described by MgZn4(SnO2)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(3), and two equivalent O(8) atoms to form MgO4 tetrahedra that share corners with two equivalent Zn(4)O5 square pyramids, corners with two equivalent Mg(1)O4 tetrahedra, and edges with two equivalent Zn(3)O4 trigonal pyramids. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(4), one O(6), and two equivalent O(7) atoms to form ZnO4 tetrahedra that share  a cornercorner with one Zn(4)O5 square pyramid, corners with two equivalent Zn(1)O4 tetrahedra, and corners with two equivalent Zn(3)O4 trigonal pyramids. In the second Zn site, Zn(2) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(1), and two equivalent O(5) atoms. In the third Zn site, Zn(3) is bonded to one O(7), one O(8), and two equivalent O(3) atoms to form distorted ZnO4 trigonal pyramids that share  a cornercorner with one Zn(4)O5 square pyramid, corners with two equivalent Zn(1)O4 tetrahedra, corners with two equivalent Zn(3)O4 trigonal pyramids, and edges with two equivalent Mg(1)O4 tetrahedra. In the fourth Zn site, Zn(4) is bonded to one O(5), one O(6), one O(8), and two equivalent O(2) atoms to form distorted ZnO5 square pyramids that share corners with two equivalent Zn(4)O5 square pyramids,  a cornercorner with one Zn(1)O4 tetrahedra, corners with two equivalent Mg(1)O4 tetrahedra, and  a cornercorner with one Zn(3)O4 trigonal pyramid. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 3-coordinate geometry to one O(5) and two equivalent O(4) atoms. In the second Sn site, Sn(2) is bonded in a distorted T-shaped geometry to one O(2) and two equivalent O(6) atoms. In the third Sn site, Sn(3) is bonded in a water-like geometry to one O(2) and one O(3) atom. In the fourth Sn site, Sn(4) is bonded in a water-like geometry to one O(1) and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), two equivalent Zn(2), and one Sn(4) atom. In the second O site, O(2) is bonded to two equivalent Zn(4), one Sn(2), and one Sn(3) atom to form OZn2Sn2 tetrahedra that share corners with two equivalent O(2)Zn2Sn2 tetrahedra,  a cornercorner with one O(3)MgZn2Sn trigonal pyramid, and corners with two equivalent O(5)Zn3Sn trigonal pyramids. In the third O site, O(3) is bonded to one Mg(1), two equivalent Zn(3), and one Sn(3) atom to form OMgZn2Sn trigonal pyramids that share  a cornercorner with one O(2)Zn2Sn2 tetrahedra, corners with two equivalent O(7)Zn3Sn tetrahedra, and corners with two equivalent O(3)MgZn2Sn trigonal pyramids. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Zn(1), one Zn(2), and two equivalent Sn(1) atoms. In the fifth O site, O(5) is bonded to one Zn(4), two equivalent Zn(2), and one Sn(1) atom to form distorted OZn3Sn trigonal pyramids that share corners with two equivalent O(2)Zn2Sn2 tetrahedra and corners with two equivalent O(5)Zn3Sn trigonal pyramids. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Zn(1), one Zn(4), and two equivalent Sn(2) atoms. In the seventh O site, O(7) is bonded to one Zn(3), two equivalent Zn(1), and one Sn(4) atom to form OZn3Sn tetrahedra that share corners with two equivalent O(7)Zn3Sn tetrahedra and corners with two equivalent O(3)MgZn2Sn trigonal pyramids. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to two equivalent Mg(1), one Zn(3), and one Zn(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgZn4(SnO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.287
_cell_length_b   9.013
_cell_length_c   9.528
_cell_angle_alpha   93.425
_cell_angle_beta   81.094
_cell_angle_gamma   81.034
_symmetry_Int_Tables_number   1
_cell_volume   274.509
_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  0.980  0.846  0.837  1.0
  Zn  Zn1  1  0.640  0.006  0.288  1.0
  Zn  Zn2  1  0.468  0.996  0.646  1.0
  Zn  Zn3  1  0.388  0.782  0.072  1.0
  Zn  Zn4  1  0.634  0.155  0.933  1.0
  Sn  Sn5  1  0.865  0.279  0.553  1.0
  Sn  Sn6  1  0.989  0.341  0.195  1.0
  Sn  Sn7  1  0.097  0.485  0.827  1.0
  Sn  Sn8  1  0.226  0.692  0.434  1.0
  O  O9  1  0.078  0.839  0.625  1.0
  O  O10  1  0.089  0.313  0.969  1.0
  O  O11  1  0.970  0.685  0.981  1.0
  O  O12  1  0.471  0.125  0.476  1.0
  O  O13  1  0.846  0.136  0.723  1.0
  O  O14  1  0.581  0.177  0.160  1.0
  O  O15  1  0.205  0.872  0.272  1.0
  O  O16  1  0.406  0.946  0.914  1.0
[/CIF]
.
The crystal structure described by MgZn4(SnO2)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(3), and two equivalent O(8) atoms to form MgO4 tetrahedra that share corners with two equivalent Zn(4)O5 square pyramids, corners with two equivalent Mg(1)O4 tetrahedra, and edges with two equivalent Zn(3)O4 trigonal pyramids. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(4), one O(6), and two equivalent O(7) atoms to form ZnO4 tetrahedra that share  a cornercorner with one Zn(4)O5 square pyramid, corners with two equivalent Zn(1)O4 tetrahedra, and corners with two equivalent Zn(3)O4 trigonal pyramids. In the second Zn site, Zn(2) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(1), and two equivalent O(5) atoms. In the third Zn site, Zn(3) is bonded to one O(7), one O(8), and two equivalent O(3) atoms to form distorted ZnO4 trigonal pyramids that share  a cornercorner with one Zn(4)O5 square pyramid, corners with two equivalent Zn(1)O4 tetrahedra, corners with two equivalent Zn(3)O4 trigonal pyramids, and edges with two equivalent Mg(1)O4 tetrahedra. In the fourth Zn site, Zn(4) is bonded to one O(5), one O(6), one O(8), and two equivalent O(2) atoms to form distorted ZnO5 square pyramids that share corners with two equivalent Zn(4)O5 square pyramids,  a cornercorner with one Zn(1)O4 tetrahedra, corners with two equivalent Mg(1)O4 tetrahedra, and  a cornercorner with one Zn(3)O4 trigonal pyramid. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 3-coordinate geometry to one O(5) and two equivalent O(4) atoms. In the second Sn site, Sn(2) is bonded in a distorted T-shaped geometry to one O(2) and two equivalent O(6) atoms. In the third Sn site, Sn(3) is bonded in a water-like geometry to one O(2) and one O(3) atom. In the fourth Sn site, Sn(4) is bonded in a water-like geometry to one O(1) and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), two equivalent Zn(2), and one Sn(4) atom. In the second O site, O(2) is bonded to two equivalent Zn(4), one Sn(2), and one Sn(3) atom to form OZn2Sn2 tetrahedra that share corners with two equivalent O(2)Zn2Sn2 tetrahedra,  a cornercorner with one O(3)MgZn2Sn trigonal pyramid, and corners with two equivalent O(5)Zn3Sn trigonal pyramids. In the third O site, O(3) is bonded to one Mg(1), two equivalent Zn(3), and one Sn(3) atom to form OMgZn2Sn trigonal pyramids that share  a cornercorner with one O(2)Zn2Sn2 tetrahedra, corners with two equivalent O(7)Zn3Sn tetrahedra, and corners with two equivalent O(3)MgZn2Sn trigonal pyramids. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Zn(1), one Zn(2), and two equivalent Sn(1) atoms. In the fifth O site, O(5) is bonded to one Zn(4), two equivalent Zn(2), and one Sn(1) atom to form distorted OZn3Sn trigonal pyramids that share corners with two equivalent O(2)Zn2Sn2 tetrahedra and corners with two equivalent O(5)Zn3Sn trigonal pyramids. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Zn(1), one Zn(4), and two equivalent Sn(2) atoms. In the seventh O site, O(7) is bonded to one Zn(3), two equivalent Zn(1), and one Sn(4) atom to form OZn3Sn tetrahedra that share corners with two equivalent O(7)Zn3Sn tetrahedra and corners with two equivalent O(3)MgZn2Sn trigonal pyramids. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to two equivalent Mg(1), one Zn(3), and one Zn(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgZn4(SnO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.287
_cell_length_b   9.013
_cell_length_c   9.528
_cell_angle_alpha   93.425
_cell_angle_beta   81.094
_cell_angle_gamma   81.034
_symmetry_Int_Tables_number   1
_cell_volume   274.509
_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  0.980  0.846  0.837  1.0
  Zn  Zn1  1  0.640  0.006  0.288  1.0
  Zn  Zn2  1  0.468  0.996  0.646  1.0
  Zn  Zn3  1  0.388  0.782  0.072  1.0
  Zn  Zn4  1  0.634  0.155  0.933  1.0
  Sn  Sn5  1  0.865  0.279  0.553  1.0
  Sn  Sn6  1  0.989  0.341  0.195  1.0
  Sn  Sn7  1  0.097  0.485  0.827  1.0
  Sn  Sn8  1  0.226  0.692  0.434  1.0
  O  O9  1  0.078  0.839  0.625  1.0
  O  O10  1  0.089  0.313  0.969  1.0
  O  O11  1  0.970  0.685  0.981  1.0
  O  O12  1  0.471  0.125  0.476  1.0
  O  O13  1  0.846  0.136  0.723  1.0
  O  O14  1  0.581  0.177  0.160  1.0
  O  O15  1  0.205  0.872  0.272  1.0
  O  O16  1  0.406  0.946  0.914  1.0
[/CIF]
.