The material described by MgZn4(SnO2)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(7), one O(8), and two equivalent O(6) atoms to form distorted MgO4 tetrahedra that share  a cornercorner with one Zn(2)O4 tetrahedra, corners with two equivalent Mg(1)O4 tetrahedra, and corners with two equivalent Zn(4)O4 tetrahedra. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 4-coordinate geometry to one O(4), one O(6), and two equivalent O(7) atoms. In the second Zn site, Zn(2) is bonded to one O(1), one O(8), and two equivalent O(5) atoms to form ZnO4 tetrahedra that share  a cornercorner with one Mg(1)O4 tetrahedra, corners with two equivalent Zn(2)O4 tetrahedra, and corners with two equivalent Zn(4)O4 tetrahedra. In the third Zn site, Zn(3) is bonded in a 3-coordinate geometry to two equivalent O(3) and two equivalent O(8) atoms. In the fourth Zn site, Zn(4) is bonded to one O(5), one O(6), and two equivalent O(2) atoms to form ZnO4 tetrahedra that share corners with two equivalent Mg(1)O4 tetrahedra, corners with two equivalent Zn(2)O4 tetrahedra, and corners with two equivalent Zn(4)O4 tetrahedra. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a distorted T-shaped geometry to one O(5) and two equivalent O(4) atoms. In the second Sn site, Sn(2) is bonded in a distorted L-shaped geometry to one O(2) and one O(3) atom. In the third Sn site, Sn(3) is bonded in a distorted L-shaped geometry to one O(2) and one O(3) atom. In the fourth Sn site, Sn(4) is bonded in a distorted T-shaped geometry to one O(7) and two equivalent O(1) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Zn(2) and two equivalent Sn(4) atoms. 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 and corners with two equivalent O(5)Zn3Sn tetrahedra. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Zn(3), one Sn(2), and one Sn(3) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Zn(1) 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 OZn3Sn tetrahedra that share corners with two equivalent O(8)MgZn3 tetrahedra, corners with two equivalent O(2)Zn2Sn2 tetrahedra, and corners with two equivalent O(5)Zn3Sn tetrahedra. In the sixth O site, O(6) is bonded in a distorted see-saw-like geometry to two equivalent Mg(1), one Zn(1), and one Zn(4) atom. In the seventh O site, O(7) is bonded to one Mg(1), two equivalent Zn(1), and one Sn(4) atom to form distorted OMgZn2Sn tetrahedra that share  a cornercorner with one O(8)MgZn3 tetrahedra and corners with two equivalent O(7)MgZn2Sn tetrahedra. In the eighth O site, O(8) is bonded to one Mg(1), one Zn(2), and two equivalent Zn(3) atoms to form OMgZn3 tetrahedra that share  a cornercorner with one O(7)MgZn2Sn tetrahedra, corners with two equivalent O(8)MgZn3 tetrahedra, and corners with two equivalent O(5)Zn3Sn tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgZn4(SnO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.271
_cell_length_b   10.325
_cell_length_c   9.135
_cell_angle_alpha   83.359
_cell_angle_beta   80.657
_cell_angle_gamma   86.743
_symmetry_Int_Tables_number   1
_cell_volume   302.197
_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  0.138  0.972  0.103  1.0
  Zn  Zn1  1  0.520  0.032  0.346  1.0
  Zn  Zn2  1  0.323  0.996  0.749  1.0
  Zn  Zn3  1  0.700  0.744  0.951  1.0
  Zn  Zn4  1  0.676  0.213  0.947  1.0
  Sn  Sn5  1  0.867  0.266  0.564  1.0
  Sn  Sn6  1  0.025  0.434  0.162  1.0
  Sn  Sn7  1  0.196  0.500  0.783  1.0
  Sn  Sn8  1  0.999  0.771  0.506  1.0
  O  O9  1  0.441  0.875  0.593  1.0
  O  O10  1  0.150  0.329  0.958  1.0
  O  O11  1  0.080  0.598  0.990  1.0
  O  O12  1  0.426  0.170  0.473  1.0
  O  O13  1  0.799  0.115  0.758  1.0
  O  O14  1  0.617  0.074  0.111  1.0
  O  O15  1  0.050  0.919  0.324  1.0
  O  O16  1  0.228  0.863  0.937  1.0
[/CIF]
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The material described by MgZn4(SnO2)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(7), one O(8), and two equivalent O(6) atoms to form distorted MgO4 tetrahedra that share  a cornercorner with one Zn(2)O4 tetrahedra, corners with two equivalent Mg(1)O4 tetrahedra, and corners with two equivalent Zn(4)O4 tetrahedra. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 4-coordinate geometry to one O(4), one O(6), and two equivalent O(7) atoms. In the second Zn site, Zn(2) is bonded to one O(1), one O(8), and two equivalent O(5) atoms to form ZnO4 tetrahedra that share  a cornercorner with one Mg(1)O4 tetrahedra, corners with two equivalent Zn(2)O4 tetrahedra, and corners with two equivalent Zn(4)O4 tetrahedra. In the third Zn site, Zn(3) is bonded in a 3-coordinate geometry to two equivalent O(3) and two equivalent O(8) atoms. In the fourth Zn site, Zn(4) is bonded to one O(5), one O(6), and two equivalent O(2) atoms to form ZnO4 tetrahedra that share corners with two equivalent Mg(1)O4 tetrahedra, corners with two equivalent Zn(2)O4 tetrahedra, and corners with two equivalent Zn(4)O4 tetrahedra. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a distorted T-shaped geometry to one O(5) and two equivalent O(4) atoms. In the second Sn site, Sn(2) is bonded in a distorted L-shaped geometry to one O(2) and one O(3) atom. In the third Sn site, Sn(3) is bonded in a distorted L-shaped geometry to one O(2) and one O(3) atom. In the fourth Sn site, Sn(4) is bonded in a distorted T-shaped geometry to one O(7) and two equivalent O(1) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Zn(2) and two equivalent Sn(4) atoms. 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 and corners with two equivalent O(5)Zn3Sn tetrahedra. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Zn(3), one Sn(2), and one Sn(3) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Zn(1) 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 OZn3Sn tetrahedra that share corners with two equivalent O(8)MgZn3 tetrahedra, corners with two equivalent O(2)Zn2Sn2 tetrahedra, and corners with two equivalent O(5)Zn3Sn tetrahedra. In the sixth O site, O(6) is bonded in a distorted see-saw-like geometry to two equivalent Mg(1), one Zn(1), and one Zn(4) atom. In the seventh O site, O(7) is bonded to one Mg(1), two equivalent Zn(1), and one Sn(4) atom to form distorted OMgZn2Sn tetrahedra that share  a cornercorner with one O(8)MgZn3 tetrahedra and corners with two equivalent O(7)MgZn2Sn tetrahedra. In the eighth O site, O(8) is bonded to one Mg(1), one Zn(2), and two equivalent Zn(3) atoms to form OMgZn3 tetrahedra that share  a cornercorner with one O(7)MgZn2Sn tetrahedra, corners with two equivalent O(8)MgZn3 tetrahedra, and corners with two equivalent O(5)Zn3Sn tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgZn4(SnO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.271
_cell_length_b   10.325
_cell_length_c   9.135
_cell_angle_alpha   83.359
_cell_angle_beta   80.657
_cell_angle_gamma   86.743
_symmetry_Int_Tables_number   1
_cell_volume   302.197
_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  0.138  0.972  0.103  1.0
  Zn  Zn1  1  0.520  0.032  0.346  1.0
  Zn  Zn2  1  0.323  0.996  0.749  1.0
  Zn  Zn3  1  0.700  0.744  0.951  1.0
  Zn  Zn4  1  0.676  0.213  0.947  1.0
  Sn  Sn5  1  0.867  0.266  0.564  1.0
  Sn  Sn6  1  0.025  0.434  0.162  1.0
  Sn  Sn7  1  0.196  0.500  0.783  1.0
  Sn  Sn8  1  0.999  0.771  0.506  1.0
  O  O9  1  0.441  0.875  0.593  1.0
  O  O10  1  0.150  0.329  0.958  1.0
  O  O11  1  0.080  0.598  0.990  1.0
  O  O12  1  0.426  0.170  0.473  1.0
  O  O13  1  0.799  0.115  0.758  1.0
  O  O14  1  0.617  0.074  0.111  1.0
  O  O15  1  0.050  0.919  0.324  1.0
  O  O16  1  0.228  0.863  0.937  1.0
[/CIF]
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