The compound described by MgZn2(BiO3)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 6-coordinate geometry to one O(10), one O(12), one O(2), one O(4), one O(5), and one O(7) atom. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(1), one O(11), one O(8), and one O(9) atom to form ZnO4 tetrahedra that share corners with two equivalent Bi(1)O6 octahedra, corners with two equivalent Bi(2)O6 octahedra, corners with two equivalent Bi(3)O6 octahedra, and corners with two equivalent Bi(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 62-72°. In the second Zn site, Zn(2) is bonded to one O(10), one O(2), one O(3), one O(6), and one O(7) atom to form distorted ZnO5 trigonal bipyramids that share  a cornercorner with one Bi(1)O6 octahedra,  a cornercorner with one Bi(4)O6 octahedra, corners with two equivalent Bi(2)O6 octahedra, corners with two equivalent Bi(3)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra, and  an edgeedge with one Bi(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 64-74°. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(10), one O(11), one O(3), one O(4), one O(7), and one O(8) atom to form BiO6 octahedra that share corners with two equivalent Bi(4)O6 octahedra, corners with four equivalent Bi(2)O6 octahedra, corners with two equivalent Zn(1)O4 tetrahedra,  a cornercorner with one Zn(2)O5 trigonal bipyramid, and  an edgeedge with one Zn(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 38-51°. In the second Bi site, Bi(2) is bonded to one O(12), one O(3), one O(4), one O(7), one O(8), and one O(9) atom to form BiO6 octahedra that share corners with two equivalent Bi(3)O6 octahedra, corners with four equivalent Bi(1)O6 octahedra, corners with two equivalent Zn(1)O4 tetrahedra, and corners with two equivalent Zn(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 38-51°. In the third Bi site, Bi(3) is bonded to one O(1), one O(12), one O(2), one O(5), one O(6), and one O(9) atom to form BiO6 octahedra that share corners with two equivalent Bi(2)O6 octahedra, corners with four equivalent Bi(4)O6 octahedra, corners with two equivalent Zn(1)O4 tetrahedra, and corners with two equivalent Zn(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 42-52°. In the fourth Bi site, Bi(4) is bonded to one O(1), one O(10), one O(11), one O(2), one O(5), and one O(6) atom to form BiO6 octahedra that share corners with two equivalent Bi(1)O6 octahedra, corners with four equivalent Bi(3)O6 octahedra, corners with two equivalent Zn(1)O4 tetrahedra,  a cornercorner with one Zn(2)O5 trigonal bipyramid, and  an edgeedge with one Zn(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 42-52°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Zn(1), one Bi(3), and one Bi(4) atom. In the second O site, O(2) is bonded to one Mg(1), one Zn(2), one Bi(3), and one Bi(4) atom to form a mixture of corner and edge-sharing OMgZnBi2 tetrahedra. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Zn(2), one Bi(1), and one Bi(2) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Mg(1), one Bi(1), and one Bi(2) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Mg(1), one Bi(3), and one Bi(4) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Zn(2), one Bi(3), and one Bi(4) atom. In the seventh O site, O(7) is bonded to one Mg(1), one Zn(2), one Bi(1), and one Bi(2) atom to form a mixture of corner and edge-sharing OMgZnBi2 trigonal pyramids. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Zn(1), one Bi(1), and one Bi(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Zn(1), one Bi(2), and one Bi(3) atom. In the tenth O site, O(10) is bonded to one Mg(1), one Zn(2), one Bi(1), and one Bi(4) atom to form a mixture of distorted corner and edge-sharing OMgZnBi2 tetrahedra. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Zn(1), one Bi(1), and one Bi(4) atom. In the twelfth O site, O(12) is bonded in a trigonal planar geometry to one Mg(1), one Bi(2), and one Bi(3) atom. is represented by the CIF file [CIF]
data_MgZn2(BiO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.566
_cell_length_b   5.835
_cell_length_c   8.213
_cell_angle_alpha   88.814
_cell_angle_beta   91.348
_cell_angle_gamma   90.412
_symmetry_Int_Tables_number   1
_cell_volume   266.591
_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  0.463  0.425  0.750  1.0
  Zn  Zn1  1  0.485  0.498  0.246  1.0
  Zn  Zn2  1  0.962  0.025  0.749  1.0
  Bi  Bi3  1  0.505  0.976  0.996  1.0
  Bi  Bi4  1  0.991  0.499  0.999  1.0
  Bi  Bi5  1  0.989  0.514  0.508  1.0
  Bi  Bi6  1  0.492  0.988  0.491  1.0
  O  O7  1  0.663  0.351  0.432  1.0
  O  O8  1  0.179  0.217  0.598  1.0
  O  O9  1  0.868  0.848  0.981  1.0
  O  O10  1  0.323  0.664  0.915  1.0
  O  O11  1  0.334  0.656  0.573  1.0
  O  O12  1  0.865  0.856  0.528  1.0
  O  O13  1  0.195  0.200  0.921  1.0
  O  O14  1  0.652  0.329  0.067  1.0
  O  O15  1  0.128  0.470  0.250  1.0
  O  O16  1  0.596  0.084  0.753  1.0
  O  O17  1  0.485  0.843  0.236  1.0
  O  O18  1  0.835  0.487  0.756  1.0
[/CIF]
.
The compound described by MgZn2(BiO3)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 6-coordinate geometry to one O(10), one O(12), one O(2), one O(4), one O(5), and one O(7) atom. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(1), one O(11), one O(8), and one O(9) atom to form ZnO4 tetrahedra that share corners with two equivalent Bi(1)O6 octahedra, corners with two equivalent Bi(2)O6 octahedra, corners with two equivalent Bi(3)O6 octahedra, and corners with two equivalent Bi(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 62-72°. In the second Zn site, Zn(2) is bonded to one O(10), one O(2), one O(3), one O(6), and one O(7) atom to form distorted ZnO5 trigonal bipyramids that share  a cornercorner with one Bi(1)O6 octahedra,  a cornercorner with one Bi(4)O6 octahedra, corners with two equivalent Bi(2)O6 octahedra, corners with two equivalent Bi(3)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra, and  an edgeedge with one Bi(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 64-74°. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(10), one O(11), one O(3), one O(4), one O(7), and one O(8) atom to form BiO6 octahedra that share corners with two equivalent Bi(4)O6 octahedra, corners with four equivalent Bi(2)O6 octahedra, corners with two equivalent Zn(1)O4 tetrahedra,  a cornercorner with one Zn(2)O5 trigonal bipyramid, and  an edgeedge with one Zn(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 38-51°. In the second Bi site, Bi(2) is bonded to one O(12), one O(3), one O(4), one O(7), one O(8), and one O(9) atom to form BiO6 octahedra that share corners with two equivalent Bi(3)O6 octahedra, corners with four equivalent Bi(1)O6 octahedra, corners with two equivalent Zn(1)O4 tetrahedra, and corners with two equivalent Zn(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 38-51°. In the third Bi site, Bi(3) is bonded to one O(1), one O(12), one O(2), one O(5), one O(6), and one O(9) atom to form BiO6 octahedra that share corners with two equivalent Bi(2)O6 octahedra, corners with four equivalent Bi(4)O6 octahedra, corners with two equivalent Zn(1)O4 tetrahedra, and corners with two equivalent Zn(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 42-52°. In the fourth Bi site, Bi(4) is bonded to one O(1), one O(10), one O(11), one O(2), one O(5), and one O(6) atom to form BiO6 octahedra that share corners with two equivalent Bi(1)O6 octahedra, corners with four equivalent Bi(3)O6 octahedra, corners with two equivalent Zn(1)O4 tetrahedra,  a cornercorner with one Zn(2)O5 trigonal bipyramid, and  an edgeedge with one Zn(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 42-52°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Zn(1), one Bi(3), and one Bi(4) atom. In the second O site, O(2) is bonded to one Mg(1), one Zn(2), one Bi(3), and one Bi(4) atom to form a mixture of corner and edge-sharing OMgZnBi2 tetrahedra. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Zn(2), one Bi(1), and one Bi(2) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Mg(1), one Bi(1), and one Bi(2) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Mg(1), one Bi(3), and one Bi(4) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Zn(2), one Bi(3), and one Bi(4) atom. In the seventh O site, O(7) is bonded to one Mg(1), one Zn(2), one Bi(1), and one Bi(2) atom to form a mixture of corner and edge-sharing OMgZnBi2 trigonal pyramids. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Zn(1), one Bi(1), and one Bi(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Zn(1), one Bi(2), and one Bi(3) atom. In the tenth O site, O(10) is bonded to one Mg(1), one Zn(2), one Bi(1), and one Bi(4) atom to form a mixture of distorted corner and edge-sharing OMgZnBi2 tetrahedra. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Zn(1), one Bi(1), and one Bi(4) atom. In the twelfth O site, O(12) is bonded in a trigonal planar geometry to one Mg(1), one Bi(2), and one Bi(3) atom. is represented by the CIF file [CIF]
data_MgZn2(BiO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.566
_cell_length_b   5.835
_cell_length_c   8.213
_cell_angle_alpha   88.814
_cell_angle_beta   91.348
_cell_angle_gamma   90.412
_symmetry_Int_Tables_number   1
_cell_volume   266.591
_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  0.463  0.425  0.750  1.0
  Zn  Zn1  1  0.485  0.498  0.246  1.0
  Zn  Zn2  1  0.962  0.025  0.749  1.0
  Bi  Bi3  1  0.505  0.976  0.996  1.0
  Bi  Bi4  1  0.991  0.499  0.999  1.0
  Bi  Bi5  1  0.989  0.514  0.508  1.0
  Bi  Bi6  1  0.492  0.988  0.491  1.0
  O  O7  1  0.663  0.351  0.432  1.0
  O  O8  1  0.179  0.217  0.598  1.0
  O  O9  1  0.868  0.848  0.981  1.0
  O  O10  1  0.323  0.664  0.915  1.0
  O  O11  1  0.334  0.656  0.573  1.0
  O  O12  1  0.865  0.856  0.528  1.0
  O  O13  1  0.195  0.200  0.921  1.0
  O  O14  1  0.652  0.329  0.067  1.0
  O  O15  1  0.128  0.470  0.250  1.0
  O  O16  1  0.596  0.084  0.753  1.0
  O  O17  1  0.485  0.843  0.236  1.0
  O  O18  1  0.835  0.487  0.756  1.0
[/CIF]
.