The material structure described by K6Mg(SbO4)2 crystallizes in the triclinic P1 space group. There are six inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to one Mg(1), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. In the second K site, K(2) is bonded to one O(2), one O(3), one O(5), and one O(6) atom to form distorted KO4 tetrahedra that share corners with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 13-24°. In the third K site, K(3) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(5), one O(7), and one O(8) atom. In the fourth K site, K(4) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), one O(5), and one O(6) atom. In the fifth K site, K(5) is bonded in a 3-coordinate geometry to one O(1), one O(3), one O(4), and one O(7) atom. In the sixth K site, K(6) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(8) atom. Mg(1) is bonded in a distorted rectangular see-saw-like geometry to one K(1), one O(3), one O(4), one O(6), and one O(7) atom. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form SbO6 octahedra that share corners with two equivalent K(2)O4 tetrahedra. In the second Sb site, Sb(2) is bonded in a distorted trigonal non-coplanar geometry to one O(2), one O(5), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one K(4), one K(5), one K(6), and one Sb(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one K(2), one K(4), one K(6), one Sb(1), and one Sb(2) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to one K(1), one K(2), one K(3), one K(5), one Mg(1), and one Sb(1) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one K(1), one K(3), one K(4), one K(5), one Mg(1), and one Sb(1) atom. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one K(1), one K(2), one K(3), one K(4), one K(6), and one Sb(2) atom. In the sixth O site, O(6) is bonded in a 1-coordinate geometry to one K(1), one K(2), one K(4), one K(6), and one Mg(1) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one K(1), one K(3), one K(5), one K(6), one Mg(1), and one Sb(1) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one K(1), one K(3), one K(6), one Sb(1), and one Sb(2) atom. is represented by the CIF file [CIF]
data_K6Mg(SbO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.384
_cell_length_b   6.661
_cell_length_c   7.936
_cell_angle_alpha   82.385
_cell_angle_beta   91.297
_cell_angle_gamma   103.625
_symmetry_Int_Tables_number   1
_cell_volume   325.064
_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
  K  K0  1  0.681  0.895  0.325  1.0
  K  K1  1  0.334  0.092  0.639  1.0
  K  K2  1  0.282  0.503  0.360  1.0
  K  K3  1  0.866  0.681  0.662  1.0
  K  K4  1  0.203  0.018  0.150  1.0
  K  K5  1  0.786  0.053  0.880  1.0
  Mg  Mg6  1  0.830  0.294  0.412  1.0
  Sb  Sb7  1  0.763  0.490  0.113  1.0
  Sb  Sb8  1  0.341  0.532  0.890  1.0
  O  O9  1  0.975  0.709  0.976  1.0
  O  O10  1  0.587  0.371  0.907  1.0
  O  O11  1  0.546  0.274  0.291  1.0
  O  O12  1  0.885  0.602  0.335  1.0
  O  O13  1  0.435  0.725  0.684  1.0
  O  O14  1  0.949  0.122  0.574  1.0
  O  O15  1  0.935  0.272  0.163  1.0
  O  O16  1  0.520  0.677  0.074  1.0
[/CIF]
.
The material structure described by K6Mg(SbO4)2 crystallizes in the triclinic P1 space group. There are six inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to one Mg(1), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. In the second K site, K(2) is bonded to one O(2), one O(3), one O(5), and one O(6) atom to form distorted KO4 tetrahedra that share corners with two equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 13-24°. In the third K site, K(3) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(5), one O(7), and one O(8) atom. In the fourth K site, K(4) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), one O(5), and one O(6) atom. In the fifth K site, K(5) is bonded in a 3-coordinate geometry to one O(1), one O(3), one O(4), and one O(7) atom. In the sixth K site, K(6) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(8) atom. Mg(1) is bonded in a distorted rectangular see-saw-like geometry to one K(1), one O(3), one O(4), one O(6), and one O(7) atom. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form SbO6 octahedra that share corners with two equivalent K(2)O4 tetrahedra. In the second Sb site, Sb(2) is bonded in a distorted trigonal non-coplanar geometry to one O(2), one O(5), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one K(4), one K(5), one K(6), and one Sb(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one K(2), one K(4), one K(6), one Sb(1), and one Sb(2) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to one K(1), one K(2), one K(3), one K(5), one Mg(1), and one Sb(1) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one K(1), one K(3), one K(4), one K(5), one Mg(1), and one Sb(1) atom. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one K(1), one K(2), one K(3), one K(4), one K(6), and one Sb(2) atom. In the sixth O site, O(6) is bonded in a 1-coordinate geometry to one K(1), one K(2), one K(4), one K(6), and one Mg(1) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one K(1), one K(3), one K(5), one K(6), one Mg(1), and one Sb(1) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one K(1), one K(3), one K(6), one Sb(1), and one Sb(2) atom. is represented by the CIF file [CIF]
data_K6Mg(SbO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.384
_cell_length_b   6.661
_cell_length_c   7.936
_cell_angle_alpha   82.385
_cell_angle_beta   91.297
_cell_angle_gamma   103.625
_symmetry_Int_Tables_number   1
_cell_volume   325.064
_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
  K  K0  1  0.681  0.895  0.325  1.0
  K  K1  1  0.334  0.092  0.639  1.0
  K  K2  1  0.282  0.503  0.360  1.0
  K  K3  1  0.866  0.681  0.662  1.0
  K  K4  1  0.203  0.018  0.150  1.0
  K  K5  1  0.786  0.053  0.880  1.0
  Mg  Mg6  1  0.830  0.294  0.412  1.0
  Sb  Sb7  1  0.763  0.490  0.113  1.0
  Sb  Sb8  1  0.341  0.532  0.890  1.0
  O  O9  1  0.975  0.709  0.976  1.0
  O  O10  1  0.587  0.371  0.907  1.0
  O  O11  1  0.546  0.274  0.291  1.0
  O  O12  1  0.885  0.602  0.335  1.0
  O  O13  1  0.435  0.725  0.684  1.0
  O  O14  1  0.949  0.122  0.574  1.0
  O  O15  1  0.935  0.272  0.163  1.0
  O  O16  1  0.520  0.677  0.074  1.0
[/CIF]
.