The material described by MgSb2O4 crystallizes in the triclinic P1 space group. There are six inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(1), one O(17), one O(3), and one O(4) atom to form MgO4 tetrahedra that share  a cornercorner with one Mg(6)O6 octahedra and corners with two equivalent Mg(3)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 60°. In the second Mg site, Mg(2) is bonded in a 5-coordinate geometry to one O(11), one O(5), one O(6), one O(8), and one O(9) atom. In the third Mg site, Mg(3) is bonded to one O(1), one O(10), one O(12), one O(2), and one O(3) atom to form distorted corner-sharing MgO5 trigonal bipyramids. In the fourth Mg site, Mg(4) is bonded in a 5-coordinate geometry to one O(13), one O(14), one O(15), one O(19), and one O(20) atom. In the fifth Mg site, Mg(5) is bonded in a 4-coordinate geometry to one O(15), one O(20), one O(5), and one O(9) atom. In the sixth Mg site, Mg(6) is bonded to one O(13), one O(16), one O(17), one O(22), one O(23), and one O(24) atom to form distorted corner-sharing MgO6 octahedra. There are twelve inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 3-coordinate geometry to one O(10), one O(12), and one O(4) atom. In the second Sb site, Sb(2) is bonded in a distorted T-shaped geometry to one O(11), one O(2), and one O(5) atom. In the third Sb site, Sb(3) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(21), and one O(3) atom. In the fourth Sb site, Sb(4) is bonded in a distorted rectangular see-saw-like geometry to one O(10), one O(2), one O(6), and one O(8) atom. In the fifth Sb site, Sb(5) is bonded in a distorted T-shaped geometry to one O(14), one O(20), and one O(7) atom. In the sixth Sb site, Sb(6) is bonded in a distorted T-shaped geometry to one O(13), one O(16), and one O(7) atom. In the seventh Sb site, Sb(7) is bonded in a distorted T-shaped geometry to one O(11), one O(18), and one O(9) atom. In the eighth Sb site, Sb(8) is bonded in a 3-coordinate geometry to one O(13), one O(19), one O(23), and one O(24) atom. In the ninth Sb site, Sb(9) is bonded in a distorted T-shaped geometry to one O(12), one O(18), and one O(8) atom. In the tenth Sb site, Sb(10) is bonded in a 3-coordinate geometry to one O(16), one O(17), and one O(19) atom. In the eleventh Sb site, Sb(11) is bonded in a distorted T-shaped geometry to one O(14), one O(15), and one O(23) atom. In the twelfth Sb site, Sb(12) is bonded in a distorted T-shaped geometry to one O(21), one O(22), and one O(24) atom. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mg(1), one Mg(3), and one Sb(3) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(3), one Sb(2), and one Sb(4) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mg(1), one Mg(3), and one Sb(3) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Mg(1) and one Sb(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mg(2), one Mg(5), and one Sb(2) atom. In the sixth O site, O(6) is bonded in a water-like geometry to one Mg(2) and one Sb(4) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Sb(5) and one Sb(6) atom. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one Mg(2), one Sb(4), and one Sb(9) atom. In the ninth O site, O(9) is bonded in a T-shaped geometry to one Mg(2), one Mg(5), and one Sb(7) atom. In the tenth O site, O(10) is bonded in a trigonal non-coplanar geometry to one Mg(3), one Sb(1), and one Sb(4) atom. In the eleventh O site, O(11) is bonded in a distorted T-shaped geometry to one Mg(2), one Sb(2), and one Sb(7) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Mg(3), one Sb(1), and one Sb(9) atom. In the thirteenth O site, O(13) is bonded in a distorted rectangular see-saw-like geometry to one Mg(4), one Mg(6), one Sb(6), and one Sb(8) atom. In the fourteenth O site, O(14) is bonded in a distorted T-shaped geometry to one Mg(4), one Sb(11), and one Sb(5) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Mg(4), one Mg(5), and one Sb(11) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Mg(6), one Sb(10), and one Sb(6) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Mg(1), one Mg(6), and one Sb(10) atom. In the eighteenth O site, O(18) is bonded in a bent 120 degrees geometry to one Sb(7) and one Sb(9) atom. In the nineteenth O site, O(19) is bonded in a trigonal non-coplanar geometry to one Mg(4), one Sb(10), and one Sb(8) atom. In the twentieth O site, O(20) is bonded in a trigonal non-coplanar geometry to one Mg(4), one Mg(5), and one Sb(5) atom. In the twenty-first O site, O(21) is bonded in a distorted bent 150 degrees geometry to one Sb(12) and one Sb(3) atom. In the twenty-second O site, O(22) is bonded in a distorted bent 150 degrees geometry to one Mg(6) and one Sb(12) atom. In the twenty-third O site, O(23) is bonded in a trigonal planar geometry to one Mg(6), one Sb(11), and one Sb(8) atom. In the twenty-fourth O site, O(24) is bonded in a distorted trigonal planar geometry to one Mg(6), one Sb(12), and one Sb(8) atom. is represented by the CIF card [CIF]
data_Mg(SbO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.513
_cell_length_b   7.127
_cell_length_c   16.952
_cell_angle_alpha   89.149
_cell_angle_beta   89.254
_cell_angle_gamma   63.035
_symmetry_Int_Tables_number   1
_cell_volume   701.221
_cell_formula_units_Z   6
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  0.670  0.160  0.029  1.0
  Mg  Mg1  1  0.440  0.735  0.355  1.0
  Mg  Mg2  1  0.080  0.181  0.167  1.0
  Mg  Mg3  1  0.707  0.228  0.664  1.0
  Mg  Mg4  1  0.564  0.491  0.509  1.0
  Mg  Mg5  1  0.801  0.892  0.829  1.0
  Sb  Sb6  1  0.062  0.752  0.150  1.0
  Sb  Sb7  1  0.037  0.414  0.362  1.0
  Sb  Sb8  1  0.088  0.353  0.002  1.0
  Sb  Sb9  1  0.602  0.676  0.186  1.0
  Sb  Sb10  1  0.513  0.005  0.539  1.0
  Sb  Sb11  1  0.299  0.898  0.727  1.0
  Sb  Sb12  1  0.019  0.995  0.468  1.0
  Sb  Sb13  1  0.798  0.429  0.828  1.0
  Sb  Sb14  1  0.649  0.117  0.297  1.0
  Sb  Sb15  1  0.356  0.320  0.834  1.0
  Sb  Sb16  1  0.975  0.568  0.638  1.0
  Sb  Sb17  1  0.310  0.781  0.952  1.0
  O  O18  1  0.342  0.258  0.079  1.0
  O  O19  1  0.964  0.394  0.252  1.0
  O  O20  1  0.872  0.298  0.071  1.0
  O  O21  1  0.907  0.871  0.050  1.0
  O  O22  1  0.729  0.489  0.408  1.0
  O  O23  1  0.427  0.586  0.257  1.0
  O  O24  1  0.277  0.011  0.615  1.0
  O  O25  1  0.566  0.882  0.275  1.0
  O  O26  1  0.286  0.717  0.459  1.0
  O  O27  1  0.288  0.878  0.134  1.0
  O  O28  1  0.173  0.093  0.384  1.0
  O  O29  1  0.892  0.025  0.214  1.0
  O  O30  1  0.966  0.090  0.741  1.0
  O  O31  1  0.795  0.876  0.609  1.0
  O  O32  1  0.751  0.473  0.604  1.0
  O  O33  1  0.482  0.064  0.762  1.0
  O  O34  1  0.632  0.185  0.904  1.0
  O  O35  1  0.833  0.936  0.388  1.0
  O  O36  1  0.541  0.422  0.762  1.0
  O  O37  1  0.503  0.275  0.566  1.0
  O  O38  1  0.214  0.086  0.936  1.0
  O  O39  1  0.129  0.755  0.866  1.0
  O  O40  1  0.861  0.626  0.750  1.0
  O  O41  1  0.601  0.716  0.879  1.0
[/CIF]
.
The material described by MgSb2O4 crystallizes in the triclinic P1 space group. There are six inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(1), one O(17), one O(3), and one O(4) atom to form MgO4 tetrahedra that share  a cornercorner with one Mg(6)O6 octahedra and corners with two equivalent Mg(3)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 60°. In the second Mg site, Mg(2) is bonded in a 5-coordinate geometry to one O(11), one O(5), one O(6), one O(8), and one O(9) atom. In the third Mg site, Mg(3) is bonded to one O(1), one O(10), one O(12), one O(2), and one O(3) atom to form distorted corner-sharing MgO5 trigonal bipyramids. In the fourth Mg site, Mg(4) is bonded in a 5-coordinate geometry to one O(13), one O(14), one O(15), one O(19), and one O(20) atom. In the fifth Mg site, Mg(5) is bonded in a 4-coordinate geometry to one O(15), one O(20), one O(5), and one O(9) atom. In the sixth Mg site, Mg(6) is bonded to one O(13), one O(16), one O(17), one O(22), one O(23), and one O(24) atom to form distorted corner-sharing MgO6 octahedra. There are twelve inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 3-coordinate geometry to one O(10), one O(12), and one O(4) atom. In the second Sb site, Sb(2) is bonded in a distorted T-shaped geometry to one O(11), one O(2), and one O(5) atom. In the third Sb site, Sb(3) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(21), and one O(3) atom. In the fourth Sb site, Sb(4) is bonded in a distorted rectangular see-saw-like geometry to one O(10), one O(2), one O(6), and one O(8) atom. In the fifth Sb site, Sb(5) is bonded in a distorted T-shaped geometry to one O(14), one O(20), and one O(7) atom. In the sixth Sb site, Sb(6) is bonded in a distorted T-shaped geometry to one O(13), one O(16), and one O(7) atom. In the seventh Sb site, Sb(7) is bonded in a distorted T-shaped geometry to one O(11), one O(18), and one O(9) atom. In the eighth Sb site, Sb(8) is bonded in a 3-coordinate geometry to one O(13), one O(19), one O(23), and one O(24) atom. In the ninth Sb site, Sb(9) is bonded in a distorted T-shaped geometry to one O(12), one O(18), and one O(8) atom. In the tenth Sb site, Sb(10) is bonded in a 3-coordinate geometry to one O(16), one O(17), and one O(19) atom. In the eleventh Sb site, Sb(11) is bonded in a distorted T-shaped geometry to one O(14), one O(15), and one O(23) atom. In the twelfth Sb site, Sb(12) is bonded in a distorted T-shaped geometry to one O(21), one O(22), and one O(24) atom. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mg(1), one Mg(3), and one Sb(3) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(3), one Sb(2), and one Sb(4) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mg(1), one Mg(3), and one Sb(3) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Mg(1) and one Sb(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mg(2), one Mg(5), and one Sb(2) atom. In the sixth O site, O(6) is bonded in a water-like geometry to one Mg(2) and one Sb(4) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Sb(5) and one Sb(6) atom. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one Mg(2), one Sb(4), and one Sb(9) atom. In the ninth O site, O(9) is bonded in a T-shaped geometry to one Mg(2), one Mg(5), and one Sb(7) atom. In the tenth O site, O(10) is bonded in a trigonal non-coplanar geometry to one Mg(3), one Sb(1), and one Sb(4) atom. In the eleventh O site, O(11) is bonded in a distorted T-shaped geometry to one Mg(2), one Sb(2), and one Sb(7) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Mg(3), one Sb(1), and one Sb(9) atom. In the thirteenth O site, O(13) is bonded in a distorted rectangular see-saw-like geometry to one Mg(4), one Mg(6), one Sb(6), and one Sb(8) atom. In the fourteenth O site, O(14) is bonded in a distorted T-shaped geometry to one Mg(4), one Sb(11), and one Sb(5) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Mg(4), one Mg(5), and one Sb(11) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Mg(6), one Sb(10), and one Sb(6) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Mg(1), one Mg(6), and one Sb(10) atom. In the eighteenth O site, O(18) is bonded in a bent 120 degrees geometry to one Sb(7) and one Sb(9) atom. In the nineteenth O site, O(19) is bonded in a trigonal non-coplanar geometry to one Mg(4), one Sb(10), and one Sb(8) atom. In the twentieth O site, O(20) is bonded in a trigonal non-coplanar geometry to one Mg(4), one Mg(5), and one Sb(5) atom. In the twenty-first O site, O(21) is bonded in a distorted bent 150 degrees geometry to one Sb(12) and one Sb(3) atom. In the twenty-second O site, O(22) is bonded in a distorted bent 150 degrees geometry to one Mg(6) and one Sb(12) atom. In the twenty-third O site, O(23) is bonded in a trigonal planar geometry to one Mg(6), one Sb(11), and one Sb(8) atom. In the twenty-fourth O site, O(24) is bonded in a distorted trigonal planar geometry to one Mg(6), one Sb(12), and one Sb(8) atom. is represented by the CIF card [CIF]
data_Mg(SbO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.513
_cell_length_b   7.127
_cell_length_c   16.952
_cell_angle_alpha   89.149
_cell_angle_beta   89.254
_cell_angle_gamma   63.035
_symmetry_Int_Tables_number   1
_cell_volume   701.221
_cell_formula_units_Z   6
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  0.670  0.160  0.029  1.0
  Mg  Mg1  1  0.440  0.735  0.355  1.0
  Mg  Mg2  1  0.080  0.181  0.167  1.0
  Mg  Mg3  1  0.707  0.228  0.664  1.0
  Mg  Mg4  1  0.564  0.491  0.509  1.0
  Mg  Mg5  1  0.801  0.892  0.829  1.0
  Sb  Sb6  1  0.062  0.752  0.150  1.0
  Sb  Sb7  1  0.037  0.414  0.362  1.0
  Sb  Sb8  1  0.088  0.353  0.002  1.0
  Sb  Sb9  1  0.602  0.676  0.186  1.0
  Sb  Sb10  1  0.513  0.005  0.539  1.0
  Sb  Sb11  1  0.299  0.898  0.727  1.0
  Sb  Sb12  1  0.019  0.995  0.468  1.0
  Sb  Sb13  1  0.798  0.429  0.828  1.0
  Sb  Sb14  1  0.649  0.117  0.297  1.0
  Sb  Sb15  1  0.356  0.320  0.834  1.0
  Sb  Sb16  1  0.975  0.568  0.638  1.0
  Sb  Sb17  1  0.310  0.781  0.952  1.0
  O  O18  1  0.342  0.258  0.079  1.0
  O  O19  1  0.964  0.394  0.252  1.0
  O  O20  1  0.872  0.298  0.071  1.0
  O  O21  1  0.907  0.871  0.050  1.0
  O  O22  1  0.729  0.489  0.408  1.0
  O  O23  1  0.427  0.586  0.257  1.0
  O  O24  1  0.277  0.011  0.615  1.0
  O  O25  1  0.566  0.882  0.275  1.0
  O  O26  1  0.286  0.717  0.459  1.0
  O  O27  1  0.288  0.878  0.134  1.0
  O  O28  1  0.173  0.093  0.384  1.0
  O  O29  1  0.892  0.025  0.214  1.0
  O  O30  1  0.966  0.090  0.741  1.0
  O  O31  1  0.795  0.876  0.609  1.0
  O  O32  1  0.751  0.473  0.604  1.0
  O  O33  1  0.482  0.064  0.762  1.0
  O  O34  1  0.632  0.185  0.904  1.0
  O  O35  1  0.833  0.936  0.388  1.0
  O  O36  1  0.541  0.422  0.762  1.0
  O  O37  1  0.503  0.275  0.566  1.0
  O  O38  1  0.214  0.086  0.936  1.0
  O  O39  1  0.129  0.755  0.866  1.0
  O  O40  1  0.861  0.626  0.750  1.0
  O  O41  1  0.601  0.716  0.879  1.0
[/CIF]
.