The material described by MgTi2(Bi2O5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 3-coordinate geometry to one O(2), one O(5), and one O(6) atom. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(10), one O(7), and one O(9) atom to form corner-sharing TiO4 tetrahedra. In the second Ti site, Ti(2) is bonded to one O(10), one O(2), one O(8), and one O(9) atom to form corner-sharing TiO4 tetrahedra. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(4), one O(5), and one O(6) atom. In the second Bi site, Bi(2) is bonded in a 3-coordinate geometry to one O(1), one O(3), and one O(4) atom. In the third Bi site, Bi(3) is bonded in a 6-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. In the fourth Bi site, Bi(4) is bonded in a 5-coordinate geometry to one O(3), one O(5), one O(6), one O(7), and one O(8) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Ti(1), one Bi(1), and one Bi(2) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Mg(1) and one Ti(2) atom. In the third O site, O(3) is bonded to one Bi(1), one Bi(2), one Bi(3), and one Bi(4) atom to form a mixture of distorted corner and edge-sharing OBi4 trigonal pyramids. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Bi(1), one Bi(2), and one Bi(3) atom. In the fifth O site, O(5) is bonded to one Mg(1), one Bi(1), one Bi(3), and one Bi(4) atom to form distorted OMgBi3 tetrahedra that share corners with three equivalent O(3)Bi4 trigonal pyramids and edges with two equivalent O(6)MgBi3 tetrahedra. In the sixth O site, O(6) is bonded to one Mg(1), one Bi(1), one Bi(3), and one Bi(4) atom to form distorted OMgBi3 tetrahedra that share  a cornercorner with one O(3)Bi4 trigonal pyramid, edges with two equivalent O(5)MgBi3 tetrahedra, and  an edgeedge with one O(3)Bi4 trigonal pyramid. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Ti(1), one Bi(3), and one Bi(4) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Ti(2), one Bi(3), and one Bi(4) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Ti(1) and one Ti(2) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Ti(1) and one Ti(2) atom. is represented by the CIF file [CIF]
data_MgTi2(Bi2O5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.196
_cell_length_b   8.643
_cell_length_c   5.887
_cell_angle_alpha   92.561
_cell_angle_beta   91.811
_cell_angle_gamma   78.353
_symmetry_Int_Tables_number   1
_cell_volume   308.376
_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  0.780  0.645  0.273  1.0
  Ti  Ti1  1  0.272  0.021  0.699  1.0
  Ti  Ti2  1  0.601  0.044  0.199  1.0
  Bi  Bi3  1  0.077  0.601  0.795  1.0
  Bi  Bi4  1  0.310  0.658  0.319  1.0
  Bi  Bi5  1  0.646  0.351  0.817  1.0
  Bi  Bi6  1  0.048  0.292  0.322  1.0
  O  O7  1  0.259  0.815  0.686  1.0
  O  O8  1  0.758  0.853  0.154  1.0
  O  O9  1  0.321  0.462  0.550  1.0
  O  O10  1  0.357  0.481  0.010  1.0
  O  O11  1  0.861  0.479  0.024  1.0
  O  O12  1  0.846  0.486  0.525  1.0
  O  O13  1  0.010  0.152  0.623  1.0
  O  O14  1  0.763  0.199  0.156  1.0
  O  O15  1  0.454  0.062  0.475  1.0
  O  O16  1  0.377  0.086  0.979  1.0
[/CIF]
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The material described by MgTi2(Bi2O5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 3-coordinate geometry to one O(2), one O(5), and one O(6) atom. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(10), one O(7), and one O(9) atom to form corner-sharing TiO4 tetrahedra. In the second Ti site, Ti(2) is bonded to one O(10), one O(2), one O(8), and one O(9) atom to form corner-sharing TiO4 tetrahedra. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(4), one O(5), and one O(6) atom. In the second Bi site, Bi(2) is bonded in a 3-coordinate geometry to one O(1), one O(3), and one O(4) atom. In the third Bi site, Bi(3) is bonded in a 6-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. In the fourth Bi site, Bi(4) is bonded in a 5-coordinate geometry to one O(3), one O(5), one O(6), one O(7), and one O(8) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Ti(1), one Bi(1), and one Bi(2) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Mg(1) and one Ti(2) atom. In the third O site, O(3) is bonded to one Bi(1), one Bi(2), one Bi(3), and one Bi(4) atom to form a mixture of distorted corner and edge-sharing OBi4 trigonal pyramids. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Bi(1), one Bi(2), and one Bi(3) atom. In the fifth O site, O(5) is bonded to one Mg(1), one Bi(1), one Bi(3), and one Bi(4) atom to form distorted OMgBi3 tetrahedra that share corners with three equivalent O(3)Bi4 trigonal pyramids and edges with two equivalent O(6)MgBi3 tetrahedra. In the sixth O site, O(6) is bonded to one Mg(1), one Bi(1), one Bi(3), and one Bi(4) atom to form distorted OMgBi3 tetrahedra that share  a cornercorner with one O(3)Bi4 trigonal pyramid, edges with two equivalent O(5)MgBi3 tetrahedra, and  an edgeedge with one O(3)Bi4 trigonal pyramid. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Ti(1), one Bi(3), and one Bi(4) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Ti(2), one Bi(3), and one Bi(4) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Ti(1) and one Ti(2) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Ti(1) and one Ti(2) atom. is represented by the CIF file [CIF]
data_MgTi2(Bi2O5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.196
_cell_length_b   8.643
_cell_length_c   5.887
_cell_angle_alpha   92.561
_cell_angle_beta   91.811
_cell_angle_gamma   78.353
_symmetry_Int_Tables_number   1
_cell_volume   308.376
_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  0.780  0.645  0.273  1.0
  Ti  Ti1  1  0.272  0.021  0.699  1.0
  Ti  Ti2  1  0.601  0.044  0.199  1.0
  Bi  Bi3  1  0.077  0.601  0.795  1.0
  Bi  Bi4  1  0.310  0.658  0.319  1.0
  Bi  Bi5  1  0.646  0.351  0.817  1.0
  Bi  Bi6  1  0.048  0.292  0.322  1.0
  O  O7  1  0.259  0.815  0.686  1.0
  O  O8  1  0.758  0.853  0.154  1.0
  O  O9  1  0.321  0.462  0.550  1.0
  O  O10  1  0.357  0.481  0.010  1.0
  O  O11  1  0.861  0.479  0.024  1.0
  O  O12  1  0.846  0.486  0.525  1.0
  O  O13  1  0.010  0.152  0.623  1.0
  O  O14  1  0.763  0.199  0.156  1.0
  O  O15  1  0.454  0.062  0.475  1.0
  O  O16  1  0.377  0.086  0.979  1.0
[/CIF]
.