The material described by MgV2Bi2(PbO5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(10), one O(3), one O(6), and one O(7) atom to form distorted MgO4 tetrahedra that share corners with two equivalent V(1)O4 tetrahedra and  an edgeedge with one V(2)O4 tetrahedra. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(4), one O(6), and one O(8) atom to form VO4 tetrahedra that share corners with two equivalent Mg(1)O4 tetrahedra. In the second V site, V(2) is bonded to one O(3), one O(5), one O(7), and one O(9) atom to form VO4 tetrahedra that share  an edgeedge with one Mg(1)O4 tetrahedra. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a distorted pentagonal planar geometry to one O(1), one O(2), one O(3), one O(5), and one O(8) atom. In the second Pb site, Pb(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(4), and one O(5) atom. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(8), and one O(9) atom. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(2), one O(4), one O(6), and one O(7) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Pb(1), one Pb(2), one Bi(1), and one Bi(2) atom to form distorted edge-sharing OBi2Pb2 tetrahedra. In the second O site, O(2) is bonded to one Pb(1), one Pb(2), one Bi(1), and one Bi(2) atom to form edge-sharing OBi2Pb2 tetrahedra. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Mg(1), one V(2), one Pb(1), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one V(1), one Pb(2), and one Bi(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one V(2), one Pb(1), one Pb(2), and one Bi(1) atom. In the sixth O site, O(6) is bonded in a water-like geometry to one Mg(1), one V(1), and one Bi(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Mg(1), one V(2), and one Bi(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one V(1), one Pb(1), and one Bi(1) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one V(2) and one Bi(1) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Mg(1), one V(1), and one Bi(2) atom. is represented by the CIF card [CIF]
data_MgV2Bi2(PbO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.060
_cell_length_b   7.840
_cell_length_c   7.462
_cell_angle_alpha   99.270
_cell_angle_beta   119.558
_cell_angle_gamma   99.064
_symmetry_Int_Tables_number   1
_cell_volume   292.498
_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  0.686  0.591  0.401  1.0
  V  V1  1  0.150  0.618  0.339  1.0
  V  V2  1  0.878  0.368  0.670  1.0
  Bi  Bi3  1  0.597  0.246  0.024  1.0
  Bi  Bi4  1  0.399  0.769  0.951  1.0
  Pb  Pb5  1  0.238  0.129  0.331  1.0
  Pb  Pb6  1  0.800  0.956  0.734  1.0
  O  O7  1  0.267  0.006  0.000  1.0
  O  O8  1  0.743  0.005  0.024  1.0
  O  O9  1  0.624  0.324  0.372  1.0
  O  O10  1  0.334  0.749  0.620  1.0
  O  O11  1  0.654  0.232  0.734  1.0
  O  O12  1  0.819  0.641  0.218  1.0
  O  O13  1  0.927  0.614  0.720  1.0
  O  O14  1  0.061  0.368  0.253  1.0
  O  O15  1  0.125  0.265  0.719  1.0
  O  O16  1  0.388  0.693  0.268  1.0
[/CIF]
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The material described by MgV2Bi2(PbO5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(10), one O(3), one O(6), and one O(7) atom to form distorted MgO4 tetrahedra that share corners with two equivalent V(1)O4 tetrahedra and  an edgeedge with one V(2)O4 tetrahedra. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(4), one O(6), and one O(8) atom to form VO4 tetrahedra that share corners with two equivalent Mg(1)O4 tetrahedra. In the second V site, V(2) is bonded to one O(3), one O(5), one O(7), and one O(9) atom to form VO4 tetrahedra that share  an edgeedge with one Mg(1)O4 tetrahedra. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a distorted pentagonal planar geometry to one O(1), one O(2), one O(3), one O(5), and one O(8) atom. In the second Pb site, Pb(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(4), and one O(5) atom. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(8), and one O(9) atom. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(2), one O(4), one O(6), and one O(7) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Pb(1), one Pb(2), one Bi(1), and one Bi(2) atom to form distorted edge-sharing OBi2Pb2 tetrahedra. In the second O site, O(2) is bonded to one Pb(1), one Pb(2), one Bi(1), and one Bi(2) atom to form edge-sharing OBi2Pb2 tetrahedra. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Mg(1), one V(2), one Pb(1), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one V(1), one Pb(2), and one Bi(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one V(2), one Pb(1), one Pb(2), and one Bi(1) atom. In the sixth O site, O(6) is bonded in a water-like geometry to one Mg(1), one V(1), and one Bi(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Mg(1), one V(2), and one Bi(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one V(1), one Pb(1), and one Bi(1) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one V(2) and one Bi(1) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Mg(1), one V(1), and one Bi(2) atom. is represented by the CIF card [CIF]
data_MgV2Bi2(PbO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.060
_cell_length_b   7.840
_cell_length_c   7.462
_cell_angle_alpha   99.270
_cell_angle_beta   119.558
_cell_angle_gamma   99.064
_symmetry_Int_Tables_number   1
_cell_volume   292.498
_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  0.686  0.591  0.401  1.0
  V  V1  1  0.150  0.618  0.339  1.0
  V  V2  1  0.878  0.368  0.670  1.0
  Bi  Bi3  1  0.597  0.246  0.024  1.0
  Bi  Bi4  1  0.399  0.769  0.951  1.0
  Pb  Pb5  1  0.238  0.129  0.331  1.0
  Pb  Pb6  1  0.800  0.956  0.734  1.0
  O  O7  1  0.267  0.006  0.000  1.0
  O  O8  1  0.743  0.005  0.024  1.0
  O  O9  1  0.624  0.324  0.372  1.0
  O  O10  1  0.334  0.749  0.620  1.0
  O  O11  1  0.654  0.232  0.734  1.0
  O  O12  1  0.819  0.641  0.218  1.0
  O  O13  1  0.927  0.614  0.720  1.0
  O  O14  1  0.061  0.368  0.253  1.0
  O  O15  1  0.125  0.265  0.719  1.0
  O  O16  1  0.388  0.693  0.268  1.0
[/CIF]
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