The structure described by MgV2Bi4O11 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(3), one O(6), one O(7), and one O(9) atom to form MgO5 trigonal bipyramids that share  a cornercorner with one Bi(3)O5 square pyramid, corners with two equivalent Bi(2)O5 square pyramids,  an edgeedge with one Bi(4)O6 pentagonal pyramid,  an edgeedge with one Bi(3)O5 square pyramid, and  an edgeedge with one V(1)O4 trigonal pyramid. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(3), one O(5), one O(8), and one O(9) atom to form distorted VO4 trigonal pyramids that share  a cornercorner with one Bi(2)O5 square pyramid,  a cornercorner with one Bi(3)O5 square pyramid,  a cornercorner with one V(2)O4 tetrahedra,  an edgeedge with one Bi(4)O6 pentagonal pyramid, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. In the second V site, V(2) is bonded to one O(10), one O(11), one O(4), and one O(8) atom to form VO4 tetrahedra that share  a cornercorner with one Bi(4)O6 pentagonal pyramid,  a cornercorner with one Bi(2)O5 square pyramid,  a cornercorner with one Bi(3)O5 square pyramid,  a cornercorner with one V(1)O4 trigonal pyramid, and  an edgeedge with one Bi(4)O6 pentagonal pyramid. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a distorted see-saw-like geometry to one O(1), one O(2), one O(7), and one O(9) atom. In the second Bi site, Bi(2) is bonded to one O(1), one O(10), one O(2), one O(5), and one O(6) atom to form distorted BiO5 square pyramids that share  a cornercorner with one Bi(4)O6 pentagonal pyramid, corners with two equivalent Bi(3)O5 square pyramids,  a cornercorner with one V(2)O4 tetrahedra, corners with two equivalent Mg(1)O5 trigonal bipyramids,  a cornercorner with one V(1)O4 trigonal pyramid, and  an edgeedge with one Bi(4)O6 pentagonal pyramid. In the third Bi site, Bi(3) is bonded to one O(1), one O(4), one O(6), one O(7), and one O(9) atom to form distorted BiO5 square pyramids that share corners with two equivalent Bi(4)O6 pentagonal pyramids, corners with two equivalent Bi(2)O5 square pyramids,  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid,  a cornercorner with one V(1)O4 trigonal pyramid, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. In the fourth Bi site, Bi(4) is bonded to one O(10), one O(11), one O(5), one O(6), one O(7), and one O(8) atom to form distorted BiO6 pentagonal pyramids that share  a cornercorner with one Bi(2)O5 square pyramid, corners with two equivalent Bi(3)O5 square pyramids,  a cornercorner with one V(2)O4 tetrahedra,  an edgeedge with one Bi(2)O5 square pyramid,  an edgeedge with one V(2)O4 tetrahedra,  an edgeedge with one Mg(1)O5 trigonal bipyramid, and  an edgeedge with one V(1)O4 trigonal pyramid. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Bi(1), one Bi(2), and one Bi(3) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mg(1), one Bi(1), and one Bi(2) atom. In the third O site, O(3) is bonded in an L-shaped geometry to one Mg(1) and one V(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one V(2) and one Bi(3) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one V(1), one Bi(2), and one Bi(4) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Mg(1), one Bi(2), one Bi(3), and one Bi(4) atom. In the seventh O site, O(7) is bonded to one Mg(1), one Bi(1), one Bi(3), and one Bi(4) atom to form distorted corner-sharing OMgBi3 trigonal pyramids. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one V(1), one V(2), and one Bi(4) atom. In the ninth O site, O(9) is bonded to one Mg(1), one V(1), one Bi(1), and one Bi(3) atom to form distorted corner-sharing OMgVBi2 trigonal pyramids. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one V(2), one Bi(2), and one Bi(4) atom. In the eleventh O site, O(11) is bonded in a distorted bent 150 degrees geometry to one V(2) and one Bi(4) atom. is represented by the CIF card [CIF]
data_MgV2Bi4O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.597
_cell_length_b   6.265
_cell_length_c   8.438
_cell_angle_alpha   97.422
_cell_angle_beta   113.407
_cell_angle_gamma   71.647
_symmetry_Int_Tables_number   1
_cell_volume   303.767
_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  0.587  0.420  0.354  1.0
  V  V1  1  0.488  0.444  0.001  1.0
  V  V2  1  0.972  0.950  0.976  1.0
  Bi  Bi3  1  0.068  0.416  0.326  1.0
  Bi  Bi4  1  0.204  0.934  0.626  1.0
  Bi  Bi5  1  0.576  0.921  0.345  1.0
  Bi  Bi6  1  0.724  0.433  0.736  1.0
  O  O7  1  0.993  0.737  0.463  1.0
  O  O8  1  0.936  0.254  0.460  1.0
  O  O9  1  0.380  0.328  0.116  1.0
  O  O10  1  0.195  0.959  0.181  1.0
  O  O11  1  0.399  0.604  0.804  1.0
  O  O12  1  0.536  0.702  0.497  1.0
  O  O13  1  0.468  0.276  0.492  1.0
  O  O14  1  0.731  0.225  0.958  1.0
  O  O15  1  0.658  0.588  0.193  1.0
  O  O16  1  0.001  0.054  0.786  1.0
  O  O17  1  0.891  0.704  0.920  1.0
[/CIF]
.
The structure described by MgV2Bi4O11 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(3), one O(6), one O(7), and one O(9) atom to form MgO5 trigonal bipyramids that share  a cornercorner with one Bi(3)O5 square pyramid, corners with two equivalent Bi(2)O5 square pyramids,  an edgeedge with one Bi(4)O6 pentagonal pyramid,  an edgeedge with one Bi(3)O5 square pyramid, and  an edgeedge with one V(1)O4 trigonal pyramid. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(3), one O(5), one O(8), and one O(9) atom to form distorted VO4 trigonal pyramids that share  a cornercorner with one Bi(2)O5 square pyramid,  a cornercorner with one Bi(3)O5 square pyramid,  a cornercorner with one V(2)O4 tetrahedra,  an edgeedge with one Bi(4)O6 pentagonal pyramid, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. In the second V site, V(2) is bonded to one O(10), one O(11), one O(4), and one O(8) atom to form VO4 tetrahedra that share  a cornercorner with one Bi(4)O6 pentagonal pyramid,  a cornercorner with one Bi(2)O5 square pyramid,  a cornercorner with one Bi(3)O5 square pyramid,  a cornercorner with one V(1)O4 trigonal pyramid, and  an edgeedge with one Bi(4)O6 pentagonal pyramid. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a distorted see-saw-like geometry to one O(1), one O(2), one O(7), and one O(9) atom. In the second Bi site, Bi(2) is bonded to one O(1), one O(10), one O(2), one O(5), and one O(6) atom to form distorted BiO5 square pyramids that share  a cornercorner with one Bi(4)O6 pentagonal pyramid, corners with two equivalent Bi(3)O5 square pyramids,  a cornercorner with one V(2)O4 tetrahedra, corners with two equivalent Mg(1)O5 trigonal bipyramids,  a cornercorner with one V(1)O4 trigonal pyramid, and  an edgeedge with one Bi(4)O6 pentagonal pyramid. In the third Bi site, Bi(3) is bonded to one O(1), one O(4), one O(6), one O(7), and one O(9) atom to form distorted BiO5 square pyramids that share corners with two equivalent Bi(4)O6 pentagonal pyramids, corners with two equivalent Bi(2)O5 square pyramids,  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid,  a cornercorner with one V(1)O4 trigonal pyramid, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. In the fourth Bi site, Bi(4) is bonded to one O(10), one O(11), one O(5), one O(6), one O(7), and one O(8) atom to form distorted BiO6 pentagonal pyramids that share  a cornercorner with one Bi(2)O5 square pyramid, corners with two equivalent Bi(3)O5 square pyramids,  a cornercorner with one V(2)O4 tetrahedra,  an edgeedge with one Bi(2)O5 square pyramid,  an edgeedge with one V(2)O4 tetrahedra,  an edgeedge with one Mg(1)O5 trigonal bipyramid, and  an edgeedge with one V(1)O4 trigonal pyramid. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Bi(1), one Bi(2), and one Bi(3) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mg(1), one Bi(1), and one Bi(2) atom. In the third O site, O(3) is bonded in an L-shaped geometry to one Mg(1) and one V(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one V(2) and one Bi(3) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one V(1), one Bi(2), and one Bi(4) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Mg(1), one Bi(2), one Bi(3), and one Bi(4) atom. In the seventh O site, O(7) is bonded to one Mg(1), one Bi(1), one Bi(3), and one Bi(4) atom to form distorted corner-sharing OMgBi3 trigonal pyramids. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one V(1), one V(2), and one Bi(4) atom. In the ninth O site, O(9) is bonded to one Mg(1), one V(1), one Bi(1), and one Bi(3) atom to form distorted corner-sharing OMgVBi2 trigonal pyramids. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one V(2), one Bi(2), and one Bi(4) atom. In the eleventh O site, O(11) is bonded in a distorted bent 150 degrees geometry to one V(2) and one Bi(4) atom. is represented by the CIF card [CIF]
data_MgV2Bi4O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.597
_cell_length_b   6.265
_cell_length_c   8.438
_cell_angle_alpha   97.422
_cell_angle_beta   113.407
_cell_angle_gamma   71.647
_symmetry_Int_Tables_number   1
_cell_volume   303.767
_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  0.587  0.420  0.354  1.0
  V  V1  1  0.488  0.444  0.001  1.0
  V  V2  1  0.972  0.950  0.976  1.0
  Bi  Bi3  1  0.068  0.416  0.326  1.0
  Bi  Bi4  1  0.204  0.934  0.626  1.0
  Bi  Bi5  1  0.576  0.921  0.345  1.0
  Bi  Bi6  1  0.724  0.433  0.736  1.0
  O  O7  1  0.993  0.737  0.463  1.0
  O  O8  1  0.936  0.254  0.460  1.0
  O  O9  1  0.380  0.328  0.116  1.0
  O  O10  1  0.195  0.959  0.181  1.0
  O  O11  1  0.399  0.604  0.804  1.0
  O  O12  1  0.536  0.702  0.497  1.0
  O  O13  1  0.468  0.276  0.492  1.0
  O  O14  1  0.731  0.225  0.958  1.0
  O  O15  1  0.658  0.588  0.193  1.0
  O  O16  1  0.001  0.054  0.786  1.0
  O  O17  1  0.891  0.704  0.920  1.0
[/CIF]
.