The structure described by MgV2Ni(TeO5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(3), one O(5), one O(6), one O(7), and one O(9) atom to form distorted MgO5 square pyramids that share corners with two equivalent V(2)O6 octahedra,  a cornercorner with one Ni(1)O5 square pyramid, and  a faceface with one V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-61°. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(10), one O(4), one O(5), one O(7), and one O(9) atom to form VO6 octahedra that share corners with three equivalent Ni(1)O5 square pyramids, edges with two equivalent V(2)O6 octahedra, and  a faceface with one Mg(1)O5 square pyramid. In the second V site, V(2) is bonded to one O(1), one O(10), one O(2), one O(4), one O(6), and one O(7) atom to form VO6 octahedra that share corners with two equivalent Mg(1)O5 square pyramids, corners with three equivalent Ni(1)O5 square pyramids, and edges with two equivalent V(1)O6 octahedra. Ni(1) is bonded to one O(1), one O(10), one O(2), one O(8), and one O(9) atom to form NiO5 square pyramids that share corners with three equivalent V(1)O6 octahedra, corners with three equivalent V(2)O6 octahedra, and  a cornercorner with one Mg(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 47-56°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a 5-coordinate geometry to one O(3), one O(6), one O(7), one O(8), and one O(9) atom. In the second Te site, Te(2) is bonded in a 3-coordinate geometry to one O(2), one O(3), one O(4), one O(5), and one O(8) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one V(1), one V(2), and one Ni(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one V(2), one Ni(1), and one Te(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mg(1), one Te(1), and one Te(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one V(1), one V(2), and one Te(2) atom. In the fifth O site, O(5) is bonded in a T-shaped geometry to one Mg(1), one V(1), and one Te(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(2), and one Te(1) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Mg(1), one V(1), one V(2), and one Te(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Ni(1), one Te(1), and one Te(2) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Mg(1), one V(1), one Ni(1), and one Te(1) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one V(1), one V(2), and one Ni(1) atom. is represented by the CIF card [CIF]
data_MgV2Ni(TeO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.147
_cell_length_b   6.571
_cell_length_c   6.466
_cell_angle_alpha   88.452
_cell_angle_beta   66.056
_cell_angle_gamma   78.270
_symmetry_Int_Tables_number   1
_cell_volume   195.310
_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  0.294  0.933  0.690  1.0
  V  V1  1  0.705  0.589  0.598  1.0
  V  V2  1  0.334  0.394  0.400  1.0
  Ni  Ni3  1  0.978  0.538  0.005  1.0
  Te  Te4  1  0.300  0.871  0.216  1.0
  Te  Te5  1  0.692  0.129  0.790  1.0
  O  O6  1  0.014  0.531  0.306  1.0
  O  O7  1  0.624  0.369  0.136  1.0
  O  O8  1  0.285  0.128  0.946  1.0
  O  O9  1  0.592  0.321  0.583  1.0
  O  O10  1  0.737  0.897  0.587  1.0
  O  O11  1  0.253  0.102  0.432  1.0
  O  O12  1  0.392  0.691  0.443  1.0
  O  O13  1  0.710  0.850  0.042  1.0
  O  O14  1  0.353  0.671  0.854  1.0
  O  O15  1  0.988  0.466  0.703  1.0
[/CIF]
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The structure described by MgV2Ni(TeO5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(3), one O(5), one O(6), one O(7), and one O(9) atom to form distorted MgO5 square pyramids that share corners with two equivalent V(2)O6 octahedra,  a cornercorner with one Ni(1)O5 square pyramid, and  a faceface with one V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-61°. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(10), one O(4), one O(5), one O(7), and one O(9) atom to form VO6 octahedra that share corners with three equivalent Ni(1)O5 square pyramids, edges with two equivalent V(2)O6 octahedra, and  a faceface with one Mg(1)O5 square pyramid. In the second V site, V(2) is bonded to one O(1), one O(10), one O(2), one O(4), one O(6), and one O(7) atom to form VO6 octahedra that share corners with two equivalent Mg(1)O5 square pyramids, corners with three equivalent Ni(1)O5 square pyramids, and edges with two equivalent V(1)O6 octahedra. Ni(1) is bonded to one O(1), one O(10), one O(2), one O(8), and one O(9) atom to form NiO5 square pyramids that share corners with three equivalent V(1)O6 octahedra, corners with three equivalent V(2)O6 octahedra, and  a cornercorner with one Mg(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 47-56°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a 5-coordinate geometry to one O(3), one O(6), one O(7), one O(8), and one O(9) atom. In the second Te site, Te(2) is bonded in a 3-coordinate geometry to one O(2), one O(3), one O(4), one O(5), and one O(8) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one V(1), one V(2), and one Ni(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one V(2), one Ni(1), and one Te(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mg(1), one Te(1), and one Te(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one V(1), one V(2), and one Te(2) atom. In the fifth O site, O(5) is bonded in a T-shaped geometry to one Mg(1), one V(1), and one Te(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(2), and one Te(1) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Mg(1), one V(1), one V(2), and one Te(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Ni(1), one Te(1), and one Te(2) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Mg(1), one V(1), one Ni(1), and one Te(1) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one V(1), one V(2), and one Ni(1) atom. is represented by the CIF card [CIF]
data_MgV2Ni(TeO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.147
_cell_length_b   6.571
_cell_length_c   6.466
_cell_angle_alpha   88.452
_cell_angle_beta   66.056
_cell_angle_gamma   78.270
_symmetry_Int_Tables_number   1
_cell_volume   195.310
_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  0.294  0.933  0.690  1.0
  V  V1  1  0.705  0.589  0.598  1.0
  V  V2  1  0.334  0.394  0.400  1.0
  Ni  Ni3  1  0.978  0.538  0.005  1.0
  Te  Te4  1  0.300  0.871  0.216  1.0
  Te  Te5  1  0.692  0.129  0.790  1.0
  O  O6  1  0.014  0.531  0.306  1.0
  O  O7  1  0.624  0.369  0.136  1.0
  O  O8  1  0.285  0.128  0.946  1.0
  O  O9  1  0.592  0.321  0.583  1.0
  O  O10  1  0.737  0.897  0.587  1.0
  O  O11  1  0.253  0.102  0.432  1.0
  O  O12  1  0.392  0.691  0.443  1.0
  O  O13  1  0.710  0.850  0.042  1.0
  O  O14  1  0.353  0.671  0.854  1.0
  O  O15  1  0.988  0.466  0.703  1.0
[/CIF]
.