The material described by MgV2Ni(TeO5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(3), one O(6), and one O(9) atom to form distorted MgO5 trigonal bipyramids that share corners with two equivalent V(1)O6 octahedra, corners with two equivalent Ni(1)O4 tetrahedra, and  a faceface with one V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-49°. 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 two equivalent Ni(1)O4 tetrahedra, corners with two equivalent Mg(1)O5 trigonal bipyramids, and edges with two equivalent V(2)O6 octahedra. 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 distorted VO6 octahedra that share corners with two equivalent Ni(1)O4 tetrahedra, edges with two equivalent V(1)O6 octahedra, and  a faceface with one Mg(1)O5 trigonal bipyramid. Ni(1) is bonded to one O(10), one O(2), one O(8), and one O(9) atom to form distorted NiO4 tetrahedra that share corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(2)O6 octahedra, and corners with two equivalent Mg(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 37-63°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a 4-coordinate geometry to one O(3), one O(6), one O(7), and one O(8) atom. In the second Te site, Te(2) is bonded in a 4-coordinate geometry to 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 T-shaped geometry to one Mg(1), one V(1), and one V(2) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Mg(1), one V(2), and one Ni(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar 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 bent 150 degrees geometry to one V(1) and one Te(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mg(1), one V(2), and one Te(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one V(1), one V(2), and one Te(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Ni(1), one Te(1), and one Te(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(1), and one Ni(1) atom. In the tenth O site, O(10) is bonded in a trigonal non-coplanar 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   5.273
_cell_length_b   6.759
_cell_length_c   7.537
_cell_angle_alpha   78.752
_cell_angle_beta   58.511
_cell_angle_gamma   74.615
_symmetry_Int_Tables_number   1
_cell_volume   220.325
_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  0.314  0.375  0.100  1.0
  V  V1  1  0.676  0.597  0.590  1.0
  V  V2  1  0.354  0.418  0.433  1.0
  Ni  Ni3  1  0.942  0.554  0.926  1.0
  Te  Te4  1  0.325  0.892  0.232  1.0
  Te  Te5  1  0.743  0.080  0.721  1.0
  O  O6  1  0.042  0.553  0.337  1.0
  O  O7  1  0.632  0.412  0.156  1.0
  O  O8  1  0.339  0.139  0.963  1.0
  O  O9  1  0.613  0.312  0.558  1.0
  O  O10  1  0.707  0.882  0.595  1.0
  O  O11  1  0.286  0.130  0.350  1.0
  O  O12  1  0.425  0.688  0.440  1.0
  O  O13  1  0.743  0.838  0.007  1.0
  O  O14  1  0.355  0.577  0.853  1.0
  O  O15  1  0.976  0.448  0.689  1.0
[/CIF]
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The material described by MgV2Ni(TeO5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(3), one O(6), and one O(9) atom to form distorted MgO5 trigonal bipyramids that share corners with two equivalent V(1)O6 octahedra, corners with two equivalent Ni(1)O4 tetrahedra, and  a faceface with one V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-49°. 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 two equivalent Ni(1)O4 tetrahedra, corners with two equivalent Mg(1)O5 trigonal bipyramids, and edges with two equivalent V(2)O6 octahedra. 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 distorted VO6 octahedra that share corners with two equivalent Ni(1)O4 tetrahedra, edges with two equivalent V(1)O6 octahedra, and  a faceface with one Mg(1)O5 trigonal bipyramid. Ni(1) is bonded to one O(10), one O(2), one O(8), and one O(9) atom to form distorted NiO4 tetrahedra that share corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(2)O6 octahedra, and corners with two equivalent Mg(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 37-63°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a 4-coordinate geometry to one O(3), one O(6), one O(7), and one O(8) atom. In the second Te site, Te(2) is bonded in a 4-coordinate geometry to 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 T-shaped geometry to one Mg(1), one V(1), and one V(2) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Mg(1), one V(2), and one Ni(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar 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 bent 150 degrees geometry to one V(1) and one Te(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mg(1), one V(2), and one Te(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one V(1), one V(2), and one Te(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Ni(1), one Te(1), and one Te(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(1), and one Ni(1) atom. In the tenth O site, O(10) is bonded in a trigonal non-coplanar 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   5.273
_cell_length_b   6.759
_cell_length_c   7.537
_cell_angle_alpha   78.752
_cell_angle_beta   58.511
_cell_angle_gamma   74.615
_symmetry_Int_Tables_number   1
_cell_volume   220.325
_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  0.314  0.375  0.100  1.0
  V  V1  1  0.676  0.597  0.590  1.0
  V  V2  1  0.354  0.418  0.433  1.0
  Ni  Ni3  1  0.942  0.554  0.926  1.0
  Te  Te4  1  0.325  0.892  0.232  1.0
  Te  Te5  1  0.743  0.080  0.721  1.0
  O  O6  1  0.042  0.553  0.337  1.0
  O  O7  1  0.632  0.412  0.156  1.0
  O  O8  1  0.339  0.139  0.963  1.0
  O  O9  1  0.613  0.312  0.558  1.0
  O  O10  1  0.707  0.882  0.595  1.0
  O  O11  1  0.286  0.130  0.350  1.0
  O  O12  1  0.425  0.688  0.440  1.0
  O  O13  1  0.743  0.838  0.007  1.0
  O  O14  1  0.355  0.577  0.853  1.0
  O  O15  1  0.976  0.448  0.689  1.0
[/CIF]
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