The material described by MgV4O8 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(5) atom. There are four inequivalent V sites. In the first V site, V(1) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(5), one O(6), and one O(7) atom. In the second V site, V(2) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(5), one O(6), and one O(8) atom. In the third V site, V(3) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(5) atom. In the fourth V site, V(4) is bonded in a tetrahedral geometry to one O(4), one O(6), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in an L-shaped geometry to one Mg(1) and one V(3) atom. In the second O site, O(2) is bonded in an L-shaped geometry to one Mg(1) and one V(3) atom. In the third O site, O(3) is bonded to one Mg(1), one V(1), one V(2), and one V(3) atom to form a mixture of distorted face and corner-sharing OMgV3 tetrahedra. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one V(1), one V(2), and one V(4) atom. In the fifth O site, O(5) is bonded to one Mg(1), one V(1), one V(2), and one V(3) atom to form a mixture of distorted face and corner-sharing OMgV3 tetrahedra. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one V(1), one V(2), and one V(4) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one V(1) and one V(4) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one V(2) and one V(4) atom. is represented by the CIF file [CIF]
data_MgV4O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.634
_cell_length_b   5.632
_cell_length_c   6.616
_cell_angle_alpha   89.769
_cell_angle_beta   89.834
_cell_angle_gamma   61.144
_symmetry_Int_Tables_number   1
_cell_volume   183.893
_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  0.159  0.160  0.246  1.0
  V  V1  1  0.928  0.928  0.970  1.0
  V  V2  1  0.931  0.930  0.529  1.0
  V  V3  1  0.426  0.426  0.250  1.0
  V  V4  1  0.607  0.606  0.751  1.0
  O  O5  1  0.315  0.313  0.052  1.0
  O  O6  1  0.309  0.311  0.445  1.0
  O  O7  1  0.220  0.787  0.250  1.0
  O  O8  1  0.239  0.763  0.750  1.0
  O  O9  1  0.787  0.220  0.252  1.0
  O  O10  1  0.763  0.238  0.750  1.0
  O  O11  1  0.715  0.713  0.960  1.0
  O  O12  1  0.715  0.717  0.544  1.0
[/CIF]
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The material described by MgV4O8 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(5) atom. There are four inequivalent V sites. In the first V site, V(1) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(5), one O(6), and one O(7) atom. In the second V site, V(2) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(5), one O(6), and one O(8) atom. In the third V site, V(3) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(5) atom. In the fourth V site, V(4) is bonded in a tetrahedral geometry to one O(4), one O(6), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in an L-shaped geometry to one Mg(1) and one V(3) atom. In the second O site, O(2) is bonded in an L-shaped geometry to one Mg(1) and one V(3) atom. In the third O site, O(3) is bonded to one Mg(1), one V(1), one V(2), and one V(3) atom to form a mixture of distorted face and corner-sharing OMgV3 tetrahedra. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one V(1), one V(2), and one V(4) atom. In the fifth O site, O(5) is bonded to one Mg(1), one V(1), one V(2), and one V(3) atom to form a mixture of distorted face and corner-sharing OMgV3 tetrahedra. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one V(1), one V(2), and one V(4) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one V(1) and one V(4) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one V(2) and one V(4) atom. is represented by the CIF file [CIF]
data_MgV4O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.634
_cell_length_b   5.632
_cell_length_c   6.616
_cell_angle_alpha   89.769
_cell_angle_beta   89.834
_cell_angle_gamma   61.144
_symmetry_Int_Tables_number   1
_cell_volume   183.893
_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  0.159  0.160  0.246  1.0
  V  V1  1  0.928  0.928  0.970  1.0
  V  V2  1  0.931  0.930  0.529  1.0
  V  V3  1  0.426  0.426  0.250  1.0
  V  V4  1  0.607  0.606  0.751  1.0
  O  O5  1  0.315  0.313  0.052  1.0
  O  O6  1  0.309  0.311  0.445  1.0
  O  O7  1  0.220  0.787  0.250  1.0
  O  O8  1  0.239  0.763  0.750  1.0
  O  O9  1  0.787  0.220  0.252  1.0
  O  O10  1  0.763  0.238  0.750  1.0
  O  O11  1  0.715  0.713  0.960  1.0
  O  O12  1  0.715  0.717  0.544  1.0
[/CIF]
.