The material structure described by MgV3CoO8 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(4), one O(5), and one O(7) atom to form distorted MgO5 trigonal bipyramids that share  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one V(3)O4 tetrahedra, corners with two equivalent V(1)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra,  an edgeedge with one V(2)O4 tetrahedra, and  an edgeedge with one V(3)O4 tetrahedra. There are three inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(3), one O(7), and one O(8) atom to form VO4 tetrahedra that share corners with two equivalent V(3)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, and corners with two equivalent Mg(1)O5 trigonal bipyramids. In the second V site, V(2) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form distorted VO4 tetrahedra that share corners with two equivalent V(3)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. In the third V site, V(3) is bonded to one O(3), one O(4), one O(5), and one O(7) atom to form VO4 tetrahedra that share corners with two equivalent V(1)O4 tetrahedra, corners with two equivalent V(2)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. Co(1) is bonded to one O(1), one O(2), one O(6), and one O(8) atom to form CoO4 tetrahedra that share corners with two equivalent V(1)O4 tetrahedra, corners with two equivalent V(2)O4 tetrahedra, and corners with two equivalent Mg(1)O5 trigonal bipyramids. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mg(1), one V(1), and one Co(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(2), and one Co(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one V(1) and one V(3) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Mg(1), one V(2), and one V(3) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(2), and one V(3) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one V(2) and one Co(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one V(1), and one V(3) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one V(1) and one Co(1) atom. is represented by the CIF file [CIF]
data_MgV3CoO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.479
_cell_length_b   6.779
_cell_length_c   5.610
_cell_angle_alpha   89.869
_cell_angle_beta   87.420
_cell_angle_gamma   88.216
_symmetry_Int_Tables_number   1
_cell_volume   208.020
_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  0.876  0.393  0.515  1.0
  V  V1  1  0.073  0.088  0.036  1.0
  V  V2  1  0.413  0.658  0.480  1.0
  V  V3  1  0.596  0.359  0.988  1.0
  Co  Co4  1  0.898  0.890  0.546  1.0
  O  O5  1  0.969  0.131  0.348  1.0
  O  O6  1  0.088  0.632  0.463  1.0
  O  O7  1  0.398  0.160  0.988  1.0
  O  O8  1  0.566  0.502  0.709  1.0
  O  O9  1  0.612  0.501  0.255  1.0
  O  O10  1  0.547  0.883  0.492  1.0
  O  O11  1  0.911  0.287  0.863  1.0
  O  O12  1  0.005  0.882  0.875  1.0
[/CIF]
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The material structure described by MgV3CoO8 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(4), one O(5), and one O(7) atom to form distorted MgO5 trigonal bipyramids that share  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one V(3)O4 tetrahedra, corners with two equivalent V(1)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra,  an edgeedge with one V(2)O4 tetrahedra, and  an edgeedge with one V(3)O4 tetrahedra. There are three inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(3), one O(7), and one O(8) atom to form VO4 tetrahedra that share corners with two equivalent V(3)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra, and corners with two equivalent Mg(1)O5 trigonal bipyramids. In the second V site, V(2) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form distorted VO4 tetrahedra that share corners with two equivalent V(3)O4 tetrahedra, corners with two equivalent Co(1)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. In the third V site, V(3) is bonded to one O(3), one O(4), one O(5), and one O(7) atom to form VO4 tetrahedra that share corners with two equivalent V(1)O4 tetrahedra, corners with two equivalent V(2)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. Co(1) is bonded to one O(1), one O(2), one O(6), and one O(8) atom to form CoO4 tetrahedra that share corners with two equivalent V(1)O4 tetrahedra, corners with two equivalent V(2)O4 tetrahedra, and corners with two equivalent Mg(1)O5 trigonal bipyramids. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mg(1), one V(1), and one Co(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(2), and one Co(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one V(1) and one V(3) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Mg(1), one V(2), and one V(3) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(2), and one V(3) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one V(2) and one Co(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one V(1), and one V(3) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one V(1) and one Co(1) atom. is represented by the CIF file [CIF]
data_MgV3CoO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.479
_cell_length_b   6.779
_cell_length_c   5.610
_cell_angle_alpha   89.869
_cell_angle_beta   87.420
_cell_angle_gamma   88.216
_symmetry_Int_Tables_number   1
_cell_volume   208.020
_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  0.876  0.393  0.515  1.0
  V  V1  1  0.073  0.088  0.036  1.0
  V  V2  1  0.413  0.658  0.480  1.0
  V  V3  1  0.596  0.359  0.988  1.0
  Co  Co4  1  0.898  0.890  0.546  1.0
  O  O5  1  0.969  0.131  0.348  1.0
  O  O6  1  0.088  0.632  0.463  1.0
  O  O7  1  0.398  0.160  0.988  1.0
  O  O8  1  0.566  0.502  0.709  1.0
  O  O9  1  0.612  0.501  0.255  1.0
  O  O10  1  0.547  0.883  0.492  1.0
  O  O11  1  0.911  0.287  0.863  1.0
  O  O12  1  0.005  0.882  0.875  1.0
[/CIF]
.