The compound described by V3MnO8 crystallizes in the monoclinic Cm space group. There are three inequivalent V sites. In the first V site, V(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(8) atoms to form distorted VO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent V(1)O6 octahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 21-26°. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(4), one O(5), one O(6), one O(7), and two equivalent O(1) atoms. In the third V site, V(3) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and two equivalent O(7) atoms. Mn(1) is bonded to one O(5), one O(6), one O(7), one O(8), and two equivalent O(2) atoms to form distorted MnO6 octahedra that share  a cornercorner with one V(1)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, and edges with two equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 21-27°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one V(3) and two equivalent V(2) atoms. In the second O site, O(2) is bonded to one V(1), one V(3), and two equivalent Mn(1) atoms to form distorted OMn2V2 trigonal pyramids that share corners with two equivalent O(2)Mn2V2 trigonal pyramids and edges with two equivalent O(7)MnV3 trigonal pyramids. In the third O site, O(3) is bonded in a linear geometry to one V(1) and one V(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one V(3) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one Mn(1) atom. In the sixth O site, O(6) is bonded in a distorted linear geometry to one V(2) and one Mn(1) atom. In the seventh O site, O(7) is bonded to one V(2), two equivalent V(3), and one Mn(1) atom to form distorted OMnV3 trigonal pyramids that share corners with two equivalent O(7)MnV3 trigonal pyramids and edges with two equivalent O(2)Mn2V2 trigonal pyramids. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to two equivalent V(1) and one Mn(1) atom. is represented by the CIF card [CIF]
data_MnV3O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.310
_cell_length_b   6.310
_cell_length_c   6.637
_cell_angle_alpha   74.102
_cell_angle_beta   74.102
_cell_angle_gamma   35.127
_symmetry_Int_Tables_number   1
_cell_volume   145.649
_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
  Mn  Mn0  1  0.292  0.292  0.308  1.0
  V  V1  1  0.598  0.598  0.296  1.0
  V  V2  1  0.398  0.398  0.720  1.0
  V  V3  1  0.700  0.700  0.722  1.0
  O  O4  1  0.868  0.868  0.690  1.0
  O  O5  1  0.757  0.757  0.357  1.0
  O  O6  1  0.640  0.640  0.989  1.0
  O  O7  1  0.554  0.554  0.631  1.0
  O  O8  1  0.446  0.446  0.355  1.0
  O  O9  1  0.370  0.370  0.978  1.0
  O  O10  1  0.241  0.241  0.664  1.0
  O  O11  1  0.135  0.135  0.291  1.0
[/CIF]
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The compound described by V3MnO8 crystallizes in the monoclinic Cm space group. There are three inequivalent V sites. In the first V site, V(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(8) atoms to form distorted VO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent V(1)O6 octahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 21-26°. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(4), one O(5), one O(6), one O(7), and two equivalent O(1) atoms. In the third V site, V(3) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and two equivalent O(7) atoms. Mn(1) is bonded to one O(5), one O(6), one O(7), one O(8), and two equivalent O(2) atoms to form distorted MnO6 octahedra that share  a cornercorner with one V(1)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, and edges with two equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 21-27°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one V(3) and two equivalent V(2) atoms. In the second O site, O(2) is bonded to one V(1), one V(3), and two equivalent Mn(1) atoms to form distorted OMn2V2 trigonal pyramids that share corners with two equivalent O(2)Mn2V2 trigonal pyramids and edges with two equivalent O(7)MnV3 trigonal pyramids. In the third O site, O(3) is bonded in a linear geometry to one V(1) and one V(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one V(3) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one V(1), one V(2), and one Mn(1) atom. In the sixth O site, O(6) is bonded in a distorted linear geometry to one V(2) and one Mn(1) atom. In the seventh O site, O(7) is bonded to one V(2), two equivalent V(3), and one Mn(1) atom to form distorted OMnV3 trigonal pyramids that share corners with two equivalent O(7)MnV3 trigonal pyramids and edges with two equivalent O(2)Mn2V2 trigonal pyramids. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to two equivalent V(1) and one Mn(1) atom. is represented by the CIF card [CIF]
data_MnV3O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.310
_cell_length_b   6.310
_cell_length_c   6.637
_cell_angle_alpha   74.102
_cell_angle_beta   74.102
_cell_angle_gamma   35.127
_symmetry_Int_Tables_number   1
_cell_volume   145.649
_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
  Mn  Mn0  1  0.292  0.292  0.308  1.0
  V  V1  1  0.598  0.598  0.296  1.0
  V  V2  1  0.398  0.398  0.720  1.0
  V  V3  1  0.700  0.700  0.722  1.0
  O  O4  1  0.868  0.868  0.690  1.0
  O  O5  1  0.757  0.757  0.357  1.0
  O  O6  1  0.640  0.640  0.989  1.0
  O  O7  1  0.554  0.554  0.631  1.0
  O  O8  1  0.446  0.446  0.355  1.0
  O  O9  1  0.370  0.370  0.978  1.0
  O  O10  1  0.241  0.241  0.664  1.0
  O  O11  1  0.135  0.135  0.291  1.0
[/CIF]
.