The material described by VMn2PO7 crystallizes in the monoclinic Cm space group. V(1) is bonded to one O(2), one O(3), and two equivalent O(4) atoms to form distorted VO4 tetrahedra that share corners with six equivalent Mn(1)O6 octahedra and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-63°. Mn(1) is bonded to one O(1), one O(2), two equivalent O(4), and two equivalent O(5) atoms to form distorted MnO6 octahedra that share corners with three equivalent V(1)O4 tetrahedra, corners with three equivalent P(1)O4 tetrahedra, and edges with three equivalent Mn(1)O6 octahedra. P(1) is bonded to one O(1), one O(3), and two equivalent O(5) atoms to form PO4 tetrahedra that share corners with six equivalent Mn(1)O6 octahedra and  a cornercorner with one V(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 43-60°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to two equivalent Mn(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one V(1) and two equivalent Mn(1) atoms. In the third O site, O(3) is bonded in a linear geometry to one V(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one V(1) and two equivalent Mn(1) atoms. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Mn(1) and one P(1) atom. is represented by the CIF card [CIF]
data_Mn2VPO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.850
_cell_length_b   5.524
_cell_length_c   5.524
_cell_angle_alpha   105.842
_cell_angle_beta   97.758
_cell_angle_gamma   97.758
_symmetry_Int_Tables_number   1
_cell_volume   138.780
_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  0.280  0.315  0.934  1.0
  Mn  Mn1  1  0.280  0.934  0.315  1.0
  V  V2  1  0.685  0.852  0.852  1.0
  P  P3  1  0.875  0.395  0.395  1.0
  O  O4  1  0.605  0.216  0.216  1.0
  O  O5  1  0.028  0.001  0.001  1.0
  O  O6  1  0.754  0.595  0.595  1.0
  O  O7  1  0.491  0.695  0.024  1.0
  O  O8  1  0.491  0.024  0.695  1.0
  O  O9  1  0.055  0.539  0.249  1.0
  O  O10  1  0.055  0.249  0.539  1.0
[/CIF]
.
The material described by VMn2PO7 crystallizes in the monoclinic Cm space group. V(1) is bonded to one O(2), one O(3), and two equivalent O(4) atoms to form distorted VO4 tetrahedra that share corners with six equivalent Mn(1)O6 octahedra and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-63°. Mn(1) is bonded to one O(1), one O(2), two equivalent O(4), and two equivalent O(5) atoms to form distorted MnO6 octahedra that share corners with three equivalent V(1)O4 tetrahedra, corners with three equivalent P(1)O4 tetrahedra, and edges with three equivalent Mn(1)O6 octahedra. P(1) is bonded to one O(1), one O(3), and two equivalent O(5) atoms to form PO4 tetrahedra that share corners with six equivalent Mn(1)O6 octahedra and  a cornercorner with one V(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 43-60°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to two equivalent Mn(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one V(1) and two equivalent Mn(1) atoms. In the third O site, O(3) is bonded in a linear geometry to one V(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one V(1) and two equivalent Mn(1) atoms. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Mn(1) and one P(1) atom. is represented by the CIF card [CIF]
data_Mn2VPO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.850
_cell_length_b   5.524
_cell_length_c   5.524
_cell_angle_alpha   105.842
_cell_angle_beta   97.758
_cell_angle_gamma   97.758
_symmetry_Int_Tables_number   1
_cell_volume   138.780
_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  0.280  0.315  0.934  1.0
  Mn  Mn1  1  0.280  0.934  0.315  1.0
  V  V2  1  0.685  0.852  0.852  1.0
  P  P3  1  0.875  0.395  0.395  1.0
  O  O4  1  0.605  0.216  0.216  1.0
  O  O5  1  0.028  0.001  0.001  1.0
  O  O6  1  0.754  0.595  0.595  1.0
  O  O7  1  0.491  0.695  0.024  1.0
  O  O8  1  0.491  0.024  0.695  1.0
  O  O9  1  0.055  0.539  0.249  1.0
  O  O10  1  0.055  0.249  0.539  1.0
[/CIF]
.