The compound described by VMn5O8 crystallizes in the triclinic P-1 space group. V(1) is bonded to one O(1), one O(2), one O(7), and one O(8) atom to form VO4 tetrahedra that share corners with three equivalent Mn(1)O6 octahedra, corners with three equivalent Mn(3)O6 octahedra, and corners with three equivalent Mn(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-58°. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(8) atom to form MnO6 octahedra that share  a cornercorner with one Mn(6)O6 octahedra, corners with two equivalent Mn(5)O6 octahedra, corners with three equivalent V(1)O4 tetrahedra,  an edgeedge with one Mn(6)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, edges with two equivalent Mn(3)O6 octahedra, and edges with two equivalent Mn(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-15°. In the second Mn site, Mn(2) is bonded to one O(3), one O(4), two equivalent O(5), and two equivalent O(6) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 4-18°. In the third Mn site, Mn(3) is bonded to one O(2), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form MnO6 octahedra that share corners with three equivalent Mn(2)O6 octahedra, corners with three equivalent V(1)O4 tetrahedra,  an edgeedge with one Mn(2)O6 octahedra,  an edgeedge with one Mn(5)O6 octahedra,  an edgeedge with one Mn(6)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Mn(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-18°. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form MnO6 octahedra that share corners with three equivalent Mn(2)O6 octahedra, corners with three equivalent V(1)O4 tetrahedra,  an edgeedge with one Mn(2)O6 octahedra,  an edgeedge with one Mn(5)O6 octahedra,  an edgeedge with one Mn(6)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 6-16°. In the fifth Mn site, Mn(5) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(6) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 14-15°. In the sixth Mn site, Mn(6) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 1°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one V(1), one Mn(1), and one Mn(4) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one V(1), one Mn(1), and one Mn(3) atom. In the third O site, O(3) is bonded to one Mn(1), one Mn(2), one Mn(4), one Mn(5), and one Mn(6) atom to form OMn5 square pyramids that share  a cornercorner with one O(6)Mn5 square pyramid, corners with two equivalent O(3)Mn5 square pyramids, corners with two equivalent O(4)Mn5 square pyramids, edges with three equivalent O(5)Mn6 octahedra, edges with two equivalent O(4)Mn5 square pyramids, edges with two equivalent O(6)Mn5 square pyramids, and  an edgeedge with one O(8)Mn3V trigonal pyramid. In the fourth O site, O(4) is bonded to one Mn(1), one Mn(2), one Mn(3), one Mn(5), and one Mn(6) atom to form OMn5 square pyramids that share  a cornercorner with one O(6)Mn5 square pyramid, corners with two equivalent O(3)Mn5 square pyramids, corners with two equivalent O(4)Mn5 square pyramids, edges with three equivalent O(5)Mn6 octahedra, edges with two equivalent O(3)Mn5 square pyramids, edges with two equivalent O(6)Mn5 square pyramids, and  an edgeedge with one O(8)Mn3V trigonal pyramid. In the fifth O site, O(5) is bonded to one Mn(1), one Mn(3), one Mn(4), one Mn(6), and two equivalent Mn(2) atoms to form OMn6 octahedra that share  a cornercorner with one O(5)Mn6 octahedra, corners with two equivalent O(6)Mn5 square pyramids,  a cornercorner with one O(8)Mn3V trigonal pyramid,  an edgeedge with one O(5)Mn6 octahedra, edges with two equivalent O(6)Mn5 square pyramids, edges with three equivalent O(3)Mn5 square pyramids, edges with three equivalent O(4)Mn5 square pyramids, and  an edgeedge with one O(8)Mn3V trigonal pyramid. The corner-sharing octahedra are not tilted. In the sixth O site, O(6) is bonded to one Mn(3), one Mn(4), one Mn(5), and two equivalent Mn(2) atoms to form OMn5 square pyramids that share corners with two equivalent O(5)Mn6 octahedra,  a cornercorner with one O(3)Mn5 square pyramid,  a cornercorner with one O(4)Mn5 square pyramid,  a cornercorner with one O(6)Mn5 square pyramid, corners with two equivalent O(8)Mn3V trigonal pyramids, edges with two equivalent O(5)Mn6 octahedra,  an edgeedge with one O(6)Mn5 square pyramid, edges with two equivalent O(3)Mn5 square pyramids, and edges with two equivalent O(4)Mn5 square pyramids. The corner-sharing octahedral tilt angles range from 9-13°. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one V(1), one Mn(3), and one Mn(4) atom. In the eighth O site, O(8) is bonded to one V(1), one Mn(1), one Mn(3), and one Mn(4) atom to form distorted OMn3V trigonal pyramids that share  a cornercorner with one O(5)Mn6 octahedra, corners with two equivalent O(6)Mn5 square pyramids,  an edgeedge with one O(5)Mn6 octahedra,  an edgeedge with one O(3)Mn5 square pyramid, and  an edgeedge with one O(4)Mn5 square pyramid. The corner-sharing octahedral tilt angles are 3°. is represented by the CIF card [CIF]
data_Mn5VO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.406
_cell_length_b   6.185
_cell_length_c   10.178
_cell_angle_alpha   106.876
_cell_angle_beta   99.315
_cell_angle_gamma   90.485
_symmetry_Int_Tables_number   1
_cell_volume   320.831
_cell_formula_units_Z   2
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  0.242  0.363  0.731  1.0
  Mn  Mn1  1  0.758  0.637  0.269  1.0
  Mn  Mn2  1  0.505  0.250  0.004  1.0
  Mn  Mn3  1  0.495  0.750  0.996  1.0
  Mn  Mn4  1  0.742  0.107  0.734  1.0
  Mn  Mn5  1  0.258  0.893  0.266  1.0
  Mn  Mn6  1  0.253  0.381  0.267  1.0
  Mn  Mn7  1  0.747  0.619  0.733  1.0
  Mn  Mn8  1  0.000  0.000  0.000  1.0
  Mn  Mn9  1  0.000  0.500  0.000  1.0
  V  V10  1  0.197  0.787  0.573  1.0
  V  V11  1  0.803  0.213  0.427  1.0
  O  O12  1  0.370  0.589  0.632  1.0
  O  O13  1  0.630  0.411  0.368  1.0
  O  O14  1  0.633  0.953  0.366  1.0
  O  O15  1  0.367  0.047  0.634  1.0
  O  O16  1  0.110  0.648  0.877  1.0
  O  O17  1  0.890  0.352  0.123  1.0
  O  O18  1  0.900  0.790  0.108  1.0
  O  O19  1  0.100  0.210  0.892  1.0
  O  O20  1  0.393  0.573  0.140  1.0
  O  O21  1  0.607  0.427  0.860  1.0
  O  O22  1  0.327  0.057  0.112  1.0
  O  O23  1  0.673  0.943  0.888  1.0
  O  O24  1  0.912  0.815  0.633  1.0
  O  O25  1  0.088  0.185  0.367  1.0
  O  O26  1  0.868  0.302  0.613  1.0
  O  O27  1  0.132  0.698  0.387  1.0
[/CIF]
.
The compound described by VMn5O8 crystallizes in the triclinic P-1 space group. V(1) is bonded to one O(1), one O(2), one O(7), and one O(8) atom to form VO4 tetrahedra that share corners with three equivalent Mn(1)O6 octahedra, corners with three equivalent Mn(3)O6 octahedra, and corners with three equivalent Mn(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-58°. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(8) atom to form MnO6 octahedra that share  a cornercorner with one Mn(6)O6 octahedra, corners with two equivalent Mn(5)O6 octahedra, corners with three equivalent V(1)O4 tetrahedra,  an edgeedge with one Mn(6)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, edges with two equivalent Mn(3)O6 octahedra, and edges with two equivalent Mn(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-15°. In the second Mn site, Mn(2) is bonded to one O(3), one O(4), two equivalent O(5), and two equivalent O(6) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 4-18°. In the third Mn site, Mn(3) is bonded to one O(2), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form MnO6 octahedra that share corners with three equivalent Mn(2)O6 octahedra, corners with three equivalent V(1)O4 tetrahedra,  an edgeedge with one Mn(2)O6 octahedra,  an edgeedge with one Mn(5)O6 octahedra,  an edgeedge with one Mn(6)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Mn(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-18°. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form MnO6 octahedra that share corners with three equivalent Mn(2)O6 octahedra, corners with three equivalent V(1)O4 tetrahedra,  an edgeedge with one Mn(2)O6 octahedra,  an edgeedge with one Mn(5)O6 octahedra,  an edgeedge with one Mn(6)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 6-16°. In the fifth Mn site, Mn(5) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(6) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 14-15°. In the sixth Mn site, Mn(6) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form a mixture of corner and edge-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 1°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one V(1), one Mn(1), and one Mn(4) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one V(1), one Mn(1), and one Mn(3) atom. In the third O site, O(3) is bonded to one Mn(1), one Mn(2), one Mn(4), one Mn(5), and one Mn(6) atom to form OMn5 square pyramids that share  a cornercorner with one O(6)Mn5 square pyramid, corners with two equivalent O(3)Mn5 square pyramids, corners with two equivalent O(4)Mn5 square pyramids, edges with three equivalent O(5)Mn6 octahedra, edges with two equivalent O(4)Mn5 square pyramids, edges with two equivalent O(6)Mn5 square pyramids, and  an edgeedge with one O(8)Mn3V trigonal pyramid. In the fourth O site, O(4) is bonded to one Mn(1), one Mn(2), one Mn(3), one Mn(5), and one Mn(6) atom to form OMn5 square pyramids that share  a cornercorner with one O(6)Mn5 square pyramid, corners with two equivalent O(3)Mn5 square pyramids, corners with two equivalent O(4)Mn5 square pyramids, edges with three equivalent O(5)Mn6 octahedra, edges with two equivalent O(3)Mn5 square pyramids, edges with two equivalent O(6)Mn5 square pyramids, and  an edgeedge with one O(8)Mn3V trigonal pyramid. In the fifth O site, O(5) is bonded to one Mn(1), one Mn(3), one Mn(4), one Mn(6), and two equivalent Mn(2) atoms to form OMn6 octahedra that share  a cornercorner with one O(5)Mn6 octahedra, corners with two equivalent O(6)Mn5 square pyramids,  a cornercorner with one O(8)Mn3V trigonal pyramid,  an edgeedge with one O(5)Mn6 octahedra, edges with two equivalent O(6)Mn5 square pyramids, edges with three equivalent O(3)Mn5 square pyramids, edges with three equivalent O(4)Mn5 square pyramids, and  an edgeedge with one O(8)Mn3V trigonal pyramid. The corner-sharing octahedra are not tilted. In the sixth O site, O(6) is bonded to one Mn(3), one Mn(4), one Mn(5), and two equivalent Mn(2) atoms to form OMn5 square pyramids that share corners with two equivalent O(5)Mn6 octahedra,  a cornercorner with one O(3)Mn5 square pyramid,  a cornercorner with one O(4)Mn5 square pyramid,  a cornercorner with one O(6)Mn5 square pyramid, corners with two equivalent O(8)Mn3V trigonal pyramids, edges with two equivalent O(5)Mn6 octahedra,  an edgeedge with one O(6)Mn5 square pyramid, edges with two equivalent O(3)Mn5 square pyramids, and edges with two equivalent O(4)Mn5 square pyramids. The corner-sharing octahedral tilt angles range from 9-13°. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one V(1), one Mn(3), and one Mn(4) atom. In the eighth O site, O(8) is bonded to one V(1), one Mn(1), one Mn(3), and one Mn(4) atom to form distorted OMn3V trigonal pyramids that share  a cornercorner with one O(5)Mn6 octahedra, corners with two equivalent O(6)Mn5 square pyramids,  an edgeedge with one O(5)Mn6 octahedra,  an edgeedge with one O(3)Mn5 square pyramid, and  an edgeedge with one O(4)Mn5 square pyramid. The corner-sharing octahedral tilt angles are 3°. is represented by the CIF card [CIF]
data_Mn5VO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.406
_cell_length_b   6.185
_cell_length_c   10.178
_cell_angle_alpha   106.876
_cell_angle_beta   99.315
_cell_angle_gamma   90.485
_symmetry_Int_Tables_number   1
_cell_volume   320.831
_cell_formula_units_Z   2
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  0.242  0.363  0.731  1.0
  Mn  Mn1  1  0.758  0.637  0.269  1.0
  Mn  Mn2  1  0.505  0.250  0.004  1.0
  Mn  Mn3  1  0.495  0.750  0.996  1.0
  Mn  Mn4  1  0.742  0.107  0.734  1.0
  Mn  Mn5  1  0.258  0.893  0.266  1.0
  Mn  Mn6  1  0.253  0.381  0.267  1.0
  Mn  Mn7  1  0.747  0.619  0.733  1.0
  Mn  Mn8  1  0.000  0.000  0.000  1.0
  Mn  Mn9  1  0.000  0.500  0.000  1.0
  V  V10  1  0.197  0.787  0.573  1.0
  V  V11  1  0.803  0.213  0.427  1.0
  O  O12  1  0.370  0.589  0.632  1.0
  O  O13  1  0.630  0.411  0.368  1.0
  O  O14  1  0.633  0.953  0.366  1.0
  O  O15  1  0.367  0.047  0.634  1.0
  O  O16  1  0.110  0.648  0.877  1.0
  O  O17  1  0.890  0.352  0.123  1.0
  O  O18  1  0.900  0.790  0.108  1.0
  O  O19  1  0.100  0.210  0.892  1.0
  O  O20  1  0.393  0.573  0.140  1.0
  O  O21  1  0.607  0.427  0.860  1.0
  O  O22  1  0.327  0.057  0.112  1.0
  O  O23  1  0.673  0.943  0.888  1.0
  O  O24  1  0.912  0.815  0.633  1.0
  O  O25  1  0.088  0.185  0.367  1.0
  O  O26  1  0.868  0.302  0.613  1.0
  O  O27  1  0.132  0.698  0.387  1.0
[/CIF]
.