The material structure described by Nb2Mn3Fe3O16 is beta Vanadium nitride-derived structured and crystallizes in the monoclinic Cm space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(2), one O(8), two equivalent O(1), and two equivalent O(6) atoms to form NbO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, and edges with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-52°. In the second Nb site, Nb(2) is bonded to one O(12), one O(7), two equivalent O(11), and two equivalent O(9) atoms to form distorted NbO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with four equivalent Fe(1)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-52°. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(3), one O(4), two equivalent O(11), and two equivalent O(6) atoms to form MnO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra,  an edgeedge with one Nb(1)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(12), one O(5), one O(8), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra,  an edgeedge with one Nb(2)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(11), one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form FeO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra,  an edgeedge with one Nb(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-52°. In the second Fe site, Fe(2) is bonded to one O(10), one O(5), two equivalent O(1), and two equivalent O(9) atoms to form FeO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra,  an edgeedge with one Nb(2)O6 octahedra, and edges with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Nb(1), one Mn(2), and one Fe(2) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Nb(1) and two equivalent Fe(1) atoms. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Mn(1) and two equivalent Fe(1) atoms. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to one Mn(1) and two equivalent Fe(1) atoms. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Mn(2) and one Fe(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Nb(1), one Mn(1), and one Fe(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Nb(2) and two equivalent Fe(1) atoms. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Nb(1) and two equivalent Mn(2) atoms. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Nb(2), one Mn(2), and one Fe(2) atom. In the tenth O site, O(10) is bonded in a distorted T-shaped geometry to two equivalent Mn(2) and one Fe(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Nb(2), one Mn(1), and one Fe(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal non-coplanar geometry to one Nb(2) and two equivalent Mn(2) atoms. is represented by the CIF file [CIF]
data_Mn3Nb2Fe3O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.946
_cell_length_b   5.946
_cell_length_c   9.342
_cell_angle_alpha   88.902
_cell_angle_beta   88.902
_cell_angle_gamma   59.571
_symmetry_Int_Tables_number   1
_cell_volume   284.762
_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  0.171  0.171  0.786  1.0
  Mn  Mn1  1  0.833  0.339  0.287  1.0
  Mn  Mn2  1  0.339  0.833  0.287  1.0
  Nb  Nb3  1  0.331  0.331  0.504  1.0
  Nb  Nb4  1  0.667  0.667  0.001  1.0
  Fe  Fe5  1  0.667  0.171  0.788  1.0
  Fe  Fe6  1  0.171  0.667  0.788  1.0
  Fe  Fe7  1  0.834  0.834  0.287  1.0
  O  O8  1  0.663  0.171  0.401  1.0
  O  O9  1  0.477  0.477  0.657  1.0
  O  O10  1  0.328  0.328  0.893  1.0
  O  O11  1  0.008  0.008  0.691  1.0
  O  O12  1  0.006  0.006  0.191  1.0
  O  O13  1  0.171  0.663  0.401  1.0
  O  O14  1  0.467  0.040  0.663  1.0
  O  O15  1  0.040  0.467  0.663  1.0
  O  O16  1  0.833  0.833  0.905  1.0
  O  O17  1  0.167  0.167  0.396  1.0
  O  O18  1  0.955  0.512  0.165  1.0
  O  O19  1  0.512  0.955  0.165  1.0
  O  O20  1  0.661  0.661  0.391  1.0
  O  O21  1  0.838  0.338  0.902  1.0
  O  O22  1  0.521  0.521  0.172  1.0
  O  O23  1  0.338  0.838  0.902  1.0
[/CIF]
.
The material structure described by Nb2Mn3Fe3O16 is beta Vanadium nitride-derived structured and crystallizes in the monoclinic Cm space group. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(2), one O(8), two equivalent O(1), and two equivalent O(6) atoms to form NbO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, and edges with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-52°. In the second Nb site, Nb(2) is bonded to one O(12), one O(7), two equivalent O(11), and two equivalent O(9) atoms to form distorted NbO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with four equivalent Fe(1)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-52°. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(3), one O(4), two equivalent O(11), and two equivalent O(6) atoms to form MnO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra,  an edgeedge with one Nb(1)O6 octahedra, and edges with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(12), one O(5), one O(8), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra,  an edgeedge with one Nb(2)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(11), one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form FeO6 octahedra that share corners with two equivalent Nb(2)O6 octahedra,  an edgeedge with one Nb(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-52°. In the second Fe site, Fe(2) is bonded to one O(10), one O(5), two equivalent O(1), and two equivalent O(9) atoms to form FeO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra,  an edgeedge with one Nb(2)O6 octahedra, and edges with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Nb(1), one Mn(2), and one Fe(2) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Nb(1) and two equivalent Fe(1) atoms. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Mn(1) and two equivalent Fe(1) atoms. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to one Mn(1) and two equivalent Fe(1) atoms. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Mn(2) and one Fe(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Nb(1), one Mn(1), and one Fe(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Nb(2) and two equivalent Fe(1) atoms. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Nb(1) and two equivalent Mn(2) atoms. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Nb(2), one Mn(2), and one Fe(2) atom. In the tenth O site, O(10) is bonded in a distorted T-shaped geometry to two equivalent Mn(2) and one Fe(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Nb(2), one Mn(1), and one Fe(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal non-coplanar geometry to one Nb(2) and two equivalent Mn(2) atoms. is represented by the CIF file [CIF]
data_Mn3Nb2Fe3O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.946
_cell_length_b   5.946
_cell_length_c   9.342
_cell_angle_alpha   88.902
_cell_angle_beta   88.902
_cell_angle_gamma   59.571
_symmetry_Int_Tables_number   1
_cell_volume   284.762
_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  0.171  0.171  0.786  1.0
  Mn  Mn1  1  0.833  0.339  0.287  1.0
  Mn  Mn2  1  0.339  0.833  0.287  1.0
  Nb  Nb3  1  0.331  0.331  0.504  1.0
  Nb  Nb4  1  0.667  0.667  0.001  1.0
  Fe  Fe5  1  0.667  0.171  0.788  1.0
  Fe  Fe6  1  0.171  0.667  0.788  1.0
  Fe  Fe7  1  0.834  0.834  0.287  1.0
  O  O8  1  0.663  0.171  0.401  1.0
  O  O9  1  0.477  0.477  0.657  1.0
  O  O10  1  0.328  0.328  0.893  1.0
  O  O11  1  0.008  0.008  0.691  1.0
  O  O12  1  0.006  0.006  0.191  1.0
  O  O13  1  0.171  0.663  0.401  1.0
  O  O14  1  0.467  0.040  0.663  1.0
  O  O15  1  0.040  0.467  0.663  1.0
  O  O16  1  0.833  0.833  0.905  1.0
  O  O17  1  0.167  0.167  0.396  1.0
  O  O18  1  0.955  0.512  0.165  1.0
  O  O19  1  0.512  0.955  0.165  1.0
  O  O20  1  0.661  0.661  0.391  1.0
  O  O21  1  0.838  0.338  0.902  1.0
  O  O22  1  0.521  0.521  0.172  1.0
  O  O23  1  0.338  0.838  0.902  1.0
[/CIF]
.