The material structure described by Mg3Mn3(BO5)2 crystallizes in the monoclinic P2_1/m space group. There are three inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form MgO6 octahedra that share corners with four equivalent Mn(2)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Mg(2)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 17-20°. In the second Mg site, Mg(2) is bonded to one O(5), one O(7), two equivalent O(2), and two equivalent O(3) atoms to form MgO6 octahedra that share  a cornercorner with one Mg(3)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles are 62°. In the third Mg site, Mg(3) is bonded to one O(1), one O(7), and four equivalent O(6) atoms to form MgO6 octahedra that share  a cornercorner with one Mg(2)O6 octahedra,  a cornercorner with one Mn(1)O6 octahedra, edges with two equivalent Mg(3)O6 octahedra, and edges with four equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 61-62°. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form MnO6 octahedra that share  a cornercorner with one Mg(3)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Mg(2)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 61-63°. In the second Mn site, Mn(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms to form MnO6 octahedra that share corners with four equivalent Mg(1)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Mg(2)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 17-20°. In the third Mn site, Mn(3) is bonded to two equivalent O(1), two equivalent O(6), and two equivalent O(7) atoms to form MnO6 octahedra that share corners with two equivalent Mg(2)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, edges with two equivalent Mn(3)O6 octahedra, and edges with four equivalent Mg(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 62-63°. B(1) is bonded in a trigonal planar geometry to one O(2), one O(3), and one O(6) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded to one Mg(3), one Mn(1), and two equivalent Mn(3) atoms to form OMgMn3 tetrahedra that share  a cornercorner with one O(4)Mg2Mn3 square pyramid, corners with two equivalent O(1)MgMn3 tetrahedra, corners with three equivalent O(7)Mg2Mn2 tetrahedra, and  an edgeedge with one O(7)Mg2Mn2 tetrahedra. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Mg(2), one Mn(1), one Mn(2), and one B(1) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Mg(2), one Mn(1), and one B(1) atom. In the fourth O site, O(4) is bonded to two equivalent Mg(1), one Mn(1), and two equivalent Mn(2) atoms to form OMg2Mn3 square pyramids that share corners with four equivalent O(4)Mg2Mn3 square pyramids,  a cornercorner with one O(1)MgMn3 tetrahedra, and edges with four equivalent O(5)Mg3Mn2 square pyramids. In the fifth O site, O(5) is bonded to one Mg(2), two equivalent Mg(1), and two equivalent Mn(2) atoms to form OMg3Mn2 square pyramids that share corners with four equivalent O(5)Mg3Mn2 square pyramids,  a cornercorner with one O(7)Mg2Mn2 tetrahedra, and edges with four equivalent O(4)Mg2Mn3 square pyramids. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Mg(3), one Mn(3), and one B(1) atom. In the seventh O site, O(7) is bonded to one Mg(2), one Mg(3), and two equivalent Mn(3) atoms to form OMg2Mn2 tetrahedra that share  a cornercorner with one O(5)Mg3Mn2 square pyramid, corners with two equivalent O(7)Mg2Mn2 tetrahedra, corners with three equivalent O(1)MgMn3 tetrahedra, and  an edgeedge with one O(1)MgMn3 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg3Mn3(BO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.089
_cell_length_b   5.508
_cell_length_c   10.947
_cell_angle_alpha   83.817
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   365.013
_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
  Mg  Mg0  1  0.000  0.000  0.000  1.0
  Mg  Mg1  1  0.250  0.795  0.774  1.0
  Mg  Mg2  1  0.750  0.205  0.226  1.0
  Mg  Mg3  1  0.500  0.000  0.000  1.0
  Mg  Mg4  1  0.250  0.504  0.501  1.0
  Mg  Mg5  1  0.750  0.496  0.499  1.0
  Mn  Mn6  1  0.750  0.797  0.772  1.0
  Mn  Mn7  1  0.250  0.203  0.228  1.0
  Mn  Mn8  1  0.500  0.500  0.000  1.0
  Mn  Mn9  1  0.500  0.000  0.500  1.0
  Mn  Mn10  1  0.000  0.000  0.500  1.0
  Mn  Mn11  1  0.000  0.500  0.000  1.0
  B  B12  1  0.004  0.302  0.736  1.0
  B  B13  1  0.996  0.698  0.264  1.0
  B  B14  1  0.504  0.698  0.264  1.0
  B  B15  1  0.496  0.302  0.736  1.0
  O  O16  1  0.250  0.179  0.412  1.0
  O  O17  1  0.507  0.488  0.203  1.0
  O  O18  1  0.494  0.070  0.802  1.0
  O  O19  1  0.007  0.512  0.797  1.0
  O  O20  1  0.750  0.750  0.967  1.0
  O  O21  1  0.250  0.749  0.972  1.0
  O  O22  1  1.000  0.673  0.391  1.0
  O  O23  1  0.000  0.327  0.609  1.0
  O  O24  1  0.006  0.070  0.802  1.0
  O  O25  1  0.750  0.174  0.412  1.0
  O  O26  1  0.250  0.250  0.033  1.0
  O  O27  1  0.993  0.488  0.203  1.0
  O  O28  1  0.500  0.327  0.609  1.0
  O  O29  1  0.500  0.673  0.391  1.0
  O  O30  1  0.750  0.251  0.028  1.0
  O  O31  1  0.250  0.826  0.588  1.0
  O  O32  1  0.994  0.930  0.198  1.0
  O  O33  1  0.506  0.930  0.198  1.0
  O  O34  1  0.750  0.821  0.588  1.0
  O  O35  1  0.493  0.512  0.797  1.0
[/CIF]
.
The material structure described by Mg3Mn3(BO5)2 crystallizes in the monoclinic P2_1/m space group. There are three inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form MgO6 octahedra that share corners with four equivalent Mn(2)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Mg(2)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 17-20°. In the second Mg site, Mg(2) is bonded to one O(5), one O(7), two equivalent O(2), and two equivalent O(3) atoms to form MgO6 octahedra that share  a cornercorner with one Mg(3)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles are 62°. In the third Mg site, Mg(3) is bonded to one O(1), one O(7), and four equivalent O(6) atoms to form MgO6 octahedra that share  a cornercorner with one Mg(2)O6 octahedra,  a cornercorner with one Mn(1)O6 octahedra, edges with two equivalent Mg(3)O6 octahedra, and edges with four equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 61-62°. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form MnO6 octahedra that share  a cornercorner with one Mg(3)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Mg(2)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 61-63°. In the second Mn site, Mn(2) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms to form MnO6 octahedra that share corners with four equivalent Mg(1)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Mg(2)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 17-20°. In the third Mn site, Mn(3) is bonded to two equivalent O(1), two equivalent O(6), and two equivalent O(7) atoms to form MnO6 octahedra that share corners with two equivalent Mg(2)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, edges with two equivalent Mn(3)O6 octahedra, and edges with four equivalent Mg(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 62-63°. B(1) is bonded in a trigonal planar geometry to one O(2), one O(3), and one O(6) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded to one Mg(3), one Mn(1), and two equivalent Mn(3) atoms to form OMgMn3 tetrahedra that share  a cornercorner with one O(4)Mg2Mn3 square pyramid, corners with two equivalent O(1)MgMn3 tetrahedra, corners with three equivalent O(7)Mg2Mn2 tetrahedra, and  an edgeedge with one O(7)Mg2Mn2 tetrahedra. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Mg(2), one Mn(1), one Mn(2), and one B(1) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Mg(2), one Mn(1), and one B(1) atom. In the fourth O site, O(4) is bonded to two equivalent Mg(1), one Mn(1), and two equivalent Mn(2) atoms to form OMg2Mn3 square pyramids that share corners with four equivalent O(4)Mg2Mn3 square pyramids,  a cornercorner with one O(1)MgMn3 tetrahedra, and edges with four equivalent O(5)Mg3Mn2 square pyramids. In the fifth O site, O(5) is bonded to one Mg(2), two equivalent Mg(1), and two equivalent Mn(2) atoms to form OMg3Mn2 square pyramids that share corners with four equivalent O(5)Mg3Mn2 square pyramids,  a cornercorner with one O(7)Mg2Mn2 tetrahedra, and edges with four equivalent O(4)Mg2Mn3 square pyramids. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Mg(3), one Mn(3), and one B(1) atom. In the seventh O site, O(7) is bonded to one Mg(2), one Mg(3), and two equivalent Mn(3) atoms to form OMg2Mn2 tetrahedra that share  a cornercorner with one O(5)Mg3Mn2 square pyramid, corners with two equivalent O(7)Mg2Mn2 tetrahedra, corners with three equivalent O(1)MgMn3 tetrahedra, and  an edgeedge with one O(1)MgMn3 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg3Mn3(BO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.089
_cell_length_b   5.508
_cell_length_c   10.947
_cell_angle_alpha   83.817
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   365.013
_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
  Mg  Mg0  1  0.000  0.000  0.000  1.0
  Mg  Mg1  1  0.250  0.795  0.774  1.0
  Mg  Mg2  1  0.750  0.205  0.226  1.0
  Mg  Mg3  1  0.500  0.000  0.000  1.0
  Mg  Mg4  1  0.250  0.504  0.501  1.0
  Mg  Mg5  1  0.750  0.496  0.499  1.0
  Mn  Mn6  1  0.750  0.797  0.772  1.0
  Mn  Mn7  1  0.250  0.203  0.228  1.0
  Mn  Mn8  1  0.500  0.500  0.000  1.0
  Mn  Mn9  1  0.500  0.000  0.500  1.0
  Mn  Mn10  1  0.000  0.000  0.500  1.0
  Mn  Mn11  1  0.000  0.500  0.000  1.0
  B  B12  1  0.004  0.302  0.736  1.0
  B  B13  1  0.996  0.698  0.264  1.0
  B  B14  1  0.504  0.698  0.264  1.0
  B  B15  1  0.496  0.302  0.736  1.0
  O  O16  1  0.250  0.179  0.412  1.0
  O  O17  1  0.507  0.488  0.203  1.0
  O  O18  1  0.494  0.070  0.802  1.0
  O  O19  1  0.007  0.512  0.797  1.0
  O  O20  1  0.750  0.750  0.967  1.0
  O  O21  1  0.250  0.749  0.972  1.0
  O  O22  1  1.000  0.673  0.391  1.0
  O  O23  1  0.000  0.327  0.609  1.0
  O  O24  1  0.006  0.070  0.802  1.0
  O  O25  1  0.750  0.174  0.412  1.0
  O  O26  1  0.250  0.250  0.033  1.0
  O  O27  1  0.993  0.488  0.203  1.0
  O  O28  1  0.500  0.327  0.609  1.0
  O  O29  1  0.500  0.673  0.391  1.0
  O  O30  1  0.750  0.251  0.028  1.0
  O  O31  1  0.250  0.826  0.588  1.0
  O  O32  1  0.994  0.930  0.198  1.0
  O  O33  1  0.506  0.930  0.198  1.0
  O  O34  1  0.750  0.821  0.588  1.0
  O  O35  1  0.493  0.512  0.797  1.0
[/CIF]
.