The material structure described by Mn(SO4)2 crystallizes in the trigonal R3 space group. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to three equivalent O(1) and three equivalent O(4) atoms to form MnO6 octahedra that share corners with three equivalent S(1)O4 tetrahedra and corners with three equivalent S(2)O4 tetrahedra. In the second Mn site, Mn(2) is bonded to three equivalent O(7) and three equivalent O(8) atoms to form MnO6 octahedra that share corners with three equivalent S(1)O4 tetrahedra and corners with three equivalent S(2)O4 tetrahedra. In the third Mn site, Mn(3) is bonded to three equivalent O(3) and three equivalent O(5) atoms to form MnO6 octahedra that share corners with three equivalent S(1)O4 tetrahedra and corners with three equivalent S(2)O4 tetrahedra. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(2), one O(3), one O(4), and one O(8) atom to form SO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra, and  a cornercorner with one Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 30-46°. In the second S site, S(2) is bonded to one O(1), one O(5), one O(6), and one O(7) atom to form SO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra, and  a cornercorner with one Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-45°. There are eight inequivalent O sites. In the first O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one S(1) atom. In the second O site, O(5) is bonded in a bent 150 degrees geometry to one Mn(3) and one S(2) atom. In the third O site, O(6) is bonded in a single-bond geometry to one S(2) atom. In the fourth O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Mn(2) and one S(2) atom. In the fifth O site, O(8) is bonded in a bent 150 degrees geometry to one Mn(2) and one S(1) atom. In the sixth O site, O(1) is bonded in a bent 150 degrees geometry to one Mn(1) and one S(2) atom. In the seventh O site, O(2) is bonded in a single-bond geometry to one S(1) atom. In the eighth O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Mn(3) and one S(1) atom. is represented by the CIF file [CIF]
data_Mn(SO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.853
_cell_length_b   8.853
_cell_length_c   8.853
_cell_angle_alpha   55.780
_cell_angle_beta   55.780
_cell_angle_gamma   55.780
_symmetry_Int_Tables_number   1
_cell_volume   442.647
_cell_formula_units_Z   3
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  0.352  0.352  0.352  1.0
  Mn  Mn1  1  0.644  0.644  0.644  1.0
  Mn  Mn2  1  0.848  0.848  0.848  1.0
  S  S3  1  0.036  0.467  0.747  1.0
  S  S4  1  0.467  0.747  0.036  1.0
  S  S5  1  0.747  0.036  0.467  1.0
  S  S6  1  0.254  0.955  0.536  1.0
  S  S7  1  0.536  0.254  0.955  1.0
  S  S8  1  0.955  0.536  0.254  1.0
  O  O9  1  0.106  0.524  0.295  1.0
  O  O10  1  0.295  0.106  0.524  1.0
  O  O11  1  0.005  0.339  0.948  1.0
  O  O12  1  0.524  0.295  0.106  1.0
  O  O13  1  0.022  0.664  0.707  1.0
  O  O14  1  0.236  0.385  0.613  1.0
  O  O15  1  0.385  0.613  0.236  1.0
  O  O16  1  0.339  0.948  0.005  1.0
  O  O17  1  0.613  0.236  0.385  1.0
  O  O18  1  0.048  0.978  0.681  1.0
  O  O19  1  0.290  0.969  0.351  1.0
  O  O20  1  0.351  0.290  0.969  1.0
  O  O21  1  0.664  0.707  0.022  1.0
  O  O22  1  0.707  0.022  0.664  1.0
  O  O23  1  0.948  0.005  0.339  1.0
  O  O24  1  0.380  0.756  0.642  1.0
  O  O25  1  0.681  0.048  0.978  1.0
  O  O26  1  0.642  0.380  0.756  1.0
  O  O27  1  0.756  0.642  0.380  1.0
  O  O28  1  0.969  0.351  0.290  1.0
  O  O29  1  0.499  0.679  0.895  1.0
  O  O30  1  0.978  0.681  0.048  1.0
  O  O31  1  0.679  0.895  0.499  1.0
  O  O32  1  0.895  0.499  0.679  1.0
[/CIF]
.
The material structure described by Mn(SO4)2 crystallizes in the trigonal R3 space group. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to three equivalent O(1) and three equivalent O(4) atoms to form MnO6 octahedra that share corners with three equivalent S(1)O4 tetrahedra and corners with three equivalent S(2)O4 tetrahedra. In the second Mn site, Mn(2) is bonded to three equivalent O(7) and three equivalent O(8) atoms to form MnO6 octahedra that share corners with three equivalent S(1)O4 tetrahedra and corners with three equivalent S(2)O4 tetrahedra. In the third Mn site, Mn(3) is bonded to three equivalent O(3) and three equivalent O(5) atoms to form MnO6 octahedra that share corners with three equivalent S(1)O4 tetrahedra and corners with three equivalent S(2)O4 tetrahedra. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(2), one O(3), one O(4), and one O(8) atom to form SO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra, and  a cornercorner with one Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 30-46°. In the second S site, S(2) is bonded to one O(1), one O(5), one O(6), and one O(7) atom to form SO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra, and  a cornercorner with one Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-45°. There are eight inequivalent O sites. In the first O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one S(1) atom. In the second O site, O(5) is bonded in a bent 150 degrees geometry to one Mn(3) and one S(2) atom. In the third O site, O(6) is bonded in a single-bond geometry to one S(2) atom. In the fourth O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Mn(2) and one S(2) atom. In the fifth O site, O(8) is bonded in a bent 150 degrees geometry to one Mn(2) and one S(1) atom. In the sixth O site, O(1) is bonded in a bent 150 degrees geometry to one Mn(1) and one S(2) atom. In the seventh O site, O(2) is bonded in a single-bond geometry to one S(1) atom. In the eighth O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Mn(3) and one S(1) atom. is represented by the CIF file [CIF]
data_Mn(SO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.853
_cell_length_b   8.853
_cell_length_c   8.853
_cell_angle_alpha   55.780
_cell_angle_beta   55.780
_cell_angle_gamma   55.780
_symmetry_Int_Tables_number   1
_cell_volume   442.647
_cell_formula_units_Z   3
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  0.352  0.352  0.352  1.0
  Mn  Mn1  1  0.644  0.644  0.644  1.0
  Mn  Mn2  1  0.848  0.848  0.848  1.0
  S  S3  1  0.036  0.467  0.747  1.0
  S  S4  1  0.467  0.747  0.036  1.0
  S  S5  1  0.747  0.036  0.467  1.0
  S  S6  1  0.254  0.955  0.536  1.0
  S  S7  1  0.536  0.254  0.955  1.0
  S  S8  1  0.955  0.536  0.254  1.0
  O  O9  1  0.106  0.524  0.295  1.0
  O  O10  1  0.295  0.106  0.524  1.0
  O  O11  1  0.005  0.339  0.948  1.0
  O  O12  1  0.524  0.295  0.106  1.0
  O  O13  1  0.022  0.664  0.707  1.0
  O  O14  1  0.236  0.385  0.613  1.0
  O  O15  1  0.385  0.613  0.236  1.0
  O  O16  1  0.339  0.948  0.005  1.0
  O  O17  1  0.613  0.236  0.385  1.0
  O  O18  1  0.048  0.978  0.681  1.0
  O  O19  1  0.290  0.969  0.351  1.0
  O  O20  1  0.351  0.290  0.969  1.0
  O  O21  1  0.664  0.707  0.022  1.0
  O  O22  1  0.707  0.022  0.664  1.0
  O  O23  1  0.948  0.005  0.339  1.0
  O  O24  1  0.380  0.756  0.642  1.0
  O  O25  1  0.681  0.048  0.978  1.0
  O  O26  1  0.642  0.380  0.756  1.0
  O  O27  1  0.756  0.642  0.380  1.0
  O  O28  1  0.969  0.351  0.290  1.0
  O  O29  1  0.499  0.679  0.895  1.0
  O  O30  1  0.978  0.681  0.048  1.0
  O  O31  1  0.679  0.895  0.499  1.0
  O  O32  1  0.895  0.499  0.679  1.0
[/CIF]
.