The compound described by Mn2Sn(PO4)3 crystallizes in the trigonal R-3c space group. Mn(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form distorted MnO6 pentagonal pyramids that share corners with six equivalent P(1)O4 tetrahedra and  a faceface with one Sn(1)O6 octahedra. Sn(1) is bonded to six equivalent O(2) atoms to form distorted SnO6 octahedra that share corners with six equivalent P(1)O4 tetrahedra and faces with two equivalent Mn(1)O6 pentagonal pyramids. P(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra and corners with four equivalent Mn(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 38°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(1), one Sn(1), and one P(1) atom. is represented by the CIF card [CIF]
data_Mn2Sn(PO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.599
_cell_length_b   8.599
_cell_length_c   8.599
_cell_angle_alpha   61.670
_cell_angle_beta   61.670
_cell_angle_gamma   61.670
_symmetry_Int_Tables_number   1
_cell_volume   466.494
_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  0.151  0.151  0.151  1.0
  Mn  Mn1  1  0.349  0.349  0.349  1.0
  Mn  Mn2  1  0.651  0.651  0.651  1.0
  Mn  Mn3  1  0.849  0.849  0.849  1.0
  Sn  Sn4  1  0.000  0.000  0.000  1.0
  Sn  Sn5  1  0.500  0.500  0.500  1.0
  P  P6  1  0.750  0.052  0.448  1.0
  P  P7  1  0.052  0.448  0.750  1.0
  P  P8  1  0.448  0.750  0.052  1.0
  P  P9  1  0.552  0.250  0.948  1.0
  P  P10  1  0.948  0.552  0.250  1.0
  P  P11  1  0.250  0.948  0.552  1.0
  O  O12  1  0.323  0.095  0.515  1.0
  O  O13  1  0.515  0.323  0.095  1.0
  O  O14  1  0.902  0.071  0.245  1.0
  O  O15  1  0.095  0.515  0.323  1.0
  O  O16  1  0.823  0.015  0.595  1.0
  O  O17  1  0.598  0.255  0.429  1.0
  O  O18  1  0.071  0.245  0.902  1.0
  O  O19  1  0.255  0.429  0.598  1.0
  O  O20  1  0.405  0.177  0.985  1.0
  O  O21  1  0.429  0.598  0.255  1.0
  O  O22  1  0.755  0.098  0.929  1.0
  O  O23  1  0.985  0.405  0.177  1.0
  O  O24  1  0.015  0.595  0.823  1.0
  O  O25  1  0.245  0.902  0.071  1.0
  O  O26  1  0.571  0.402  0.745  1.0
  O  O27  1  0.595  0.823  0.015  1.0
  O  O28  1  0.745  0.571  0.402  1.0
  O  O29  1  0.929  0.755  0.098  1.0
  O  O30  1  0.402  0.745  0.571  1.0
  O  O31  1  0.177  0.985  0.405  1.0
  O  O32  1  0.905  0.485  0.677  1.0
  O  O33  1  0.098  0.929  0.755  1.0
  O  O34  1  0.485  0.677  0.905  1.0
  O  O35  1  0.677  0.905  0.485  1.0
[/CIF]
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The compound described by Mn2Sn(PO4)3 crystallizes in the trigonal R-3c space group. Mn(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form distorted MnO6 pentagonal pyramids that share corners with six equivalent P(1)O4 tetrahedra and  a faceface with one Sn(1)O6 octahedra. Sn(1) is bonded to six equivalent O(2) atoms to form distorted SnO6 octahedra that share corners with six equivalent P(1)O4 tetrahedra and faces with two equivalent Mn(1)O6 pentagonal pyramids. P(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra and corners with four equivalent Mn(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 38°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(1), one Sn(1), and one P(1) atom. is represented by the CIF card [CIF]
data_Mn2Sn(PO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.599
_cell_length_b   8.599
_cell_length_c   8.599
_cell_angle_alpha   61.670
_cell_angle_beta   61.670
_cell_angle_gamma   61.670
_symmetry_Int_Tables_number   1
_cell_volume   466.494
_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  0.151  0.151  0.151  1.0
  Mn  Mn1  1  0.349  0.349  0.349  1.0
  Mn  Mn2  1  0.651  0.651  0.651  1.0
  Mn  Mn3  1  0.849  0.849  0.849  1.0
  Sn  Sn4  1  0.000  0.000  0.000  1.0
  Sn  Sn5  1  0.500  0.500  0.500  1.0
  P  P6  1  0.750  0.052  0.448  1.0
  P  P7  1  0.052  0.448  0.750  1.0
  P  P8  1  0.448  0.750  0.052  1.0
  P  P9  1  0.552  0.250  0.948  1.0
  P  P10  1  0.948  0.552  0.250  1.0
  P  P11  1  0.250  0.948  0.552  1.0
  O  O12  1  0.323  0.095  0.515  1.0
  O  O13  1  0.515  0.323  0.095  1.0
  O  O14  1  0.902  0.071  0.245  1.0
  O  O15  1  0.095  0.515  0.323  1.0
  O  O16  1  0.823  0.015  0.595  1.0
  O  O17  1  0.598  0.255  0.429  1.0
  O  O18  1  0.071  0.245  0.902  1.0
  O  O19  1  0.255  0.429  0.598  1.0
  O  O20  1  0.405  0.177  0.985  1.0
  O  O21  1  0.429  0.598  0.255  1.0
  O  O22  1  0.755  0.098  0.929  1.0
  O  O23  1  0.985  0.405  0.177  1.0
  O  O24  1  0.015  0.595  0.823  1.0
  O  O25  1  0.245  0.902  0.071  1.0
  O  O26  1  0.571  0.402  0.745  1.0
  O  O27  1  0.595  0.823  0.015  1.0
  O  O28  1  0.745  0.571  0.402  1.0
  O  O29  1  0.929  0.755  0.098  1.0
  O  O30  1  0.402  0.745  0.571  1.0
  O  O31  1  0.177  0.985  0.405  1.0
  O  O32  1  0.905  0.485  0.677  1.0
  O  O33  1  0.098  0.929  0.755  1.0
  O  O34  1  0.485  0.677  0.905  1.0
  O  O35  1  0.677  0.905  0.485  1.0
[/CIF]
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