The compound described by Mn2Fe3Sn(PO4)6 crystallizes in the trigonal R3 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 6-coordinate geometry to three equivalent O(2) and three equivalent O(6) atoms. In the second Mn site, Mn(2) is bonded in a 6-coordinate geometry to three equivalent O(4) and three equivalent O(7) atoms. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to three equivalent O(2) and three equivalent O(5) atoms to form FeO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. In the second Fe site, Fe(2) is bonded to three equivalent O(1) and three equivalent O(4) atoms to form FeO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. In the third Fe site, Fe(3) is bonded to three equivalent O(7) and three equivalent O(8) atoms to form FeO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. Sn(1) is bonded to three equivalent O(3) and three equivalent O(6) atoms to form SnO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, and  a cornercorner with one Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 28-49°. In the second P site, P(2) is bonded to one O(2), one O(3), one O(4), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, and  a cornercorner with one Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 25-49°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Fe(2) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(1), one Fe(1), and one P(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Sn(1) and one P(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mn(2), one Fe(2), and one P(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mn(1), one Sn(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Mn(2), one Fe(3), and one P(1) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Fe(3) and one P(2) atom. is represented by the CIF file [CIF]
data_Mn2Fe3Sn(PO4)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.675
_cell_length_b   8.675
_cell_length_c   8.675
_cell_angle_alpha   60.152
_cell_angle_beta   60.152
_cell_angle_gamma   60.152
_symmetry_Int_Tables_number   1
_cell_volume   463.242
_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  0.996  0.996  0.996  1.0
  Mn  Mn1  1  0.501  0.501  0.501  1.0
  Fe  Fe2  1  0.854  0.854  0.854  1.0
  Fe  Fe3  1  0.647  0.647  0.647  1.0
  Fe  Fe4  1  0.355  0.355  0.355  1.0
  Sn  Sn5  1  0.145  0.145  0.145  1.0
  P  P6  1  0.747  0.459  0.045  1.0
  P  P7  1  0.459  0.045  0.747  1.0
  P  P8  1  0.045  0.747  0.459  1.0
  P  P9  1  0.953  0.252  0.548  1.0
  P  P10  1  0.548  0.953  0.252  1.0
  P  P11  1  0.252  0.548  0.953  1.0
  O  O12  1  0.890  0.684  0.497  1.0
  O  O13  1  0.684  0.497  0.890  1.0
  O  O14  1  0.938  0.089  0.740  1.0
  O  O15  1  0.497  0.890  0.684  1.0
  O  O16  1  0.984  0.190  0.393  1.0
  O  O17  1  0.758  0.413  0.563  1.0
  O  O18  1  0.740  0.938  0.089  1.0
  O  O19  1  0.563  0.758  0.413  1.0
  O  O20  1  0.813  0.612  0.006  1.0
  O  O21  1  0.413  0.563  0.758  1.0
  O  O22  1  0.910  0.261  0.059  1.0
  O  O23  1  0.612  0.006  0.813  1.0
  O  O24  1  0.393  0.984  0.190  1.0
  O  O25  1  0.089  0.740  0.938  1.0
  O  O26  1  0.587  0.441  0.241  1.0
  O  O27  1  0.190  0.393  0.984  1.0
  O  O28  1  0.441  0.241  0.587  1.0
  O  O29  1  0.261  0.059  0.910  1.0
  O  O30  1  0.241  0.587  0.441  1.0
  O  O31  1  0.006  0.813  0.612  1.0
  O  O32  1  0.503  0.113  0.312  1.0
  O  O33  1  0.059  0.910  0.261  1.0
  O  O34  1  0.312  0.503  0.113  1.0
  O  O35  1  0.113  0.312  0.503  1.0
[/CIF]
.
The compound described by Mn2Fe3Sn(PO4)6 crystallizes in the trigonal R3 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 6-coordinate geometry to three equivalent O(2) and three equivalent O(6) atoms. In the second Mn site, Mn(2) is bonded in a 6-coordinate geometry to three equivalent O(4) and three equivalent O(7) atoms. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to three equivalent O(2) and three equivalent O(5) atoms to form FeO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. In the second Fe site, Fe(2) is bonded to three equivalent O(1) and three equivalent O(4) atoms to form FeO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. In the third Fe site, Fe(3) is bonded to three equivalent O(7) and three equivalent O(8) atoms to form FeO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. Sn(1) is bonded to three equivalent O(3) and three equivalent O(6) atoms to form SnO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, and  a cornercorner with one Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 28-49°. In the second P site, P(2) is bonded to one O(2), one O(3), one O(4), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, and  a cornercorner with one Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 25-49°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Fe(2) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(1), one Fe(1), and one P(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Sn(1) and one P(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mn(2), one Fe(2), and one P(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mn(1), one Sn(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Mn(2), one Fe(3), and one P(1) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Fe(3) and one P(2) atom. is represented by the CIF file [CIF]
data_Mn2Fe3Sn(PO4)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.675
_cell_length_b   8.675
_cell_length_c   8.675
_cell_angle_alpha   60.152
_cell_angle_beta   60.152
_cell_angle_gamma   60.152
_symmetry_Int_Tables_number   1
_cell_volume   463.242
_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  0.996  0.996  0.996  1.0
  Mn  Mn1  1  0.501  0.501  0.501  1.0
  Fe  Fe2  1  0.854  0.854  0.854  1.0
  Fe  Fe3  1  0.647  0.647  0.647  1.0
  Fe  Fe4  1  0.355  0.355  0.355  1.0
  Sn  Sn5  1  0.145  0.145  0.145  1.0
  P  P6  1  0.747  0.459  0.045  1.0
  P  P7  1  0.459  0.045  0.747  1.0
  P  P8  1  0.045  0.747  0.459  1.0
  P  P9  1  0.953  0.252  0.548  1.0
  P  P10  1  0.548  0.953  0.252  1.0
  P  P11  1  0.252  0.548  0.953  1.0
  O  O12  1  0.890  0.684  0.497  1.0
  O  O13  1  0.684  0.497  0.890  1.0
  O  O14  1  0.938  0.089  0.740  1.0
  O  O15  1  0.497  0.890  0.684  1.0
  O  O16  1  0.984  0.190  0.393  1.0
  O  O17  1  0.758  0.413  0.563  1.0
  O  O18  1  0.740  0.938  0.089  1.0
  O  O19  1  0.563  0.758  0.413  1.0
  O  O20  1  0.813  0.612  0.006  1.0
  O  O21  1  0.413  0.563  0.758  1.0
  O  O22  1  0.910  0.261  0.059  1.0
  O  O23  1  0.612  0.006  0.813  1.0
  O  O24  1  0.393  0.984  0.190  1.0
  O  O25  1  0.089  0.740  0.938  1.0
  O  O26  1  0.587  0.441  0.241  1.0
  O  O27  1  0.190  0.393  0.984  1.0
  O  O28  1  0.441  0.241  0.587  1.0
  O  O29  1  0.261  0.059  0.910  1.0
  O  O30  1  0.241  0.587  0.441  1.0
  O  O31  1  0.006  0.813  0.612  1.0
  O  O32  1  0.503  0.113  0.312  1.0
  O  O33  1  0.059  0.910  0.261  1.0
  O  O34  1  0.312  0.503  0.113  1.0
  O  O35  1  0.113  0.312  0.503  1.0
[/CIF]
.