The structure described by Mn2Zn(PO4)2 crystallizes in the monoclinic C2/c space group. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form distorted MnO5 trigonal bipyramids that share corners with two equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 trigonal pyramid, and  an edgeedge with one Mn(2)O6 octahedra. In the second Mn site, Mn(2) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form distorted MnO6 octahedra that share corners with two equivalent P(2)O4 tetrahedra, corners with four equivalent P(1)O4 tetrahedra, and edges with two equivalent Mn(1)O5 trigonal bipyramids. In the third Mn site, Mn(3) is bonded to two equivalent O(5) and two equivalent O(7) atoms to form MnO4 trigonal pyramids that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and corners with two equivalent Mn(1)O5 trigonal bipyramids. Zn(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(6), and two equivalent O(8) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(4), one O(7), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(1)O5 trigonal bipyramids, and  a cornercorner with one Mn(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 42-67°. In the second P site, P(2) is bonded to one O(2), one O(3), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(2)O6 octahedra, corners with three equivalent Mn(1)O5 trigonal bipyramids, and  a cornercorner with one Mn(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 21°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mn(2), one Zn(1), and one P(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Mn(1), one Zn(1), and one P(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one P(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one P(1) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Mn(3) and one P(2) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mn(1), one Zn(1), and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(3), and one P(1) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to two equivalent Zn(1) and one P(1) atom. is represented by the CIF file [CIF]
data_Mn2Zn(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.649
_cell_length_b   8.649
_cell_length_c   17.449
_cell_angle_alpha   63.786
_cell_angle_beta   63.786
_cell_angle_gamma   33.526
_symmetry_Int_Tables_number   1
_cell_volume   639.645
_cell_formula_units_Z   4
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  0.576  0.686  0.032  1.0
  Mn  Mn1  1  0.314  0.424  0.468  1.0
  Mn  Mn2  1  0.424  0.314  0.968  1.0
  Mn  Mn3  1  0.000  0.000  0.000  1.0
  Mn  Mn4  1  0.686  0.576  0.532  1.0
  Mn  Mn5  1  0.668  0.332  0.750  1.0
  Mn  Mn6  1  0.332  0.668  0.250  1.0
  Mn  Mn7  1  0.000  0.000  0.500  1.0
  Zn  Zn8  1  0.709  0.809  0.158  1.0
  Zn  Zn9  1  0.191  0.291  0.342  1.0
  Zn  Zn10  1  0.809  0.709  0.658  1.0
  Zn  Zn11  1  0.291  0.191  0.842  1.0
  P  P12  1  0.364  0.432  0.136  1.0
  P  P13  1  0.802  0.884  0.382  1.0
  P  P14  1  0.636  0.568  0.864  1.0
  P  P15  1  0.884  0.802  0.882  1.0
  P  P16  1  0.432  0.364  0.636  1.0
  P  P17  1  0.568  0.636  0.364  1.0
  P  P18  1  0.198  0.116  0.618  1.0
  P  P19  1  0.116  0.198  0.118  1.0
  O  O20  1  0.940  0.303  0.890  1.0
  O  O21  1  0.374  0.120  0.085  1.0
  O  O22  1  0.303  0.940  0.390  1.0
  O  O23  1  0.899  0.874  0.443  1.0
  O  O24  1  0.425  0.736  0.942  1.0
  O  O25  1  0.946  0.858  0.289  1.0
  O  O26  1  0.126  0.101  0.057  1.0
  O  O27  1  0.169  0.471  0.890  1.0
  O  O28  1  0.101  0.126  0.557  1.0
  O  O29  1  0.880  0.626  0.415  1.0
  O  O30  1  0.550  0.475  0.856  1.0
  O  O31  1  0.244  0.386  0.718  1.0
  O  O32  1  0.626  0.880  0.915  1.0
  O  O33  1  0.471  0.169  0.390  1.0
  O  O34  1  0.060  0.697  0.110  1.0
  O  O35  1  0.450  0.525  0.144  1.0
  O  O36  1  0.386  0.244  0.218  1.0
  O  O37  1  0.874  0.899  0.943  1.0
  O  O38  1  0.475  0.550  0.356  1.0
  O  O39  1  0.756  0.614  0.282  1.0
  O  O40  1  0.529  0.831  0.610  1.0
  O  O41  1  0.736  0.425  0.442  1.0
  O  O42  1  0.831  0.529  0.110  1.0
  O  O43  1  0.858  0.946  0.789  1.0
  O  O44  1  0.120  0.374  0.585  1.0
  O  O45  1  0.697  0.060  0.610  1.0
  O  O46  1  0.614  0.756  0.782  1.0
  O  O47  1  0.264  0.575  0.558  1.0
  O  O48  1  0.575  0.264  0.058  1.0
  O  O49  1  0.142  0.054  0.211  1.0
  O  O50  1  0.054  0.142  0.711  1.0
  O  O51  1  0.525  0.450  0.644  1.0
[/CIF]
.
The structure described by Mn2Zn(PO4)2 crystallizes in the monoclinic C2/c space group. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form distorted MnO5 trigonal bipyramids that share corners with two equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra,  a cornercorner with one Mn(3)O4 trigonal pyramid, and  an edgeedge with one Mn(2)O6 octahedra. In the second Mn site, Mn(2) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form distorted MnO6 octahedra that share corners with two equivalent P(2)O4 tetrahedra, corners with four equivalent P(1)O4 tetrahedra, and edges with two equivalent Mn(1)O5 trigonal bipyramids. In the third Mn site, Mn(3) is bonded to two equivalent O(5) and two equivalent O(7) atoms to form MnO4 trigonal pyramids that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and corners with two equivalent Mn(1)O5 trigonal bipyramids. Zn(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(6), and two equivalent O(8) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(4), one O(7), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(1)O5 trigonal bipyramids, and  a cornercorner with one Mn(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 42-67°. In the second P site, P(2) is bonded to one O(2), one O(3), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(2)O6 octahedra, corners with three equivalent Mn(1)O5 trigonal bipyramids, and  a cornercorner with one Mn(3)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 21°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mn(2), one Zn(1), and one P(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Mn(1), one Zn(1), and one P(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one P(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one P(1) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Mn(3) and one P(2) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mn(1), one Zn(1), and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(3), and one P(1) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to two equivalent Zn(1) and one P(1) atom. is represented by the CIF file [CIF]
data_Mn2Zn(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.649
_cell_length_b   8.649
_cell_length_c   17.449
_cell_angle_alpha   63.786
_cell_angle_beta   63.786
_cell_angle_gamma   33.526
_symmetry_Int_Tables_number   1
_cell_volume   639.645
_cell_formula_units_Z   4
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  0.576  0.686  0.032  1.0
  Mn  Mn1  1  0.314  0.424  0.468  1.0
  Mn  Mn2  1  0.424  0.314  0.968  1.0
  Mn  Mn3  1  0.000  0.000  0.000  1.0
  Mn  Mn4  1  0.686  0.576  0.532  1.0
  Mn  Mn5  1  0.668  0.332  0.750  1.0
  Mn  Mn6  1  0.332  0.668  0.250  1.0
  Mn  Mn7  1  0.000  0.000  0.500  1.0
  Zn  Zn8  1  0.709  0.809  0.158  1.0
  Zn  Zn9  1  0.191  0.291  0.342  1.0
  Zn  Zn10  1  0.809  0.709  0.658  1.0
  Zn  Zn11  1  0.291  0.191  0.842  1.0
  P  P12  1  0.364  0.432  0.136  1.0
  P  P13  1  0.802  0.884  0.382  1.0
  P  P14  1  0.636  0.568  0.864  1.0
  P  P15  1  0.884  0.802  0.882  1.0
  P  P16  1  0.432  0.364  0.636  1.0
  P  P17  1  0.568  0.636  0.364  1.0
  P  P18  1  0.198  0.116  0.618  1.0
  P  P19  1  0.116  0.198  0.118  1.0
  O  O20  1  0.940  0.303  0.890  1.0
  O  O21  1  0.374  0.120  0.085  1.0
  O  O22  1  0.303  0.940  0.390  1.0
  O  O23  1  0.899  0.874  0.443  1.0
  O  O24  1  0.425  0.736  0.942  1.0
  O  O25  1  0.946  0.858  0.289  1.0
  O  O26  1  0.126  0.101  0.057  1.0
  O  O27  1  0.169  0.471  0.890  1.0
  O  O28  1  0.101  0.126  0.557  1.0
  O  O29  1  0.880  0.626  0.415  1.0
  O  O30  1  0.550  0.475  0.856  1.0
  O  O31  1  0.244  0.386  0.718  1.0
  O  O32  1  0.626  0.880  0.915  1.0
  O  O33  1  0.471  0.169  0.390  1.0
  O  O34  1  0.060  0.697  0.110  1.0
  O  O35  1  0.450  0.525  0.144  1.0
  O  O36  1  0.386  0.244  0.218  1.0
  O  O37  1  0.874  0.899  0.943  1.0
  O  O38  1  0.475  0.550  0.356  1.0
  O  O39  1  0.756  0.614  0.282  1.0
  O  O40  1  0.529  0.831  0.610  1.0
  O  O41  1  0.736  0.425  0.442  1.0
  O  O42  1  0.831  0.529  0.110  1.0
  O  O43  1  0.858  0.946  0.789  1.0
  O  O44  1  0.120  0.374  0.585  1.0
  O  O45  1  0.697  0.060  0.610  1.0
  O  O46  1  0.614  0.756  0.782  1.0
  O  O47  1  0.264  0.575  0.558  1.0
  O  O48  1  0.575  0.264  0.058  1.0
  O  O49  1  0.142  0.054  0.211  1.0
  O  O50  1  0.054  0.142  0.711  1.0
  O  O51  1  0.525  0.450  0.644  1.0
[/CIF]
.