The material described by MgMn4Cu2(PO4)6 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(12), one O(2), one O(20), one O(4), and one O(9) atom to form distorted MgO6 pentagonal pyramids that share  an edgeedge with one P(4)O4 tetrahedra,  an edgeedge with one P(5)O4 tetrahedra,  an edgeedge with one P(6)O4 tetrahedra, and  an edgeedge with one Mn(1)O5 trigonal bipyramid. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(14), one O(20), one O(3), one O(7), and one O(9) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(6)O4 tetrahedra, and  an edgeedge with one Mg(1)O6 pentagonal pyramid. In the second Mn site, Mn(2) is bonded in a 5-coordinate geometry to one O(10), one O(2), one O(4), one O(6), and one O(8) atom. In the third Mn site, Mn(3) is bonded to one O(17), one O(19), one O(21), one O(23), and one O(24) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, and  a cornercorner with one P(6)O4 tetrahedra. In the fourth Mn site, Mn(4) is bonded to one O(13), one O(16), one O(18), one O(22), and one O(5) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, and  a cornercorner with one P(6)O4 tetrahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 5-coordinate geometry to one O(11), one O(14), one O(18), one O(22), and one O(3) atom. In the second Cu site, Cu(2) is bonded in a 5-coordinate geometry to one O(10), one O(15), one O(17), one O(19), and one O(8) atom. There are six inequivalent P sites. In the first P site, P(1) is bonded to one O(24), one O(3), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(3)O5 trigonal bipyramid, and  a cornercorner with one Mn(4)O5 trigonal bipyramid. In the second P site, P(2) is bonded to one O(13), one O(21), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(3)O5 trigonal bipyramid, and  a cornercorner with one Mn(4)O5 trigonal bipyramid. In the third P site, P(3) is bonded to one O(10), one O(14), one O(16), and one O(23) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(3)O5 trigonal bipyramid, and  a cornercorner with one Mn(4)O5 trigonal bipyramid. In the fourth P site, P(4) is bonded to one O(11), one O(15), one O(2), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O5 trigonal bipyramid and  an edgeedge with one Mg(1)O6 pentagonal pyramid. In the fifth P site, P(5) is bonded to one O(12), one O(17), one O(18), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(3)O5 trigonal bipyramid,  a cornercorner with one Mn(4)O5 trigonal bipyramid, and  an edgeedge with one Mg(1)O6 pentagonal pyramid. In the sixth P site, P(6) is bonded to one O(1), one O(19), one O(20), and one O(22) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(3)O5 trigonal bipyramid,  a cornercorner with one Mn(4)O5 trigonal bipyramid, and  an edgeedge with one Mg(1)O6 pentagonal pyramid. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a distorted L-shaped geometry to one Mg(1) and one P(6) atom. In the second O site, O(2) is bonded in a T-shaped geometry to one Mg(1), one Mn(2), and one P(4) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(1), one Cu(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a T-shaped geometry to one Mg(1), one Mn(2), and one P(5) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Mn(4) and one P(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Mn(2) and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mn(2), one Cu(2), and one P(2) atom. In the ninth O site, O(9) is bonded in a T-shaped geometry to one Mg(1), one Mn(1), and one P(4) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Mn(2), one Cu(2), and one P(3) atom. In the eleventh O site, O(11) is bonded in a distorted bent 150 degrees geometry to one Cu(1) and one P(4) atom. In the twelfth O site, O(12) is bonded in an L-shaped geometry to one Mg(1) and one P(5) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 150 degrees geometry to one Mn(4) and one P(2) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Mn(1), one Cu(1), and one P(3) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 150 degrees geometry to one Cu(2) and one P(4) atom. In the sixteenth O site, O(16) is bonded in a bent 150 degrees geometry to one Mn(4) and one P(3) atom. In the seventeenth O site, O(17) is bonded in a distorted trigonal planar geometry to one Mn(3), one Cu(2), and one P(5) atom. In the eighteenth O site, O(18) is bonded in a 2-coordinate geometry to one Mn(4), one Cu(1), and one P(5) atom. In the nineteenth O site, O(19) is bonded in a distorted bent 120 degrees geometry to one Mn(3), one Cu(2), and one P(6) atom. In the twentieth O site, O(20) is bonded in a T-shaped geometry to one Mg(1), one Mn(1), and one P(6) atom. In the twenty-first O site, O(21) is bonded in a bent 150 degrees geometry to one Mn(3) and one P(2) atom. In the twenty-second O site, O(22) is bonded in a distorted trigonal planar geometry to one Mn(4), one Cu(1), and one P(6) atom. In the twenty-third O site, O(23) is bonded in a bent 150 degrees geometry to one Mn(3) and one P(3) atom. In the twenty-fourth O site, O(24) is bonded in a distorted bent 150 degrees geometry to one Mn(3) and one P(1) atom. is represented by the CIF file [CIF]
data_MgMn4Cu2(PO4)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.968
_cell_length_b   8.389
_cell_length_c   8.431
_cell_angle_alpha   61.096
_cell_angle_beta   56.845
_cell_angle_gamma   57.080
_symmetry_Int_Tables_number   1
_cell_volume   477.748
_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
  Mg  Mg0  1  0.253  0.216  0.278  1.0
  Mn  Mn1  1  0.113  0.156  0.111  1.0
  Mn  Mn2  1  0.381  0.388  0.349  1.0
  Mn  Mn3  1  0.676  0.647  0.630  1.0
  Mn  Mn4  1  0.822  0.874  0.851  1.0
  Cu  Cu5  1  0.982  0.990  0.002  1.0
  Cu  Cu6  1  0.518  0.498  0.510  1.0
  P  P7  1  0.022  0.761  0.426  1.0
  P  P8  1  0.475  0.074  0.741  1.0
  P  P9  1  0.749  0.468  0.033  1.0
  P  P10  1  0.252  0.536  0.964  1.0
  P  P11  1  0.549  0.928  0.268  1.0
  P  P12  1  0.956  0.231  0.569  1.0
  O  O13  1  0.097  0.277  0.541  1.0
  O  O14  1  0.308  0.470  0.136  1.0
  O  O15  1  0.056  0.919  0.217  1.0
  O  O16  1  0.471  0.116  0.337  1.0
  O  O17  1  0.927  0.863  0.588  1.0
  O  O18  1  0.203  0.615  0.440  1.0
  O  O19  1  0.295  0.058  0.889  1.0
  O  O20  1  0.437  0.285  0.585  1.0
  O  O21  1  0.199  0.361  0.025  1.0
  O  O22  1  0.599  0.465  0.244  1.0
  O  O23  1  0.093  0.729  0.965  1.0
  O  O24  1  0.410  0.951  0.224  1.0
  O  O25  1  0.582  0.066  0.823  1.0
  O  O26  1  0.899  0.259  0.031  1.0
  O  O27  1  0.408  0.542  0.768  1.0
  O  O28  1  0.831  0.607  0.979  1.0
  O  O29  1  0.583  0.731  0.432  1.0
  O  O30  1  0.726  0.925  0.098  1.0
  O  O31  1  0.776  0.397  0.583  1.0
  O  O32  1  0.031  0.165  0.381  1.0
  O  O33  1  0.568  0.912  0.639  1.0
  O  O34  1  0.929  0.061  0.763  1.0
  O  O35  1  0.665  0.527  0.895  1.0
  O  O36  1  0.916  0.676  0.436  1.0
[/CIF]
.
The material described by MgMn4Cu2(PO4)6 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(12), one O(2), one O(20), one O(4), and one O(9) atom to form distorted MgO6 pentagonal pyramids that share  an edgeedge with one P(4)O4 tetrahedra,  an edgeedge with one P(5)O4 tetrahedra,  an edgeedge with one P(6)O4 tetrahedra, and  an edgeedge with one Mn(1)O5 trigonal bipyramid. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(14), one O(20), one O(3), one O(7), and one O(9) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(6)O4 tetrahedra, and  an edgeedge with one Mg(1)O6 pentagonal pyramid. In the second Mn site, Mn(2) is bonded in a 5-coordinate geometry to one O(10), one O(2), one O(4), one O(6), and one O(8) atom. In the third Mn site, Mn(3) is bonded to one O(17), one O(19), one O(21), one O(23), and one O(24) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, and  a cornercorner with one P(6)O4 tetrahedra. In the fourth Mn site, Mn(4) is bonded to one O(13), one O(16), one O(18), one O(22), and one O(5) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, and  a cornercorner with one P(6)O4 tetrahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 5-coordinate geometry to one O(11), one O(14), one O(18), one O(22), and one O(3) atom. In the second Cu site, Cu(2) is bonded in a 5-coordinate geometry to one O(10), one O(15), one O(17), one O(19), and one O(8) atom. There are six inequivalent P sites. In the first P site, P(1) is bonded to one O(24), one O(3), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(3)O5 trigonal bipyramid, and  a cornercorner with one Mn(4)O5 trigonal bipyramid. In the second P site, P(2) is bonded to one O(13), one O(21), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(3)O5 trigonal bipyramid, and  a cornercorner with one Mn(4)O5 trigonal bipyramid. In the third P site, P(3) is bonded to one O(10), one O(14), one O(16), and one O(23) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(3)O5 trigonal bipyramid, and  a cornercorner with one Mn(4)O5 trigonal bipyramid. In the fourth P site, P(4) is bonded to one O(11), one O(15), one O(2), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O5 trigonal bipyramid and  an edgeedge with one Mg(1)O6 pentagonal pyramid. In the fifth P site, P(5) is bonded to one O(12), one O(17), one O(18), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(3)O5 trigonal bipyramid,  a cornercorner with one Mn(4)O5 trigonal bipyramid, and  an edgeedge with one Mg(1)O6 pentagonal pyramid. In the sixth P site, P(6) is bonded to one O(1), one O(19), one O(20), and one O(22) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(3)O5 trigonal bipyramid,  a cornercorner with one Mn(4)O5 trigonal bipyramid, and  an edgeedge with one Mg(1)O6 pentagonal pyramid. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a distorted L-shaped geometry to one Mg(1) and one P(6) atom. In the second O site, O(2) is bonded in a T-shaped geometry to one Mg(1), one Mn(2), and one P(4) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(1), one Cu(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a T-shaped geometry to one Mg(1), one Mn(2), and one P(5) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Mn(4) and one P(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Mn(2) and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mn(2), one Cu(2), and one P(2) atom. In the ninth O site, O(9) is bonded in a T-shaped geometry to one Mg(1), one Mn(1), and one P(4) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Mn(2), one Cu(2), and one P(3) atom. In the eleventh O site, O(11) is bonded in a distorted bent 150 degrees geometry to one Cu(1) and one P(4) atom. In the twelfth O site, O(12) is bonded in an L-shaped geometry to one Mg(1) and one P(5) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 150 degrees geometry to one Mn(4) and one P(2) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Mn(1), one Cu(1), and one P(3) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 150 degrees geometry to one Cu(2) and one P(4) atom. In the sixteenth O site, O(16) is bonded in a bent 150 degrees geometry to one Mn(4) and one P(3) atom. In the seventeenth O site, O(17) is bonded in a distorted trigonal planar geometry to one Mn(3), one Cu(2), and one P(5) atom. In the eighteenth O site, O(18) is bonded in a 2-coordinate geometry to one Mn(4), one Cu(1), and one P(5) atom. In the nineteenth O site, O(19) is bonded in a distorted bent 120 degrees geometry to one Mn(3), one Cu(2), and one P(6) atom. In the twentieth O site, O(20) is bonded in a T-shaped geometry to one Mg(1), one Mn(1), and one P(6) atom. In the twenty-first O site, O(21) is bonded in a bent 150 degrees geometry to one Mn(3) and one P(2) atom. In the twenty-second O site, O(22) is bonded in a distorted trigonal planar geometry to one Mn(4), one Cu(1), and one P(6) atom. In the twenty-third O site, O(23) is bonded in a bent 150 degrees geometry to one Mn(3) and one P(3) atom. In the twenty-fourth O site, O(24) is bonded in a distorted bent 150 degrees geometry to one Mn(3) and one P(1) atom. is represented by the CIF file [CIF]
data_MgMn4Cu2(PO4)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.968
_cell_length_b   8.389
_cell_length_c   8.431
_cell_angle_alpha   61.096
_cell_angle_beta   56.845
_cell_angle_gamma   57.080
_symmetry_Int_Tables_number   1
_cell_volume   477.748
_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
  Mg  Mg0  1  0.253  0.216  0.278  1.0
  Mn  Mn1  1  0.113  0.156  0.111  1.0
  Mn  Mn2  1  0.381  0.388  0.349  1.0
  Mn  Mn3  1  0.676  0.647  0.630  1.0
  Mn  Mn4  1  0.822  0.874  0.851  1.0
  Cu  Cu5  1  0.982  0.990  0.002  1.0
  Cu  Cu6  1  0.518  0.498  0.510  1.0
  P  P7  1  0.022  0.761  0.426  1.0
  P  P8  1  0.475  0.074  0.741  1.0
  P  P9  1  0.749  0.468  0.033  1.0
  P  P10  1  0.252  0.536  0.964  1.0
  P  P11  1  0.549  0.928  0.268  1.0
  P  P12  1  0.956  0.231  0.569  1.0
  O  O13  1  0.097  0.277  0.541  1.0
  O  O14  1  0.308  0.470  0.136  1.0
  O  O15  1  0.056  0.919  0.217  1.0
  O  O16  1  0.471  0.116  0.337  1.0
  O  O17  1  0.927  0.863  0.588  1.0
  O  O18  1  0.203  0.615  0.440  1.0
  O  O19  1  0.295  0.058  0.889  1.0
  O  O20  1  0.437  0.285  0.585  1.0
  O  O21  1  0.199  0.361  0.025  1.0
  O  O22  1  0.599  0.465  0.244  1.0
  O  O23  1  0.093  0.729  0.965  1.0
  O  O24  1  0.410  0.951  0.224  1.0
  O  O25  1  0.582  0.066  0.823  1.0
  O  O26  1  0.899  0.259  0.031  1.0
  O  O27  1  0.408  0.542  0.768  1.0
  O  O28  1  0.831  0.607  0.979  1.0
  O  O29  1  0.583  0.731  0.432  1.0
  O  O30  1  0.726  0.925  0.098  1.0
  O  O31  1  0.776  0.397  0.583  1.0
  O  O32  1  0.031  0.165  0.381  1.0
  O  O33  1  0.568  0.912  0.639  1.0
  O  O34  1  0.929  0.061  0.763  1.0
  O  O35  1  0.665  0.527  0.895  1.0
  O  O36  1  0.916  0.676  0.436  1.0
[/CIF]
.