The crystal structure described by MgPr2Mn2(GeO5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(3), one O(5), and one O(9) atom to form MgO4 tetrahedra that share corners with two equivalent Pr(1)O7 pentagonal bipyramids, corners with two equivalent Pr(2)O7 pentagonal bipyramids, corners with two equivalent Ge(2)O4 tetrahedra, and  an edgeedge with one Mn(2)O4 trigonal pyramid. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to one O(2), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form distorted PrO7 pentagonal bipyramids that share  a cornercorner with one Ge(2)O4 tetrahedra, corners with two equivalent Mg(1)O4 tetrahedra, corners with three equivalent Ge(1)O4 tetrahedra, corners with two equivalent Mn(2)O4 trigonal pyramids, edges with two equivalent Pr(2)O7 pentagonal bipyramids, and  an edgeedge with one Ge(2)O4 tetrahedra. In the second Pr site, Pr(2) is bonded to one O(1), one O(10), one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form distorted PrO7 pentagonal bipyramids that share  a cornercorner with one Ge(1)O4 tetrahedra, corners with two equivalent Mg(1)O4 tetrahedra, corners with three equivalent Ge(2)O4 tetrahedra, corners with two equivalent Mn(2)O4 trigonal pyramids, edges with two equivalent Pr(1)O7 pentagonal bipyramids, and  an edgeedge with one Ge(1)O4 tetrahedra. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(6), one O(7), and one O(9) atom. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(8), and one O(9) atom to form distorted MnO4 trigonal pyramids that share corners with two equivalent Pr(1)O7 pentagonal bipyramids, corners with two equivalent Pr(2)O7 pentagonal bipyramids, corners with two equivalent Ge(1)O4 tetrahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(10), one O(4), one O(7), and one O(8) atom to form GeO4 tetrahedra that share  a cornercorner with one Pr(2)O7 pentagonal bipyramid, corners with three equivalent Pr(1)O7 pentagonal bipyramids, corners with two equivalent Mn(2)O4 trigonal pyramids, and  an edgeedge with one Pr(2)O7 pentagonal bipyramid. In the second Ge site, Ge(2) is bonded to one O(2), one O(3), one O(5), and one O(6) atom to form GeO4 tetrahedra that share  a cornercorner with one Pr(1)O7 pentagonal bipyramid, corners with three equivalent Pr(2)O7 pentagonal bipyramids, corners with two equivalent Mg(1)O4 tetrahedra, and  an edgeedge with one Pr(1)O7 pentagonal bipyramid. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Pr(2), one Mn(1), and one Mn(2) atom to form distorted OPrMgMn2 tetrahedra that share  a cornercorner with one O(9)PrMgMn2 tetrahedra, corners with two equivalent O(6)Pr2MnGe tetrahedra,  an edgeedge with one O(7)Pr2MnGe tetrahedra, and  an edgeedge with one O(9)PrMgMn2 tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Pr(1), one Pr(2), and one Ge(2) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mg(1), one Pr(2), and one Ge(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Pr(1), one Pr(2), and one Ge(1) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Mg(1), one Pr(1), and one Ge(2) atom. In the sixth O site, O(6) is bonded to one Pr(1), one Pr(2), one Mn(1), and one Ge(2) atom to form distorted OPr2MnGe tetrahedra that share  a cornercorner with one O(7)Pr2MnGe tetrahedra, corners with two equivalent O(1)PrMgMn2 tetrahedra,  an edgeedge with one O(7)Pr2MnGe tetrahedra, and  an edgeedge with one O(9)PrMgMn2 tetrahedra. In the seventh O site, O(7) is bonded to one Pr(1), one Pr(2), one Mn(1), and one Ge(1) atom to form distorted OPr2MnGe tetrahedra that share  a cornercorner with one O(6)Pr2MnGe tetrahedra, corners with two equivalent O(9)PrMgMn2 tetrahedra,  an edgeedge with one O(6)Pr2MnGe tetrahedra, and  an edgeedge with one O(1)PrMgMn2 tetrahedra. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Pr(1), one Mn(2), and one Ge(1) atom. In the ninth O site, O(9) is bonded to one Mg(1), one Pr(1), one Mn(1), and one Mn(2) atom to form distorted OPrMgMn2 tetrahedra that share  a cornercorner with one O(1)PrMgMn2 tetrahedra, corners with two equivalent O(7)Pr2MnGe tetrahedra,  an edgeedge with one O(6)Pr2MnGe tetrahedra, and  an edgeedge with one O(1)PrMgMn2 tetrahedra. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Pr(2), one Mn(2), and one Ge(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pr2MgMn2(GeO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.822
_cell_length_b   6.325
_cell_length_c   6.892
_cell_angle_alpha   88.629
_cell_angle_beta   99.271
_cell_angle_gamma   105.798
_symmetry_Int_Tables_number   1
_cell_volume   240.971
_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
  Pr  Pr0  1  0.346  0.194  0.826  1.0
  Pr  Pr1  1  0.626  0.759  0.185  1.0
  Mg  Mg2  1  0.811  0.282  0.468  1.0
  Mn  Mn3  1  0.982  0.471  0.000  1.0
  Mn  Mn4  1  0.164  0.672  0.534  1.0
  Ge  Ge5  1  0.730  0.801  0.734  1.0
  Ge  Ge6  1  0.247  0.156  0.282  1.0
  O  O7  1  0.899  0.544  0.293  1.0
  O  O8  1  0.309  0.963  0.130  1.0
  O  O9  1  0.941  0.082  0.320  1.0
  O  O10  1  0.667  0.993  0.885  1.0
  O  O11  1  0.462  0.212  0.500  1.0
  O  O12  1  0.299  0.396  0.128  1.0
  O  O13  1  0.667  0.558  0.882  1.0
  O  O14  1  0.037  0.870  0.705  1.0
  O  O15  1  0.057  0.392  0.710  1.0
  O  O16  1  0.527  0.749  0.510  1.0
[/CIF]
.
The crystal structure described by MgPr2Mn2(GeO5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(3), one O(5), and one O(9) atom to form MgO4 tetrahedra that share corners with two equivalent Pr(1)O7 pentagonal bipyramids, corners with two equivalent Pr(2)O7 pentagonal bipyramids, corners with two equivalent Ge(2)O4 tetrahedra, and  an edgeedge with one Mn(2)O4 trigonal pyramid. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to one O(2), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form distorted PrO7 pentagonal bipyramids that share  a cornercorner with one Ge(2)O4 tetrahedra, corners with two equivalent Mg(1)O4 tetrahedra, corners with three equivalent Ge(1)O4 tetrahedra, corners with two equivalent Mn(2)O4 trigonal pyramids, edges with two equivalent Pr(2)O7 pentagonal bipyramids, and  an edgeedge with one Ge(2)O4 tetrahedra. In the second Pr site, Pr(2) is bonded to one O(1), one O(10), one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form distorted PrO7 pentagonal bipyramids that share  a cornercorner with one Ge(1)O4 tetrahedra, corners with two equivalent Mg(1)O4 tetrahedra, corners with three equivalent Ge(2)O4 tetrahedra, corners with two equivalent Mn(2)O4 trigonal pyramids, edges with two equivalent Pr(1)O7 pentagonal bipyramids, and  an edgeedge with one Ge(1)O4 tetrahedra. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(6), one O(7), and one O(9) atom. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(8), and one O(9) atom to form distorted MnO4 trigonal pyramids that share corners with two equivalent Pr(1)O7 pentagonal bipyramids, corners with two equivalent Pr(2)O7 pentagonal bipyramids, corners with two equivalent Ge(1)O4 tetrahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(10), one O(4), one O(7), and one O(8) atom to form GeO4 tetrahedra that share  a cornercorner with one Pr(2)O7 pentagonal bipyramid, corners with three equivalent Pr(1)O7 pentagonal bipyramids, corners with two equivalent Mn(2)O4 trigonal pyramids, and  an edgeedge with one Pr(2)O7 pentagonal bipyramid. In the second Ge site, Ge(2) is bonded to one O(2), one O(3), one O(5), and one O(6) atom to form GeO4 tetrahedra that share  a cornercorner with one Pr(1)O7 pentagonal bipyramid, corners with three equivalent Pr(2)O7 pentagonal bipyramids, corners with two equivalent Mg(1)O4 tetrahedra, and  an edgeedge with one Pr(1)O7 pentagonal bipyramid. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Pr(2), one Mn(1), and one Mn(2) atom to form distorted OPrMgMn2 tetrahedra that share  a cornercorner with one O(9)PrMgMn2 tetrahedra, corners with two equivalent O(6)Pr2MnGe tetrahedra,  an edgeedge with one O(7)Pr2MnGe tetrahedra, and  an edgeedge with one O(9)PrMgMn2 tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Pr(1), one Pr(2), and one Ge(2) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mg(1), one Pr(2), and one Ge(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Pr(1), one Pr(2), and one Ge(1) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Mg(1), one Pr(1), and one Ge(2) atom. In the sixth O site, O(6) is bonded to one Pr(1), one Pr(2), one Mn(1), and one Ge(2) atom to form distorted OPr2MnGe tetrahedra that share  a cornercorner with one O(7)Pr2MnGe tetrahedra, corners with two equivalent O(1)PrMgMn2 tetrahedra,  an edgeedge with one O(7)Pr2MnGe tetrahedra, and  an edgeedge with one O(9)PrMgMn2 tetrahedra. In the seventh O site, O(7) is bonded to one Pr(1), one Pr(2), one Mn(1), and one Ge(1) atom to form distorted OPr2MnGe tetrahedra that share  a cornercorner with one O(6)Pr2MnGe tetrahedra, corners with two equivalent O(9)PrMgMn2 tetrahedra,  an edgeedge with one O(6)Pr2MnGe tetrahedra, and  an edgeedge with one O(1)PrMgMn2 tetrahedra. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Pr(1), one Mn(2), and one Ge(1) atom. In the ninth O site, O(9) is bonded to one Mg(1), one Pr(1), one Mn(1), and one Mn(2) atom to form distorted OPrMgMn2 tetrahedra that share  a cornercorner with one O(1)PrMgMn2 tetrahedra, corners with two equivalent O(7)Pr2MnGe tetrahedra,  an edgeedge with one O(6)Pr2MnGe tetrahedra, and  an edgeedge with one O(1)PrMgMn2 tetrahedra. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Pr(2), one Mn(2), and one Ge(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pr2MgMn2(GeO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.822
_cell_length_b   6.325
_cell_length_c   6.892
_cell_angle_alpha   88.629
_cell_angle_beta   99.271
_cell_angle_gamma   105.798
_symmetry_Int_Tables_number   1
_cell_volume   240.971
_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
  Pr  Pr0  1  0.346  0.194  0.826  1.0
  Pr  Pr1  1  0.626  0.759  0.185  1.0
  Mg  Mg2  1  0.811  0.282  0.468  1.0
  Mn  Mn3  1  0.982  0.471  0.000  1.0
  Mn  Mn4  1  0.164  0.672  0.534  1.0
  Ge  Ge5  1  0.730  0.801  0.734  1.0
  Ge  Ge6  1  0.247  0.156  0.282  1.0
  O  O7  1  0.899  0.544  0.293  1.0
  O  O8  1  0.309  0.963  0.130  1.0
  O  O9  1  0.941  0.082  0.320  1.0
  O  O10  1  0.667  0.993  0.885  1.0
  O  O11  1  0.462  0.212  0.500  1.0
  O  O12  1  0.299  0.396  0.128  1.0
  O  O13  1  0.667  0.558  0.882  1.0
  O  O14  1  0.037  0.870  0.705  1.0
  O  O15  1  0.057  0.392  0.710  1.0
  O  O16  1  0.527  0.749  0.510  1.0
[/CIF]
.