The crystal structure described by MgPr(ReO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(4), one O(5), one O(6), and one O(7) atom to form distorted MgO5 trigonal bipyramids that share  a cornercorner with one Re(2)O4 tetrahedra, edges with two equivalent Pr(1)O6 octahedra,  an edgeedge with one Re(1)O4 tetrahedra, and  an edgeedge with one Re(2)O4 tetrahedra. Pr(1) is bonded to one O(1), one O(2), one O(4), one O(5), one O(7), and one O(8) atom to form PrO6 octahedra that share corners with three equivalent Re(1)O4 tetrahedra, corners with three equivalent Re(2)O4 tetrahedra, and edges with two equivalent Mg(1)O5 trigonal bipyramids. There are two inequivalent Re sites. In the first Re site, Re(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form ReO4 tetrahedra that share corners with three equivalent Pr(1)O6 octahedra and  an edgeedge with one Mg(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 14-18°. In the second Re site, Re(2) is bonded to one O(4), one O(6), one O(7), and one O(8) atom to form ReO4 tetrahedra that share corners with three equivalent Pr(1)O6 octahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 17-28°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Pr(1) and one Re(1) atom. In the second O site, O(2) is bonded in a T-shaped geometry to one Mg(1), one Pr(1), and one Re(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Re(1) atom. In the fourth O site, O(4) is bonded in a T-shaped geometry to one Mg(1), one Pr(1), and one Re(2) atom. In the fifth O site, O(5) is bonded in a T-shaped geometry to one Mg(1), one Pr(1), and one Re(1) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Mg(1) and one Re(2) atom. In the seventh O site, O(7) is bonded in a T-shaped geometry to one Mg(1), one Pr(1), and one Re(2) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Pr(1) and one Re(2) atom. is represented by the CIF card [CIF]
data_PrMg(ReO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.487
_cell_length_b   6.501
_cell_length_c   6.006
_cell_angle_alpha   90.379
_cell_angle_beta   89.689
_cell_angle_gamma   121.500
_symmetry_Int_Tables_number   1
_cell_volume   215.937
_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  0.995  0.005  0.979  1.0
  Mg  Mg1  1  0.557  0.443  0.111  1.0
  Re  Re2  1  0.319  0.680  0.320  1.0
  Re  Re3  1  0.683  0.318  0.674  1.0
  O  O4  1  0.175  0.828  0.215  1.0
  O  O5  1  0.218  0.375  0.195  1.0
  O  O6  1  0.326  0.670  0.608  1.0
  O  O7  1  0.403  0.194  0.855  1.0
  O  O8  1  0.625  0.782  0.196  1.0
  O  O9  1  0.661  0.343  0.379  1.0
  O  O10  1  0.806  0.597  0.855  1.0
  O  O11  1  0.836  0.160  0.734  1.0
[/CIF]
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The crystal structure described by MgPr(ReO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(4), one O(5), one O(6), and one O(7) atom to form distorted MgO5 trigonal bipyramids that share  a cornercorner with one Re(2)O4 tetrahedra, edges with two equivalent Pr(1)O6 octahedra,  an edgeedge with one Re(1)O4 tetrahedra, and  an edgeedge with one Re(2)O4 tetrahedra. Pr(1) is bonded to one O(1), one O(2), one O(4), one O(5), one O(7), and one O(8) atom to form PrO6 octahedra that share corners with three equivalent Re(1)O4 tetrahedra, corners with three equivalent Re(2)O4 tetrahedra, and edges with two equivalent Mg(1)O5 trigonal bipyramids. There are two inequivalent Re sites. In the first Re site, Re(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form ReO4 tetrahedra that share corners with three equivalent Pr(1)O6 octahedra and  an edgeedge with one Mg(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 14-18°. In the second Re site, Re(2) is bonded to one O(4), one O(6), one O(7), and one O(8) atom to form ReO4 tetrahedra that share corners with three equivalent Pr(1)O6 octahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 17-28°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Pr(1) and one Re(1) atom. In the second O site, O(2) is bonded in a T-shaped geometry to one Mg(1), one Pr(1), and one Re(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Re(1) atom. In the fourth O site, O(4) is bonded in a T-shaped geometry to one Mg(1), one Pr(1), and one Re(2) atom. In the fifth O site, O(5) is bonded in a T-shaped geometry to one Mg(1), one Pr(1), and one Re(1) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Mg(1) and one Re(2) atom. In the seventh O site, O(7) is bonded in a T-shaped geometry to one Mg(1), one Pr(1), and one Re(2) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Pr(1) and one Re(2) atom. is represented by the CIF card [CIF]
data_PrMg(ReO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.487
_cell_length_b   6.501
_cell_length_c   6.006
_cell_angle_alpha   90.379
_cell_angle_beta   89.689
_cell_angle_gamma   121.500
_symmetry_Int_Tables_number   1
_cell_volume   215.937
_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  0.995  0.005  0.979  1.0
  Mg  Mg1  1  0.557  0.443  0.111  1.0
  Re  Re2  1  0.319  0.680  0.320  1.0
  Re  Re3  1  0.683  0.318  0.674  1.0
  O  O4  1  0.175  0.828  0.215  1.0
  O  O5  1  0.218  0.375  0.195  1.0
  O  O6  1  0.326  0.670  0.608  1.0
  O  O7  1  0.403  0.194  0.855  1.0
  O  O8  1  0.625  0.782  0.196  1.0
  O  O9  1  0.661  0.343  0.379  1.0
  O  O10  1  0.806  0.597  0.855  1.0
  O  O11  1  0.836  0.160  0.734  1.0
[/CIF]
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