The crystal structure described by MgPr(SbO3)2 crystallizes in the orthorhombic Pmn2_1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(1), one O(4), and two equivalent O(3) atoms. Pr(1) is bonded in a 8-coordinate geometry to one O(1), one O(4), two equivalent O(2), and four equivalent O(3) atoms. Sb(1) is bonded to one O(1), one O(3), one O(4), and two equivalent O(2) atoms to form distorted corner-sharing SbO5 square pyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Pr(1), and two equivalent Sb(1) atoms to form distorted corner-sharing OPrMgSb2 trigonal pyramids. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Pr(1) and two equivalent Sb(1) atoms. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Mg(1), two equivalent Pr(1), and one Sb(1) atom. In the fourth O site, O(4) is bonded to one Mg(1), one Pr(1), and two equivalent Sb(1) atoms to form distorted corner-sharing OPrMgSb2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_PrMg(SbO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.697
_cell_length_b   6.264
_cell_length_c   8.018
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   286.113
_cell_formula_units_Z   2
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  0.017  0.671  0.000  1.0
  Pr  Pr1  1  0.517  0.329  0.500  1.0
  Mg  Mg2  1  0.512  0.219  0.000  1.0
  Mg  Mg3  1  0.012  0.781  0.500  1.0
  Sb  Sb4  1  0.017  0.222  0.754  1.0
  Sb  Sb5  1  0.017  0.222  0.246  1.0
  Sb  Sb6  1  0.517  0.778  0.254  1.0
  Sb  Sb7  1  0.517  0.778  0.746  1.0
  O  O8  1  0.145  0.141  0.500  1.0
  O  O9  1  0.155  0.939  0.815  1.0
  O  O10  1  0.155  0.939  0.185  1.0
  O  O11  1  0.318  0.386  0.181  1.0
  O  O12  1  0.318  0.386  0.819  1.0
  O  O13  1  0.358  0.696  0.500  1.0
  O  O14  1  0.645  0.859  0.000  1.0
  O  O15  1  0.655  0.061  0.685  1.0
  O  O16  1  0.655  0.061  0.315  1.0
  O  O17  1  0.818  0.614  0.681  1.0
  O  O18  1  0.818  0.614  0.319  1.0
  O  O19  1  0.858  0.304  0.000  1.0
[/CIF]
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The crystal structure described by MgPr(SbO3)2 crystallizes in the orthorhombic Pmn2_1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(1), one O(4), and two equivalent O(3) atoms. Pr(1) is bonded in a 8-coordinate geometry to one O(1), one O(4), two equivalent O(2), and four equivalent O(3) atoms. Sb(1) is bonded to one O(1), one O(3), one O(4), and two equivalent O(2) atoms to form distorted corner-sharing SbO5 square pyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Pr(1), and two equivalent Sb(1) atoms to form distorted corner-sharing OPrMgSb2 trigonal pyramids. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Pr(1) and two equivalent Sb(1) atoms. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Mg(1), two equivalent Pr(1), and one Sb(1) atom. In the fourth O site, O(4) is bonded to one Mg(1), one Pr(1), and two equivalent Sb(1) atoms to form distorted corner-sharing OPrMgSb2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_PrMg(SbO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.697
_cell_length_b   6.264
_cell_length_c   8.018
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   286.113
_cell_formula_units_Z   2
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  0.017  0.671  0.000  1.0
  Pr  Pr1  1  0.517  0.329  0.500  1.0
  Mg  Mg2  1  0.512  0.219  0.000  1.0
  Mg  Mg3  1  0.012  0.781  0.500  1.0
  Sb  Sb4  1  0.017  0.222  0.754  1.0
  Sb  Sb5  1  0.017  0.222  0.246  1.0
  Sb  Sb6  1  0.517  0.778  0.254  1.0
  Sb  Sb7  1  0.517  0.778  0.746  1.0
  O  O8  1  0.145  0.141  0.500  1.0
  O  O9  1  0.155  0.939  0.815  1.0
  O  O10  1  0.155  0.939  0.185  1.0
  O  O11  1  0.318  0.386  0.181  1.0
  O  O12  1  0.318  0.386  0.819  1.0
  O  O13  1  0.358  0.696  0.500  1.0
  O  O14  1  0.645  0.859  0.000  1.0
  O  O15  1  0.655  0.061  0.685  1.0
  O  O16  1  0.655  0.061  0.315  1.0
  O  O17  1  0.818  0.614  0.681  1.0
  O  O18  1  0.818  0.614  0.319  1.0
  O  O19  1  0.858  0.304  0.000  1.0
[/CIF]
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