The crystal structure described by Rb2MgPr2(WO4)4 crystallizes in the triclinic P1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one Mg(1), one O(1), one O(10), one O(12), one O(14), one O(16), one O(2), one O(5), and one O(7) atom. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one O(1), one O(13), one O(15), one O(2), one O(6), one O(8), and one O(9) atom. Mg(1) is bonded in a 4-coordinate geometry to one Rb(1), one O(16), one O(3), one O(4), and one O(8) atom. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 7-coordinate geometry to one O(11), one O(13), one O(15), one O(5), one O(6), one O(8), and one O(9) atom. In the second Pr site, Pr(2) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(14), one O(16), one O(5), one O(6), and one O(7) atom. There are four inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(10), one O(13), one O(4), one O(7), and one O(9) atom to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 35-47°. In the second W site, W(2) is bonded to one O(10), one O(14), one O(2), one O(3), one O(8), and one O(9) atom to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 37-50°. In the third W site, W(3) is bonded to one O(11), one O(12), one O(15), one O(2), one O(3), and one O(5) atom to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 37-50°. In the fourth W site, W(4) is bonded to one O(1), one O(11), one O(12), one O(16), one O(4), and one O(6) atom to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 35-47°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one W(1), and one W(4) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one W(2), and one W(3) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mg(1), one W(2), and one W(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mg(1), one W(1), and one W(4) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Rb(1), one Pr(1), one Pr(2), and one W(3) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Rb(2), one Pr(1), one Pr(2), and one W(4) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Pr(2), and one W(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Rb(2), one Mg(1), one Pr(1), and one W(2) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Rb(2), one Pr(1), one W(1), and one W(2) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Rb(1), one Pr(2), one W(1), and one W(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one Pr(1), one W(3), and one W(4) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Rb(1), one Pr(2), one W(3), and one W(4) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Rb(2), one Pr(1), and one W(1) atom. In the fourteenth O site, O(14) is bonded in a distorted T-shaped geometry to one Rb(1), one Pr(2), and one W(2) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Rb(2), one Pr(1), and one W(3) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one Rb(1), one Mg(1), one Pr(2), and one W(4) atom. is represented by the CIF card [CIF]
data_Rb2Pr2Mg(WO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.627
_cell_length_b   8.246
_cell_length_c   7.586
_cell_angle_alpha   62.996
_cell_angle_beta   61.883
_cell_angle_gamma   87.372
_symmetry_Int_Tables_number   1
_cell_volume   366.245
_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
  Rb  Rb0  1  0.734  0.123  0.824  1.0
  Rb  Rb1  1  0.231  0.865  0.217  1.0
  Pr  Pr2  1  0.249  0.799  0.742  1.0
  Pr  Pr3  1  0.754  0.200  0.269  1.0
  Mg  Mg4  1  0.993  0.481  0.393  1.0
  W  W5  1  0.294  0.328  0.694  1.0
  W  W6  1  0.692  0.680  0.309  1.0
  W  W7  1  0.698  0.681  0.806  1.0
  W  W8  1  0.320  0.313  0.189  1.0
  O  O9  1  0.365  0.269  0.929  1.0
  O  O10  1  0.629  0.730  0.058  1.0
  O  O11  1  0.779  0.604  0.560  1.0
  O  O12  1  0.230  0.395  0.440  1.0
  O  O13  1  0.633  0.901  0.641  1.0
  O  O14  1  0.372  0.086  0.354  1.0
  O  O15  1  0.030  0.322  0.885  1.0
  O  O16  1  0.979  0.668  0.124  1.0
  O  O17  1  0.383  0.612  0.554  1.0
  O  O18  1  0.608  0.393  0.450  1.0
  O  O19  1  0.377  0.585  0.969  1.0
  O  O20  1  0.642  0.411  0.021  1.0
  O  O21  1  0.280  0.083  0.756  1.0
  O  O22  1  0.738  0.929  0.224  1.0
  O  O23  1  0.970  0.761  0.688  1.0
  O  O24  1  0.020  0.271  0.319  1.0
[/CIF]
.
The crystal structure described by Rb2MgPr2(WO4)4 crystallizes in the triclinic P1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one Mg(1), one O(1), one O(10), one O(12), one O(14), one O(16), one O(2), one O(5), and one O(7) atom. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one O(1), one O(13), one O(15), one O(2), one O(6), one O(8), and one O(9) atom. Mg(1) is bonded in a 4-coordinate geometry to one Rb(1), one O(16), one O(3), one O(4), and one O(8) atom. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 7-coordinate geometry to one O(11), one O(13), one O(15), one O(5), one O(6), one O(8), and one O(9) atom. In the second Pr site, Pr(2) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(14), one O(16), one O(5), one O(6), and one O(7) atom. There are four inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(10), one O(13), one O(4), one O(7), and one O(9) atom to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 35-47°. In the second W site, W(2) is bonded to one O(10), one O(14), one O(2), one O(3), one O(8), and one O(9) atom to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 37-50°. In the third W site, W(3) is bonded to one O(11), one O(12), one O(15), one O(2), one O(3), and one O(5) atom to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 37-50°. In the fourth W site, W(4) is bonded to one O(1), one O(11), one O(12), one O(16), one O(4), and one O(6) atom to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 35-47°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one W(1), and one W(4) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one W(2), and one W(3) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mg(1), one W(2), and one W(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mg(1), one W(1), and one W(4) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Rb(1), one Pr(1), one Pr(2), and one W(3) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Rb(2), one Pr(1), one Pr(2), and one W(4) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Pr(2), and one W(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Rb(2), one Mg(1), one Pr(1), and one W(2) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Rb(2), one Pr(1), one W(1), and one W(2) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Rb(1), one Pr(2), one W(1), and one W(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one Pr(1), one W(3), and one W(4) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Rb(1), one Pr(2), one W(3), and one W(4) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Rb(2), one Pr(1), and one W(1) atom. In the fourteenth O site, O(14) is bonded in a distorted T-shaped geometry to one Rb(1), one Pr(2), and one W(2) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Rb(2), one Pr(1), and one W(3) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one Rb(1), one Mg(1), one Pr(2), and one W(4) atom. is represented by the CIF card [CIF]
data_Rb2Pr2Mg(WO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.627
_cell_length_b   8.246
_cell_length_c   7.586
_cell_angle_alpha   62.996
_cell_angle_beta   61.883
_cell_angle_gamma   87.372
_symmetry_Int_Tables_number   1
_cell_volume   366.245
_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
  Rb  Rb0  1  0.734  0.123  0.824  1.0
  Rb  Rb1  1  0.231  0.865  0.217  1.0
  Pr  Pr2  1  0.249  0.799  0.742  1.0
  Pr  Pr3  1  0.754  0.200  0.269  1.0
  Mg  Mg4  1  0.993  0.481  0.393  1.0
  W  W5  1  0.294  0.328  0.694  1.0
  W  W6  1  0.692  0.680  0.309  1.0
  W  W7  1  0.698  0.681  0.806  1.0
  W  W8  1  0.320  0.313  0.189  1.0
  O  O9  1  0.365  0.269  0.929  1.0
  O  O10  1  0.629  0.730  0.058  1.0
  O  O11  1  0.779  0.604  0.560  1.0
  O  O12  1  0.230  0.395  0.440  1.0
  O  O13  1  0.633  0.901  0.641  1.0
  O  O14  1  0.372  0.086  0.354  1.0
  O  O15  1  0.030  0.322  0.885  1.0
  O  O16  1  0.979  0.668  0.124  1.0
  O  O17  1  0.383  0.612  0.554  1.0
  O  O18  1  0.608  0.393  0.450  1.0
  O  O19  1  0.377  0.585  0.969  1.0
  O  O20  1  0.642  0.411  0.021  1.0
  O  O21  1  0.280  0.083  0.756  1.0
  O  O22  1  0.738  0.929  0.224  1.0
  O  O23  1  0.970  0.761  0.688  1.0
  O  O24  1  0.020  0.271  0.319  1.0
[/CIF]
.