The compound described by Rb2LiNd2(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 10-coordinate geometry to one O(1), one O(10), one O(13), one O(14), one O(16), one O(3), one O(5), one O(6), one O(7), and one O(9) atom. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to one Li(1), one O(10), one O(12), one O(15), one O(2), one O(4), one O(5), one O(6), and one O(9) atom. Li(1) is bonded in a distorted see-saw-like geometry to one Rb(2), one O(11), one O(13), one O(14), and one O(8) atom. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 7-coordinate geometry to one O(11), one O(12), one O(15), one O(2), one O(4), one O(7), and one O(8) atom. In the second Nd site, Nd(2) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(16), one O(3), one O(4), one O(7), and one O(9) atom. There are four inequivalent W sites. In the first W site, W(1) is bonded to one O(11), one O(14), one O(15), one O(16), one O(5), and one O(7) atom to form a mixture of corner and edge-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 36-39°. In the second W site, W(2) is bonded to one O(1), one O(10), one O(12), one O(14), one O(5), and one O(8) atom to form a mixture of corner and edge-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 36-39°. In the third W site, W(3) is bonded to one O(11), one O(13), one O(16), one O(4), one O(6), and one O(9) atom to form a mixture of corner and edge-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 36-38°. In the fourth W site, W(4) is bonded to one O(1), one O(13), one O(2), one O(3), one O(6), and one O(8) atom to form a mixture of corner and edge-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 36-38°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded to one Rb(1), one Nd(2), one W(2), and one W(4) atom to form distorted ORbNdW2 tetrahedra that share  an edgeedge with one O(8)LiNdW2 trigonal pyramid and  an edgeedge with one O(6)Rb2W2 trigonal pyramid. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Rb(2), one Nd(1), and one W(4) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Rb(1), one Nd(2), and one W(4) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Rb(2), one Nd(1), one Nd(2), and one W(3) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Rb(2), one W(1), and one W(2) atom. In the sixth O site, O(6) is bonded to one Rb(1), one Rb(2), one W(3), and one W(4) atom to form distorted ORb2W2 trigonal pyramids that share  a cornercorner with one O(8)LiNdW2 trigonal pyramid and  an edgeedge with one O(1)RbNdW2 tetrahedra. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Rb(1), one Nd(1), one Nd(2), and one W(1) atom. In the eighth O site, O(8) is bonded to one Li(1), one Nd(1), one W(2), and one W(4) atom to form distorted OLiNdW2 trigonal pyramids that share  a cornercorner with one O(6)Rb2W2 trigonal pyramid and  an edgeedge with one O(1)RbNdW2 tetrahedra. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one Nd(2), and one W(3) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one Nd(2), and one W(2) atom. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Nd(1), one W(1), and one W(3) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Rb(2), one Nd(1), and one W(2) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one Rb(1), one Li(1), one W(3), and one W(4) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Rb(1), one Li(1), one W(1), and one W(2) atom. In the fifteenth O site, O(15) is bonded in a distorted T-shaped geometry to one Rb(2), one Nd(1), and one W(1) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Rb(1), one Nd(2), one W(1), and one W(3) atom. is represented by the CIF file [CIF]
data_Rb2LiNd2(WO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.690
_cell_length_b   8.092
_cell_length_c   7.591
_cell_angle_alpha   62.712
_cell_angle_beta   63.039
_cell_angle_gamma   89.686
_symmetry_Int_Tables_number   1
_cell_volume   361.754
_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  0.794  0.200  0.746  1.0
  Rb  Rb1  1  0.154  0.876  0.241  1.0
  Li  Li2  1  0.364  0.613  0.249  1.0
  Nd  Nd3  1  0.250  0.788  0.737  1.0
  Nd  Nd4  1  0.757  0.209  0.257  1.0
  W  W5  1  0.690  0.690  0.794  1.0
  W  W6  1  0.707  0.681  0.294  1.0
  W  W7  1  0.312  0.293  0.203  1.0
  W  W8  1  0.297  0.311  0.703  1.0
  O  O9  1  0.600  0.384  0.457  1.0
  O  O10  1  0.248  0.053  0.794  1.0
  O  O11  1  0.049  0.338  0.877  1.0
  O  O12  1  0.393  0.070  0.355  1.0
  O  O13  1  0.743  0.623  0.566  1.0
  O  O14  1  0.378  0.266  0.923  1.0
  O  O15  1  0.629  0.918  0.636  1.0
  O  O16  1  0.399  0.621  0.517  1.0
  O  O17  1  0.039  0.227  0.302  1.0
  O  O18  1  0.768  0.936  0.207  1.0
  O  O19  1  0.372  0.592  0.985  1.0
  O  O20  1  0.956  0.654  0.126  1.0
  O  O21  1  0.242  0.358  0.454  1.0
  O  O22  1  0.635  0.742  0.059  1.0
  O  O23  1  0.958  0.765  0.698  1.0
  O  O24  1  0.632  0.417  0.025  1.0
[/CIF]
.
The compound described by Rb2LiNd2(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 10-coordinate geometry to one O(1), one O(10), one O(13), one O(14), one O(16), one O(3), one O(5), one O(6), one O(7), and one O(9) atom. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to one Li(1), one O(10), one O(12), one O(15), one O(2), one O(4), one O(5), one O(6), and one O(9) atom. Li(1) is bonded in a distorted see-saw-like geometry to one Rb(2), one O(11), one O(13), one O(14), and one O(8) atom. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 7-coordinate geometry to one O(11), one O(12), one O(15), one O(2), one O(4), one O(7), and one O(8) atom. In the second Nd site, Nd(2) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(16), one O(3), one O(4), one O(7), and one O(9) atom. There are four inequivalent W sites. In the first W site, W(1) is bonded to one O(11), one O(14), one O(15), one O(16), one O(5), and one O(7) atom to form a mixture of corner and edge-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 36-39°. In the second W site, W(2) is bonded to one O(1), one O(10), one O(12), one O(14), one O(5), and one O(8) atom to form a mixture of corner and edge-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 36-39°. In the third W site, W(3) is bonded to one O(11), one O(13), one O(16), one O(4), one O(6), and one O(9) atom to form a mixture of corner and edge-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 36-38°. In the fourth W site, W(4) is bonded to one O(1), one O(13), one O(2), one O(3), one O(6), and one O(8) atom to form a mixture of corner and edge-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 36-38°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded to one Rb(1), one Nd(2), one W(2), and one W(4) atom to form distorted ORbNdW2 tetrahedra that share  an edgeedge with one O(8)LiNdW2 trigonal pyramid and  an edgeedge with one O(6)Rb2W2 trigonal pyramid. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Rb(2), one Nd(1), and one W(4) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Rb(1), one Nd(2), and one W(4) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Rb(2), one Nd(1), one Nd(2), and one W(3) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Rb(2), one W(1), and one W(2) atom. In the sixth O site, O(6) is bonded to one Rb(1), one Rb(2), one W(3), and one W(4) atom to form distorted ORb2W2 trigonal pyramids that share  a cornercorner with one O(8)LiNdW2 trigonal pyramid and  an edgeedge with one O(1)RbNdW2 tetrahedra. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Rb(1), one Nd(1), one Nd(2), and one W(1) atom. In the eighth O site, O(8) is bonded to one Li(1), one Nd(1), one W(2), and one W(4) atom to form distorted OLiNdW2 trigonal pyramids that share  a cornercorner with one O(6)Rb2W2 trigonal pyramid and  an edgeedge with one O(1)RbNdW2 tetrahedra. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one Nd(2), and one W(3) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one Nd(2), and one W(2) atom. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Nd(1), one W(1), and one W(3) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Rb(2), one Nd(1), and one W(2) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one Rb(1), one Li(1), one W(3), and one W(4) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Rb(1), one Li(1), one W(1), and one W(2) atom. In the fifteenth O site, O(15) is bonded in a distorted T-shaped geometry to one Rb(2), one Nd(1), and one W(1) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Rb(1), one Nd(2), one W(1), and one W(3) atom. is represented by the CIF file [CIF]
data_Rb2LiNd2(WO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.690
_cell_length_b   8.092
_cell_length_c   7.591
_cell_angle_alpha   62.712
_cell_angle_beta   63.039
_cell_angle_gamma   89.686
_symmetry_Int_Tables_number   1
_cell_volume   361.754
_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  0.794  0.200  0.746  1.0
  Rb  Rb1  1  0.154  0.876  0.241  1.0
  Li  Li2  1  0.364  0.613  0.249  1.0
  Nd  Nd3  1  0.250  0.788  0.737  1.0
  Nd  Nd4  1  0.757  0.209  0.257  1.0
  W  W5  1  0.690  0.690  0.794  1.0
  W  W6  1  0.707  0.681  0.294  1.0
  W  W7  1  0.312  0.293  0.203  1.0
  W  W8  1  0.297  0.311  0.703  1.0
  O  O9  1  0.600  0.384  0.457  1.0
  O  O10  1  0.248  0.053  0.794  1.0
  O  O11  1  0.049  0.338  0.877  1.0
  O  O12  1  0.393  0.070  0.355  1.0
  O  O13  1  0.743  0.623  0.566  1.0
  O  O14  1  0.378  0.266  0.923  1.0
  O  O15  1  0.629  0.918  0.636  1.0
  O  O16  1  0.399  0.621  0.517  1.0
  O  O17  1  0.039  0.227  0.302  1.0
  O  O18  1  0.768  0.936  0.207  1.0
  O  O19  1  0.372  0.592  0.985  1.0
  O  O20  1  0.956  0.654  0.126  1.0
  O  O21  1  0.242  0.358  0.454  1.0
  O  O22  1  0.635  0.742  0.059  1.0
  O  O23  1  0.958  0.765  0.698  1.0
  O  O24  1  0.632  0.417  0.025  1.0
[/CIF]
.