The material described by Rb2LiNd2(WO4)4 crystallizes in the monoclinic C2 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(3), two equivalent O(5), two equivalent O(7), and two equivalent O(8) atoms. In the second Rb site, Rb(2) is bonded in a 11-coordinate geometry to one Li(1), two equivalent O(2), two equivalent O(4), two equivalent O(5), two equivalent O(6), and two equivalent O(8) atoms. Li(1) is bonded in a 2-coordinate geometry to one Rb(2), two equivalent O(5), and two equivalent O(7) atoms. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(6) atoms. In the second Nd site, Nd(2) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(3), two equivalent O(4), and two equivalent O(7) atoms. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(8) atom to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 38-39°. In the second W site, W(2) is bonded to one O(1), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 38-39°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Rb(1), one Nd(2), one W(1), and one W(2) atom to form a mixture of distorted edge and corner-sharing ORbNdW2 tetrahedra. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Rb(2), one Nd(1), and one W(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Rb(1), one Nd(1), one Nd(2), and one W(1) 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(2) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(2), one Li(1), one W(1), and one W(2) atom. In the sixth O site, O(6) is bonded to one Rb(2), one Nd(1), one W(1), and one W(2) atom to form a mixture of distorted edge and corner-sharing ORbNdW2 trigonal pyramids. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Rb(1), one Li(1), one Nd(2), and one W(2) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one W(1), and one W(2) atom. is represented by the CIF file [CIF]
data_Rb2LiNd2(WO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.844
_cell_length_b   7.844
_cell_length_c   7.505
_cell_angle_alpha   63.310
_cell_angle_beta   63.310
_cell_angle_gamma   92.611
_symmetry_Int_Tables_number   1
_cell_volume   350.507
_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  0.786  0.214  0.750  1.0
  Rb  Rb1  1  0.245  0.755  0.250  1.0
  Li  Li2  1  0.006  0.994  0.250  1.0
  Nd  Nd3  1  0.228  0.772  0.750  1.0
  Nd  Nd4  1  0.756  0.244  0.250  1.0
  W  W5  1  0.691  0.712  0.789  1.0
  W  W6  1  0.708  0.692  0.292  1.0
  W  W7  1  0.308  0.292  0.208  1.0
  W  W8  1  0.288  0.309  0.711  1.0
  O  O9  1  0.577  0.375  0.481  1.0
  O  O10  1  0.210  0.035  0.831  1.0
  O  O11  1  0.063  0.375  0.866  1.0
  O  O12  1  0.382  0.070  0.363  1.0
  O  O13  1  0.763  0.648  0.543  1.0
  O  O14  1  0.352  0.237  0.957  1.0
  O  O15  1  0.625  0.937  0.634  1.0
  O  O16  1  0.419  0.627  0.527  1.0
  O  O17  1  0.034  0.210  0.313  1.0
  O  O18  1  0.790  0.966  0.187  1.0
  O  O19  1  0.373  0.581  0.973  1.0
  O  O20  1  0.930  0.618  0.137  1.0
  O  O21  1  0.241  0.356  0.456  1.0
  O  O22  1  0.644  0.759  0.044  1.0
  O  O23  1  0.965  0.790  0.669  1.0
  O  O24  1  0.625  0.423  0.019  1.0
[/CIF]
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The material described by Rb2LiNd2(WO4)4 crystallizes in the monoclinic C2 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(3), two equivalent O(5), two equivalent O(7), and two equivalent O(8) atoms. In the second Rb site, Rb(2) is bonded in a 11-coordinate geometry to one Li(1), two equivalent O(2), two equivalent O(4), two equivalent O(5), two equivalent O(6), and two equivalent O(8) atoms. Li(1) is bonded in a 2-coordinate geometry to one Rb(2), two equivalent O(5), and two equivalent O(7) atoms. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(6) atoms. In the second Nd site, Nd(2) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(3), two equivalent O(4), and two equivalent O(7) atoms. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(8) atom to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 38-39°. In the second W site, W(2) is bonded to one O(1), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 38-39°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Rb(1), one Nd(2), one W(1), and one W(2) atom to form a mixture of distorted edge and corner-sharing ORbNdW2 tetrahedra. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Rb(2), one Nd(1), and one W(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Rb(1), one Nd(1), one Nd(2), and one W(1) 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(2) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(2), one Li(1), one W(1), and one W(2) atom. In the sixth O site, O(6) is bonded to one Rb(2), one Nd(1), one W(1), and one W(2) atom to form a mixture of distorted edge and corner-sharing ORbNdW2 trigonal pyramids. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Rb(1), one Li(1), one Nd(2), and one W(2) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one W(1), and one W(2) atom. is represented by the CIF file [CIF]
data_Rb2LiNd2(WO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.844
_cell_length_b   7.844
_cell_length_c   7.505
_cell_angle_alpha   63.310
_cell_angle_beta   63.310
_cell_angle_gamma   92.611
_symmetry_Int_Tables_number   1
_cell_volume   350.507
_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  0.786  0.214  0.750  1.0
  Rb  Rb1  1  0.245  0.755  0.250  1.0
  Li  Li2  1  0.006  0.994  0.250  1.0
  Nd  Nd3  1  0.228  0.772  0.750  1.0
  Nd  Nd4  1  0.756  0.244  0.250  1.0
  W  W5  1  0.691  0.712  0.789  1.0
  W  W6  1  0.708  0.692  0.292  1.0
  W  W7  1  0.308  0.292  0.208  1.0
  W  W8  1  0.288  0.309  0.711  1.0
  O  O9  1  0.577  0.375  0.481  1.0
  O  O10  1  0.210  0.035  0.831  1.0
  O  O11  1  0.063  0.375  0.866  1.0
  O  O12  1  0.382  0.070  0.363  1.0
  O  O13  1  0.763  0.648  0.543  1.0
  O  O14  1  0.352  0.237  0.957  1.0
  O  O15  1  0.625  0.937  0.634  1.0
  O  O16  1  0.419  0.627  0.527  1.0
  O  O17  1  0.034  0.210  0.313  1.0
  O  O18  1  0.790  0.966  0.187  1.0
  O  O19  1  0.373  0.581  0.973  1.0
  O  O20  1  0.930  0.618  0.137  1.0
  O  O21  1  0.241  0.356  0.456  1.0
  O  O22  1  0.644  0.759  0.044  1.0
  O  O23  1  0.965  0.790  0.669  1.0
  O  O24  1  0.625  0.423  0.019  1.0
[/CIF]
.