The crystal structure described by RbW3Br7 crystallizes in the monoclinic C2/c space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded to two equivalent Br(6) and four equivalent Br(7) atoms to form distorted RbBr6 pentagonal pyramids that share corners with two equivalent W(2)Br5 square pyramids, corners with four equivalent W(3)Br5 square pyramids, and edges with two equivalent Rb(1)Br6 pentagonal pyramids. In the second Rb site, Rb(2) is bonded in a square co-planar geometry to four equivalent Br(5) atoms. There are three inequivalent W sites. In the first W site, W(1) is bonded to one Br(1), one Br(2), one Br(3), one Br(4), and one Br(5) atom to form distorted edge-sharing WBr5 square pyramids. In the second W site, W(2) is bonded to one Br(1), one Br(2), one Br(3), one Br(4), and one Br(6) atom to form distorted WBr5 square pyramids that share  a cornercorner with one Rb(1)Br6 pentagonal pyramid, edges with two equivalent W(1)Br5 square pyramids, and edges with two equivalent W(3)Br5 square pyramids. In the third W site, W(3) is bonded to one Br(1), one Br(2), one Br(3), one Br(4), and one Br(7) atom to form distorted WBr5 square pyramids that share corners with two equivalent Rb(1)Br6 pentagonal pyramids, edges with two equivalent W(1)Br5 square pyramids, and edges with two equivalent W(2)Br5 square pyramids. There are seven inequivalent Br sites. In the first Br site, Br(1) is bonded in a 3-coordinate geometry to one W(1), one W(2), and one W(3) atom. In the second Br site, Br(2) is bonded in a 3-coordinate geometry to one W(1), one W(2), and one W(3) atom. In the third Br site, Br(3) is bonded in a 3-coordinate geometry to one W(1), one W(2), and one W(3) atom. In the fourth Br site, Br(4) is bonded in a 3-coordinate geometry to one W(1), one W(2), and one W(3) atom. In the fifth Br site, Br(5) is bonded in a trigonal non-coplanar geometry to two equivalent Rb(2) and one W(1) atom. In the sixth Br site, Br(6) is bonded in a bent 120 degrees geometry to one Rb(1) and one W(2) atom. In the seventh Br site, Br(7) is bonded in a distorted trigonal planar geometry to two equivalent Rb(1) and one W(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbW3Br7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.006
_cell_length_b   13.006
_cell_length_c   9.955
_cell_angle_alpha   69.486
_cell_angle_beta   69.486
_cell_angle_gamma   74.412
_symmetry_Int_Tables_number   1
_cell_volume   1456.559
_cell_formula_units_Z   4
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  0.432  0.568  0.250  1.0
  Rb  Rb1  1  0.568  0.432  0.750  1.0
  Rb  Rb2  1  0.000  0.000  0.000  1.0
  Rb  Rb3  1  0.000  0.000  0.500  1.0
  W  W4  1  0.046  0.347  0.054  1.0
  W  W5  1  0.653  0.954  0.446  1.0
  W  W6  1  0.954  0.653  0.946  1.0
  W  W7  1  0.347  0.046  0.554  1.0
  W  W8  1  0.067  0.513  0.130  1.0
  W  W9  1  0.487  0.933  0.370  1.0
  W  W10  1  0.933  0.487  0.870  1.0
  W  W11  1  0.513  0.067  0.630  1.0
  W  W12  1  0.868  0.484  0.153  1.0
  W  W13  1  0.516  0.132  0.347  1.0
  W  W14  1  0.132  0.516  0.847  1.0
  W  W15  1  0.484  0.868  0.653  1.0
  Br  Br16  1  0.847  0.315  0.076  1.0
  Br  Br17  1  0.685  0.153  0.424  1.0
  Br  Br18  1  0.153  0.685  0.924  1.0
  Br  Br19  1  0.315  0.847  0.576  1.0
  Br  Br20  1  0.888  0.650  0.230  1.0
  Br  Br21  1  0.350  0.112  0.270  1.0
  Br  Br22  1  0.112  0.350  0.770  1.0
  Br  Br23  1  0.650  0.888  0.730  1.0
  Br  Br24  1  0.247  0.375  0.030  1.0
  Br  Br25  1  0.625  0.753  0.470  1.0
  Br  Br26  1  0.753  0.625  0.970  1.0
  Br  Br27  1  0.375  0.247  0.530  1.0
  Br  Br28  1  0.979  0.342  0.341  1.0
  Br  Br29  1  0.658  0.021  0.159  1.0
  Br  Br30  1  0.021  0.658  0.659  1.0
  Br  Br31  1  0.342  0.979  0.841  1.0
  Br  Br32  1  0.113  0.129  0.133  1.0
  Br  Br33  1  0.871  0.887  0.367  1.0
  Br  Br34  1  0.887  0.871  0.867  1.0
  Br  Br35  1  0.129  0.113  0.633  1.0
  Br  Br36  1  0.160  0.531  0.312  1.0
  Br  Br37  1  0.469  0.840  0.188  1.0
  Br  Br38  1  0.840  0.469  0.688  1.0
  Br  Br39  1  0.531  0.160  0.812  1.0
  Br  Br40  1  0.679  0.462  0.367  1.0
  Br  Br41  1  0.538  0.321  0.133  1.0
  Br  Br42  1  0.321  0.538  0.633  1.0
  Br  Br43  1  0.462  0.679  0.867  1.0
[/CIF]
.
The crystal structure described by RbW3Br7 crystallizes in the monoclinic C2/c space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded to two equivalent Br(6) and four equivalent Br(7) atoms to form distorted RbBr6 pentagonal pyramids that share corners with two equivalent W(2)Br5 square pyramids, corners with four equivalent W(3)Br5 square pyramids, and edges with two equivalent Rb(1)Br6 pentagonal pyramids. In the second Rb site, Rb(2) is bonded in a square co-planar geometry to four equivalent Br(5) atoms. There are three inequivalent W sites. In the first W site, W(1) is bonded to one Br(1), one Br(2), one Br(3), one Br(4), and one Br(5) atom to form distorted edge-sharing WBr5 square pyramids. In the second W site, W(2) is bonded to one Br(1), one Br(2), one Br(3), one Br(4), and one Br(6) atom to form distorted WBr5 square pyramids that share  a cornercorner with one Rb(1)Br6 pentagonal pyramid, edges with two equivalent W(1)Br5 square pyramids, and edges with two equivalent W(3)Br5 square pyramids. In the third W site, W(3) is bonded to one Br(1), one Br(2), one Br(3), one Br(4), and one Br(7) atom to form distorted WBr5 square pyramids that share corners with two equivalent Rb(1)Br6 pentagonal pyramids, edges with two equivalent W(1)Br5 square pyramids, and edges with two equivalent W(2)Br5 square pyramids. There are seven inequivalent Br sites. In the first Br site, Br(1) is bonded in a 3-coordinate geometry to one W(1), one W(2), and one W(3) atom. In the second Br site, Br(2) is bonded in a 3-coordinate geometry to one W(1), one W(2), and one W(3) atom. In the third Br site, Br(3) is bonded in a 3-coordinate geometry to one W(1), one W(2), and one W(3) atom. In the fourth Br site, Br(4) is bonded in a 3-coordinate geometry to one W(1), one W(2), and one W(3) atom. In the fifth Br site, Br(5) is bonded in a trigonal non-coplanar geometry to two equivalent Rb(2) and one W(1) atom. In the sixth Br site, Br(6) is bonded in a bent 120 degrees geometry to one Rb(1) and one W(2) atom. In the seventh Br site, Br(7) is bonded in a distorted trigonal planar geometry to two equivalent Rb(1) and one W(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbW3Br7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.006
_cell_length_b   13.006
_cell_length_c   9.955
_cell_angle_alpha   69.486
_cell_angle_beta   69.486
_cell_angle_gamma   74.412
_symmetry_Int_Tables_number   1
_cell_volume   1456.559
_cell_formula_units_Z   4
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  0.432  0.568  0.250  1.0
  Rb  Rb1  1  0.568  0.432  0.750  1.0
  Rb  Rb2  1  0.000  0.000  0.000  1.0
  Rb  Rb3  1  0.000  0.000  0.500  1.0
  W  W4  1  0.046  0.347  0.054  1.0
  W  W5  1  0.653  0.954  0.446  1.0
  W  W6  1  0.954  0.653  0.946  1.0
  W  W7  1  0.347  0.046  0.554  1.0
  W  W8  1  0.067  0.513  0.130  1.0
  W  W9  1  0.487  0.933  0.370  1.0
  W  W10  1  0.933  0.487  0.870  1.0
  W  W11  1  0.513  0.067  0.630  1.0
  W  W12  1  0.868  0.484  0.153  1.0
  W  W13  1  0.516  0.132  0.347  1.0
  W  W14  1  0.132  0.516  0.847  1.0
  W  W15  1  0.484  0.868  0.653  1.0
  Br  Br16  1  0.847  0.315  0.076  1.0
  Br  Br17  1  0.685  0.153  0.424  1.0
  Br  Br18  1  0.153  0.685  0.924  1.0
  Br  Br19  1  0.315  0.847  0.576  1.0
  Br  Br20  1  0.888  0.650  0.230  1.0
  Br  Br21  1  0.350  0.112  0.270  1.0
  Br  Br22  1  0.112  0.350  0.770  1.0
  Br  Br23  1  0.650  0.888  0.730  1.0
  Br  Br24  1  0.247  0.375  0.030  1.0
  Br  Br25  1  0.625  0.753  0.470  1.0
  Br  Br26  1  0.753  0.625  0.970  1.0
  Br  Br27  1  0.375  0.247  0.530  1.0
  Br  Br28  1  0.979  0.342  0.341  1.0
  Br  Br29  1  0.658  0.021  0.159  1.0
  Br  Br30  1  0.021  0.658  0.659  1.0
  Br  Br31  1  0.342  0.979  0.841  1.0
  Br  Br32  1  0.113  0.129  0.133  1.0
  Br  Br33  1  0.871  0.887  0.367  1.0
  Br  Br34  1  0.887  0.871  0.867  1.0
  Br  Br35  1  0.129  0.113  0.633  1.0
  Br  Br36  1  0.160  0.531  0.312  1.0
  Br  Br37  1  0.469  0.840  0.188  1.0
  Br  Br38  1  0.840  0.469  0.688  1.0
  Br  Br39  1  0.531  0.160  0.812  1.0
  Br  Br40  1  0.679  0.462  0.367  1.0
  Br  Br41  1  0.538  0.321  0.133  1.0
  Br  Br42  1  0.321  0.538  0.633  1.0
  Br  Br43  1  0.462  0.679  0.867  1.0
[/CIF]
.