The structure described by RbGa7 crystallizes in the trigonal R-3m space group. Rb(1) is bonded in a 15-coordinate geometry to three equivalent Ga(1), three equivalent Ga(2), and nine equivalent Ga(3) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(2) is bonded in a 8-coordinate geometry to one Rb(1), three equivalent Ga(3), and four equivalent Ga(2) atoms. In the second Ga site, Ga(1) is bonded in a 7-coordinate geometry to three equivalent Rb(1), one Ga(1), and three equivalent Ga(3) atoms. In the third Ga site, Ga(3) is bonded in a 9-coordinate geometry to three equivalent Rb(1), one Ga(1), two equivalent Ga(3), and three equivalent Ga(2) atoms. is represented by the CIF file [CIF]
data_RbGa7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.216
_cell_length_b   10.216
_cell_length_c   10.216
_cell_angle_alpha   37.848
_cell_angle_beta   37.848
_cell_angle_gamma   37.848
_symmetry_Int_Tables_number   1
_cell_volume   360.203
_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
  Rb  Rb0  1  0.195  0.195  0.195  1.0
  Rb  Rb1  1  0.805  0.805  0.805  1.0
  Ga  Ga2  1  0.455  0.455  0.455  1.0
  Ga  Ga3  1  0.545  0.545  0.545  1.0
  Ga  Ga4  1  0.182  0.580  0.182  1.0
  Ga  Ga5  1  0.182  0.182  0.580  1.0
  Ga  Ga6  1  0.580  0.182  0.182  1.0
  Ga  Ga7  1  0.420  0.818  0.818  1.0
  Ga  Ga8  1  0.818  0.420  0.818  1.0
  Ga  Ga9  1  0.818  0.818  0.420  1.0
  Ga  Ga10  1  0.216  0.798  0.216  1.0
  Ga  Ga11  1  0.216  0.216  0.798  1.0
  Ga  Ga12  1  0.798  0.216  0.216  1.0
  Ga  Ga13  1  0.202  0.784  0.784  1.0
  Ga  Ga14  1  0.784  0.202  0.784  1.0
  Ga  Ga15  1  0.784  0.784  0.202  1.0
[/CIF]
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The structure described by RbGa7 crystallizes in the trigonal R-3m space group. Rb(1) is bonded in a 15-coordinate geometry to three equivalent Ga(1), three equivalent Ga(2), and nine equivalent Ga(3) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(2) is bonded in a 8-coordinate geometry to one Rb(1), three equivalent Ga(3), and four equivalent Ga(2) atoms. In the second Ga site, Ga(1) is bonded in a 7-coordinate geometry to three equivalent Rb(1), one Ga(1), and three equivalent Ga(3) atoms. In the third Ga site, Ga(3) is bonded in a 9-coordinate geometry to three equivalent Rb(1), one Ga(1), two equivalent Ga(3), and three equivalent Ga(2) atoms. is represented by the CIF file [CIF]
data_RbGa7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.216
_cell_length_b   10.216
_cell_length_c   10.216
_cell_angle_alpha   37.848
_cell_angle_beta   37.848
_cell_angle_gamma   37.848
_symmetry_Int_Tables_number   1
_cell_volume   360.203
_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
  Rb  Rb0  1  0.195  0.195  0.195  1.0
  Rb  Rb1  1  0.805  0.805  0.805  1.0
  Ga  Ga2  1  0.455  0.455  0.455  1.0
  Ga  Ga3  1  0.545  0.545  0.545  1.0
  Ga  Ga4  1  0.182  0.580  0.182  1.0
  Ga  Ga5  1  0.182  0.182  0.580  1.0
  Ga  Ga6  1  0.580  0.182  0.182  1.0
  Ga  Ga7  1  0.420  0.818  0.818  1.0
  Ga  Ga8  1  0.818  0.420  0.818  1.0
  Ga  Ga9  1  0.818  0.818  0.420  1.0
  Ga  Ga10  1  0.216  0.798  0.216  1.0
  Ga  Ga11  1  0.216  0.216  0.798  1.0
  Ga  Ga12  1  0.798  0.216  0.216  1.0
  Ga  Ga13  1  0.202  0.784  0.784  1.0
  Ga  Ga14  1  0.784  0.202  0.784  1.0
  Ga  Ga15  1  0.784  0.784  0.202  1.0
[/CIF]
.