The compound described by Rb6AlSb3 is alpha Pu-derived structured and crystallizes in the monoclinic P2_1/m space group. There are six inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to two equivalent Al(1), two equivalent Sb(3), and three equivalent Sb(2) atoms. In the second Rb site, Rb(2) is bonded to one Sb(1) and three equivalent Sb(3) atoms to form a mixture of distorted corner and edge-sharing RbSb4 tetrahedra. In the third Rb site, Rb(3) is bonded in a 4-coordinate geometry to one Sb(1) and three equivalent Sb(2) atoms. In the fourth Rb site, Rb(4) is bonded in a 3-coordinate geometry to three equivalent Sb(1) atoms. In the fifth Rb site, Rb(5) is bonded in a 3-coordinate geometry to one Sb(2) and two equivalent Sb(1) atoms. In the sixth Rb site, Rb(6) is bonded to one Sb(3) and three equivalent Sb(2) atoms to form a mixture of distorted corner and edge-sharing RbSb4 trigonal pyramids. Al(1) is bonded in a distorted trigonal planar geometry to two equivalent Rb(1), one Sb(1), one Sb(2), and one Sb(3) atom. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 1-coordinate geometry to one Rb(2), one Rb(3), two equivalent Rb(5), three equivalent Rb(4), and one Al(1) atom. In the second Sb site, Sb(2) is bonded in a 11-coordinate geometry to one Rb(5), three equivalent Rb(1), three equivalent Rb(3), three equivalent Rb(6), and one Al(1) atom. In the third Sb site, Sb(3) is bonded in a 1-coordinate geometry to one Rb(6), two equivalent Rb(1), three equivalent Rb(2), and one Al(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb6AlSb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.272
_cell_length_b   10.766
_cell_length_c   12.437
_cell_angle_alpha   100.744
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   825.110
_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  0.750  0.879  0.324  1.0
  Rb  Rb1  1  0.250  0.121  0.676  1.0
  Rb  Rb2  1  0.750  0.864  0.976  1.0
  Rb  Rb3  1  0.250  0.136  0.024  1.0
  Rb  Rb4  1  0.750  0.559  0.458  1.0
  Rb  Rb5  1  0.250  0.441  0.542  1.0
  Rb  Rb6  1  0.750  0.542  0.077  1.0
  Rb  Rb7  1  0.250  0.458  0.923  1.0
  Rb  Rb8  1  0.750  0.258  0.222  1.0
  Rb  Rb9  1  0.250  0.742  0.778  1.0
  Rb  Rb10  1  0.750  0.913  0.632  1.0
  Rb  Rb11  1  0.250  0.087  0.368  1.0
  Al  Al12  1  0.750  0.321  0.720  1.0
  Al  Al13  1  0.250  0.679  0.280  1.0
  Sb  Sb14  1  0.750  0.567  0.772  1.0
  Sb  Sb15  1  0.250  0.433  0.228  1.0
  Sb  Sb16  1  0.750  0.212  0.512  1.0
  Sb  Sb17  1  0.250  0.788  0.488  1.0
  Sb  Sb18  1  0.750  0.180  0.877  1.0
  Sb  Sb19  1  0.250  0.820  0.123  1.0
[/CIF]
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The compound described by Rb6AlSb3 is alpha Pu-derived structured and crystallizes in the monoclinic P2_1/m space group. There are six inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to two equivalent Al(1), two equivalent Sb(3), and three equivalent Sb(2) atoms. In the second Rb site, Rb(2) is bonded to one Sb(1) and three equivalent Sb(3) atoms to form a mixture of distorted corner and edge-sharing RbSb4 tetrahedra. In the third Rb site, Rb(3) is bonded in a 4-coordinate geometry to one Sb(1) and three equivalent Sb(2) atoms. In the fourth Rb site, Rb(4) is bonded in a 3-coordinate geometry to three equivalent Sb(1) atoms. In the fifth Rb site, Rb(5) is bonded in a 3-coordinate geometry to one Sb(2) and two equivalent Sb(1) atoms. In the sixth Rb site, Rb(6) is bonded to one Sb(3) and three equivalent Sb(2) atoms to form a mixture of distorted corner and edge-sharing RbSb4 trigonal pyramids. Al(1) is bonded in a distorted trigonal planar geometry to two equivalent Rb(1), one Sb(1), one Sb(2), and one Sb(3) atom. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 1-coordinate geometry to one Rb(2), one Rb(3), two equivalent Rb(5), three equivalent Rb(4), and one Al(1) atom. In the second Sb site, Sb(2) is bonded in a 11-coordinate geometry to one Rb(5), three equivalent Rb(1), three equivalent Rb(3), three equivalent Rb(6), and one Al(1) atom. In the third Sb site, Sb(3) is bonded in a 1-coordinate geometry to one Rb(6), two equivalent Rb(1), three equivalent Rb(2), and one Al(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb6AlSb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.272
_cell_length_b   10.766
_cell_length_c   12.437
_cell_angle_alpha   100.744
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   825.110
_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  0.750  0.879  0.324  1.0
  Rb  Rb1  1  0.250  0.121  0.676  1.0
  Rb  Rb2  1  0.750  0.864  0.976  1.0
  Rb  Rb3  1  0.250  0.136  0.024  1.0
  Rb  Rb4  1  0.750  0.559  0.458  1.0
  Rb  Rb5  1  0.250  0.441  0.542  1.0
  Rb  Rb6  1  0.750  0.542  0.077  1.0
  Rb  Rb7  1  0.250  0.458  0.923  1.0
  Rb  Rb8  1  0.750  0.258  0.222  1.0
  Rb  Rb9  1  0.250  0.742  0.778  1.0
  Rb  Rb10  1  0.750  0.913  0.632  1.0
  Rb  Rb11  1  0.250  0.087  0.368  1.0
  Al  Al12  1  0.750  0.321  0.720  1.0
  Al  Al13  1  0.250  0.679  0.280  1.0
  Sb  Sb14  1  0.750  0.567  0.772  1.0
  Sb  Sb15  1  0.250  0.433  0.228  1.0
  Sb  Sb16  1  0.750  0.212  0.512  1.0
  Sb  Sb17  1  0.250  0.788  0.488  1.0
  Sb  Sb18  1  0.750  0.180  0.877  1.0
  Sb  Sb19  1  0.250  0.820  0.123  1.0
[/CIF]
.