The crystal structure described by Rb3EuCl6 crystallizes in the monoclinic C2/c space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(3), two equivalent Cl(2), two equivalent Cl(4), and two equivalent Cl(5) atoms. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to one Cl(2), one Cl(3), one Cl(4), one Cl(5), two equivalent Cl(1), and two equivalent Cl(6) atoms. In the third Rb site, Rb(3) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(2), one Cl(4), one Cl(5), two equivalent Cl(3), and two equivalent Cl(6) atoms. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in an octahedral geometry to two equivalent Cl(2), two equivalent Cl(4), and two equivalent Cl(5) atoms. In the second Eu site, Eu(2) is bonded in an octahedral geometry to two equivalent Cl(1), two equivalent Cl(3), and two equivalent Cl(6) atoms. There are six inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to one Rb(1), one Rb(3), two equivalent Rb(2), and one Eu(2) atom to form a mixture of distorted corner and edge-sharing ClRb4Eu trigonal bipyramids. In the second Cl site, Cl(2) is bonded in a 5-coordinate geometry to one Rb(2), one Rb(3), two equivalent Rb(1), and one Eu(1) atom. In the third Cl site, Cl(3) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(2), two equivalent Rb(3), and one Eu(2) atom. In the fourth Cl site, Cl(4) is bonded to one Rb(2), one Rb(3), two equivalent Rb(1), and one Eu(1) atom to form a mixture of distorted corner, edge, and face-sharing ClRb4Eu square pyramids. In the fifth Cl site, Cl(5) is bonded in a 1-coordinate geometry to one Rb(2), one Rb(3), two equivalent Rb(1), and one Eu(1) atom. In the sixth Cl site, Cl(6) is bonded in a 5-coordinate geometry to two equivalent Rb(2), two equivalent Rb(3), and one Eu(2) atom. is represented by the CIF file [CIF]
data_Rb3EuCl6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.107
_cell_length_b   13.104
_cell_length_c   13.867
_cell_angle_alpha   99.125
_cell_angle_beta   106.996
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1389.225
_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  0.696  0.068  0.901  1.0
  Rb  Rb1  1  0.304  0.932  0.099  1.0
  Rb  Rb2  1  0.795  0.432  0.099  1.0
  Rb  Rb3  1  0.205  0.568  0.901  1.0
  Rb  Rb4  1  0.533  0.355  0.692  1.0
  Rb  Rb5  1  0.467  0.645  0.308  1.0
  Rb  Rb6  1  0.841  0.145  0.308  1.0
  Rb  Rb7  1  0.159  0.855  0.692  1.0
  Rb  Rb8  1  0.348  0.299  0.323  1.0
  Rb  Rb9  1  0.652  0.701  0.677  1.0
  Rb  Rb10  1  0.025  0.201  0.677  1.0
  Rb  Rb11  1  0.975  0.799  0.323  1.0
  Eu  Eu12  1  0.218  0.250  0.000  1.0
  Eu  Eu13  1  0.782  0.750  0.000  1.0
  Eu  Eu14  1  0.500  0.000  0.500  1.0
  Eu  Eu15  1  0.000  0.500  0.500  1.0
  Cl  Cl16  1  0.378  0.082  0.660  1.0
  Cl  Cl17  1  0.622  0.918  0.340  1.0
  Cl  Cl18  1  0.718  0.418  0.340  1.0
  Cl  Cl19  1  0.282  0.582  0.660  1.0
  Cl  Cl20  1  0.510  0.177  0.119  1.0
  Cl  Cl21  1  0.490  0.823  0.881  1.0
  Cl  Cl22  1  0.391  0.323  0.881  1.0
  Cl  Cl23  1  0.609  0.677  0.119  1.0
  Cl  Cl24  1  0.214  0.034  0.349  1.0
  Cl  Cl25  1  0.786  0.966  0.651  1.0
  Cl  Cl26  1  0.865  0.466  0.651  1.0
  Cl  Cl27  1  0.135  0.534  0.349  1.0
  Cl  Cl28  1  0.094  0.696  0.120  1.0
  Cl  Cl29  1  0.906  0.304  0.880  1.0
  Cl  Cl30  1  0.975  0.804  0.880  1.0
  Cl  Cl31  1  0.025  0.196  0.120  1.0
  Cl  Cl32  1  0.282  0.439  0.119  1.0
  Cl  Cl33  1  0.718  0.561  0.881  1.0
  Cl  Cl34  1  0.163  0.061  0.881  1.0
  Cl  Cl35  1  0.837  0.939  0.119  1.0
  Cl  Cl36  1  0.643  0.191  0.499  1.0
  Cl  Cl37  1  0.357  0.809  0.501  1.0
  Cl  Cl38  1  0.144  0.309  0.501  1.0
  Cl  Cl39  1  0.856  0.691  0.499  1.0
[/CIF]
.
The crystal structure described by Rb3EuCl6 crystallizes in the monoclinic C2/c space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(3), two equivalent Cl(2), two equivalent Cl(4), and two equivalent Cl(5) atoms. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to one Cl(2), one Cl(3), one Cl(4), one Cl(5), two equivalent Cl(1), and two equivalent Cl(6) atoms. In the third Rb site, Rb(3) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(2), one Cl(4), one Cl(5), two equivalent Cl(3), and two equivalent Cl(6) atoms. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in an octahedral geometry to two equivalent Cl(2), two equivalent Cl(4), and two equivalent Cl(5) atoms. In the second Eu site, Eu(2) is bonded in an octahedral geometry to two equivalent Cl(1), two equivalent Cl(3), and two equivalent Cl(6) atoms. There are six inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to one Rb(1), one Rb(3), two equivalent Rb(2), and one Eu(2) atom to form a mixture of distorted corner and edge-sharing ClRb4Eu trigonal bipyramids. In the second Cl site, Cl(2) is bonded in a 5-coordinate geometry to one Rb(2), one Rb(3), two equivalent Rb(1), and one Eu(1) atom. In the third Cl site, Cl(3) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(2), two equivalent Rb(3), and one Eu(2) atom. In the fourth Cl site, Cl(4) is bonded to one Rb(2), one Rb(3), two equivalent Rb(1), and one Eu(1) atom to form a mixture of distorted corner, edge, and face-sharing ClRb4Eu square pyramids. In the fifth Cl site, Cl(5) is bonded in a 1-coordinate geometry to one Rb(2), one Rb(3), two equivalent Rb(1), and one Eu(1) atom. In the sixth Cl site, Cl(6) is bonded in a 5-coordinate geometry to two equivalent Rb(2), two equivalent Rb(3), and one Eu(2) atom. is represented by the CIF file [CIF]
data_Rb3EuCl6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.107
_cell_length_b   13.104
_cell_length_c   13.867
_cell_angle_alpha   99.125
_cell_angle_beta   106.996
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1389.225
_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  0.696  0.068  0.901  1.0
  Rb  Rb1  1  0.304  0.932  0.099  1.0
  Rb  Rb2  1  0.795  0.432  0.099  1.0
  Rb  Rb3  1  0.205  0.568  0.901  1.0
  Rb  Rb4  1  0.533  0.355  0.692  1.0
  Rb  Rb5  1  0.467  0.645  0.308  1.0
  Rb  Rb6  1  0.841  0.145  0.308  1.0
  Rb  Rb7  1  0.159  0.855  0.692  1.0
  Rb  Rb8  1  0.348  0.299  0.323  1.0
  Rb  Rb9  1  0.652  0.701  0.677  1.0
  Rb  Rb10  1  0.025  0.201  0.677  1.0
  Rb  Rb11  1  0.975  0.799  0.323  1.0
  Eu  Eu12  1  0.218  0.250  0.000  1.0
  Eu  Eu13  1  0.782  0.750  0.000  1.0
  Eu  Eu14  1  0.500  0.000  0.500  1.0
  Eu  Eu15  1  0.000  0.500  0.500  1.0
  Cl  Cl16  1  0.378  0.082  0.660  1.0
  Cl  Cl17  1  0.622  0.918  0.340  1.0
  Cl  Cl18  1  0.718  0.418  0.340  1.0
  Cl  Cl19  1  0.282  0.582  0.660  1.0
  Cl  Cl20  1  0.510  0.177  0.119  1.0
  Cl  Cl21  1  0.490  0.823  0.881  1.0
  Cl  Cl22  1  0.391  0.323  0.881  1.0
  Cl  Cl23  1  0.609  0.677  0.119  1.0
  Cl  Cl24  1  0.214  0.034  0.349  1.0
  Cl  Cl25  1  0.786  0.966  0.651  1.0
  Cl  Cl26  1  0.865  0.466  0.651  1.0
  Cl  Cl27  1  0.135  0.534  0.349  1.0
  Cl  Cl28  1  0.094  0.696  0.120  1.0
  Cl  Cl29  1  0.906  0.304  0.880  1.0
  Cl  Cl30  1  0.975  0.804  0.880  1.0
  Cl  Cl31  1  0.025  0.196  0.120  1.0
  Cl  Cl32  1  0.282  0.439  0.119  1.0
  Cl  Cl33  1  0.718  0.561  0.881  1.0
  Cl  Cl34  1  0.163  0.061  0.881  1.0
  Cl  Cl35  1  0.837  0.939  0.119  1.0
  Cl  Cl36  1  0.643  0.191  0.499  1.0
  Cl  Cl37  1  0.357  0.809  0.501  1.0
  Cl  Cl38  1  0.144  0.309  0.501  1.0
  Cl  Cl39  1  0.856  0.691  0.499  1.0
[/CIF]
.