The structure described by RbSm(PO3)4 crystallizes in the monoclinic C2/c space group. Rb(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Sm(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form corner-sharing PO4 tetrahedra. There are six inequivalent O sites. In the first O site, O(3) is bonded in a 3-coordinate geometry to one Rb(1), one Sm(1), and one P(1) atom. In the second O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one P(1), and one P(2) atom. In the third O site, O(5) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the fourth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Sm(1) and one P(1) atom. In the fifth O site, O(1) is bonded in a 1-coordinate geometry to one Rb(1), one Sm(1), and one P(2) atom. In the sixth O site, O(2) is bonded in a distorted single-bond geometry to one Rb(1), one Sm(1), and one P(2) atom. is represented by the CIF card [CIF]
data_RbSm(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.654
_cell_length_b   7.654
_cell_length_c   10.745
_cell_angle_alpha   78.982
_cell_angle_beta   78.982
_cell_angle_gamma   116.725
_symmetry_Int_Tables_number   1
_cell_volume   523.597
_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  0.807  0.193  0.750  1.0
  Rb  Rb1  1  0.193  0.807  0.250  1.0
  Sm  Sm2  1  0.123  0.877  0.750  1.0
  Sm  Sm3  1  0.877  0.123  0.250  1.0
  P  P4  1  0.305  0.251  0.950  1.0
  P  P5  1  0.749  0.695  0.550  1.0
  P  P6  1  0.695  0.749  0.050  1.0
  P  P7  1  0.251  0.305  0.450  1.0
  P  P8  1  0.380  0.707  0.512  1.0
  P  P9  1  0.293  0.620  0.988  1.0
  P  P10  1  0.620  0.293  0.488  1.0
  P  P11  1  0.707  0.380  0.012  1.0
  O  O12  1  0.309  0.795  0.886  1.0
  O  O13  1  0.205  0.691  0.614  1.0
  O  O14  1  0.691  0.205  0.114  1.0
  O  O15  1  0.795  0.309  0.386  1.0
  O  O16  1  0.484  0.100  0.605  1.0
  O  O17  1  0.900  0.516  0.895  1.0
  O  O18  1  0.516  0.900  0.395  1.0
  O  O19  1  0.100  0.484  0.105  1.0
  O  O20  1  0.139  0.159  0.590  1.0
  O  O21  1  0.841  0.861  0.910  1.0
  O  O22  1  0.861  0.841  0.410  1.0
  O  O23  1  0.159  0.139  0.090  1.0
  O  O24  1  0.275  0.526  0.447  1.0
  O  O25  1  0.474  0.725  0.053  1.0
  O  O26  1  0.725  0.474  0.553  1.0
  O  O27  1  0.526  0.275  0.947  1.0
  O  O28  1  0.641  0.511  0.091  1.0
  O  O29  1  0.489  0.359  0.409  1.0
  O  O30  1  0.359  0.489  0.909  1.0
  O  O31  1  0.511  0.641  0.591  1.0
  O  O32  1  0.169  0.254  0.338  1.0
  O  O33  1  0.746  0.831  0.162  1.0
  O  O34  1  0.831  0.746  0.662  1.0
  O  O35  1  0.254  0.169  0.838  1.0
[/CIF]
.
The structure described by RbSm(PO3)4 crystallizes in the monoclinic C2/c space group. Rb(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Sm(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form corner-sharing PO4 tetrahedra. There are six inequivalent O sites. In the first O site, O(3) is bonded in a 3-coordinate geometry to one Rb(1), one Sm(1), and one P(1) atom. In the second O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one P(1), and one P(2) atom. In the third O site, O(5) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the fourth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Sm(1) and one P(1) atom. In the fifth O site, O(1) is bonded in a 1-coordinate geometry to one Rb(1), one Sm(1), and one P(2) atom. In the sixth O site, O(2) is bonded in a distorted single-bond geometry to one Rb(1), one Sm(1), and one P(2) atom. is represented by the CIF card [CIF]
data_RbSm(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.654
_cell_length_b   7.654
_cell_length_c   10.745
_cell_angle_alpha   78.982
_cell_angle_beta   78.982
_cell_angle_gamma   116.725
_symmetry_Int_Tables_number   1
_cell_volume   523.597
_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  0.807  0.193  0.750  1.0
  Rb  Rb1  1  0.193  0.807  0.250  1.0
  Sm  Sm2  1  0.123  0.877  0.750  1.0
  Sm  Sm3  1  0.877  0.123  0.250  1.0
  P  P4  1  0.305  0.251  0.950  1.0
  P  P5  1  0.749  0.695  0.550  1.0
  P  P6  1  0.695  0.749  0.050  1.0
  P  P7  1  0.251  0.305  0.450  1.0
  P  P8  1  0.380  0.707  0.512  1.0
  P  P9  1  0.293  0.620  0.988  1.0
  P  P10  1  0.620  0.293  0.488  1.0
  P  P11  1  0.707  0.380  0.012  1.0
  O  O12  1  0.309  0.795  0.886  1.0
  O  O13  1  0.205  0.691  0.614  1.0
  O  O14  1  0.691  0.205  0.114  1.0
  O  O15  1  0.795  0.309  0.386  1.0
  O  O16  1  0.484  0.100  0.605  1.0
  O  O17  1  0.900  0.516  0.895  1.0
  O  O18  1  0.516  0.900  0.395  1.0
  O  O19  1  0.100  0.484  0.105  1.0
  O  O20  1  0.139  0.159  0.590  1.0
  O  O21  1  0.841  0.861  0.910  1.0
  O  O22  1  0.861  0.841  0.410  1.0
  O  O23  1  0.159  0.139  0.090  1.0
  O  O24  1  0.275  0.526  0.447  1.0
  O  O25  1  0.474  0.725  0.053  1.0
  O  O26  1  0.725  0.474  0.553  1.0
  O  O27  1  0.526  0.275  0.947  1.0
  O  O28  1  0.641  0.511  0.091  1.0
  O  O29  1  0.489  0.359  0.409  1.0
  O  O30  1  0.359  0.489  0.909  1.0
  O  O31  1  0.511  0.641  0.591  1.0
  O  O32  1  0.169  0.254  0.338  1.0
  O  O33  1  0.746  0.831  0.162  1.0
  O  O34  1  0.831  0.746  0.662  1.0
  O  O35  1  0.254  0.169  0.838  1.0
[/CIF]
.