data_RbCaPt3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.24
_cell_length_b   5.24
_cell_length_c   5.24
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   RbCaPt3
_chemical_formula_sum   'Rb1 Ca1 Pt3'
_cell_volume   143.98
_cell_formula_units_Z   1
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  Rb1  1  0.62  0.62  0.62  1.0
  Ca  Ca0  1  0.0  0.0  0.0  1.0
  Pt  Pt2  1  0.0  0.62  0.0  1.0
  Pt  Pt3  1  0.0  0.0  0.62  1.0
  Pt  Pt4  1  0.62  0.0  0.0  1.0

data_RbCaPt3
_symmetry_space_group_name_H-M   R3m
_cell_length_a   7.41
_cell_length_b   7.41
_cell_length_c   9.08
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   RbCaPt3
_chemical_formula_sum   'Rb3 Ca3 Pt9'
_cell_volume   431.94
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  3  0.0  0.0  0.62  1.0
  Ca  Ca1  3  0.0  0.0  0.0  1.0
  Pt  Pt2  9  0.08  0.54  0.54  1.0

Rb Ca Pt Pt Pt
RbCaPt3 is Pb (Zr_0.50 Ti_0.48) O_3 structured and crystallizes in the trigonal R3m space group. Rb(1) is bonded in a 9-coordinate geometry to nine equivalent Pt(1) atoms. There are three shorter (2.81 Å) and six longer (3.81 Å) Rb(1)-Pt(1) bond lengths. Ca(1) is bonded in a distorted octahedral geometry to three equivalent Pt(1) atoms. All Ca(1)-Pt(1) bond lengths are 1.99 Å. Pt(1) is bonded in a distorted single-bond geometry to three equivalent Rb(1) and one Ca(1) atom.