data_Si3RhF
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.6
_cell_length_b   4.6
_cell_length_c   4.6
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si3RhF
_chemical_formula_sum   'Si3 Rh1 F1'
_cell_volume   97.13
_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
  Si  Si0  1  0.3  0.0  0.3  1.0
  Si  Si1  1  0.3  0.3  0.0  1.0
  Si  Si2  1  0.0  0.3  0.3  1.0
  Rh  Rh3  1  0.3  0.3  0.3  1.0
  F  F4  1  0.0  0.0  0.0  1.0

data_Si3RhF
_symmetry_space_group_name_H-M   R3m
_cell_length_a   6.5
_cell_length_b   6.5
_cell_length_c   7.96
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Si3RhF
_chemical_formula_sum   'Si9 Rh3 F3'
_cell_volume   291.38
_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
  Si  Si0  9  0.1  0.2  0.2  1.0
  Rh  Rh1  3  0.0  0.0  0.3  1.0
  F  F2  3  0.0  0.0  0.0  1.0

Si Si Si Rh F
RhSi3F is Pb (Zr_0.50 Ti_0.48) O_3 structured and crystallizes in the trigonal R3m space group. The structure is zero-dimensional and consists of three RhSi3F clusters. Rh(1) is bonded in a distorted T-shaped geometry to three equivalent Si(1) atoms. All Rh(1)-Si(1) bond lengths are 1.37 Å. Si(1) is bonded in an L-shaped geometry to one Rh(1) and one F(1) atom. The Si(1)-F(1) bond length is 1.94 Å. F(1) is bonded in a 3-coordinate geometry to three equivalent Si(1) atoms.