data_Si2PRh2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.21
_cell_length_b   7.21
_cell_length_c   2.73
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2PRh2
_chemical_formula_sum   'Si4 P2 Rh4'
_cell_volume   142.15
_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
  Si  Si6  1  0.5  0.11  0.0  1.0
  Si  Si7  1  0.71  0.1  0.0  1.0
  Si  Si8  1  0.1  0.5  0.0  1.0
  Si  Si9  1  0.11  0.71  0.0  1.0
  P  P0  1  0.0  0.0  0.0  1.0
  P  P1  1  0.61  0.61  0.0  1.0
  Rh  Rh2  1  0.01  0.61  0.37  1.0
  Rh  Rh3  1  0.2  0.6  0.37  1.0
  Rh  Rh4  1  0.6  0.01  0.37  1.0
  Rh  Rh5  1  0.61  0.2  0.37  1.0

data_Si2PRh2
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.73
_cell_length_b   7.21
_cell_length_c   7.21
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2PRh2
_chemical_formula_sum   'Si4 P2 Rh4'
_cell_volume   142.15
_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
  Si  Si0  1  0.0  0.1  0.5  1.0
  Si  Si1  1  0.0  0.5  0.11  1.0
  Si  Si2  1  0.0  0.71  0.1  1.0
  Si  Si3  1  0.0  0.11  0.71  1.0
  P  P4  1  0.0  0.0  0.0  1.0
  P  P5  1  0.0  0.61  0.61  1.0
  Rh  Rh6  1  0.37  0.01  0.61  1.0
  Rh  Rh7  1  0.37  0.2  0.6  1.0
  Rh  Rh8  1  0.37  0.6  0.01  1.0
  Rh  Rh9  1  0.37  0.61  0.2  1.0

Si Si Si Si P P Rh Rh Rh Rh
Rh2Si2P crystallizes in the triclinic P1 space group. There are four inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 5-coordinate geometry to one Rh(2), two equivalent Si(3), two equivalent Si(4), and one P(2) atom. The Rh(1)-Rh(2) bond length is 1.42 Å. There is one shorter (1.45 Å) and one longer (2.02 Å) Rh(1)-Si(3) bond length. There is one shorter (1.42 Å) and one longer (2.00 Å) Rh(1)-Si(4) bond length. The Rh(1)-P(2) bond length is 3.07 Å. In the second Rh site, Rh(2) is bonded in a 5-coordinate geometry to one Rh(1), two equivalent Si(3), two equivalent Si(4), and one P(2) atom. There is one shorter (1.42 Å) and one longer (2.00 Å) Rh(2)-Si(3) bond length. There is one shorter (1.45 Å) and one longer (2.02 Å) Rh(2)-Si(4) bond length. The Rh(2)-P(2) bond length is 3.07 Å. In the third Rh site, Rh(3) is bonded in a 5-coordinate geometry to one Rh(4), two equivalent Si(1), two equivalent Si(2), and one P(2) atom. The Rh(3)-Rh(4) bond length is 1.42 Å. There is one shorter (1.42 Å) and one longer (2.00 Å) Rh(3)-Si(1) bond length. There is one shorter (1.45 Å) and one longer (2.02 Å) Rh(3)-Si(2) bond length. The Rh(3)-P(2) bond length is 3.07 Å. In the fourth Rh site, Rh(4) is bonded in a 5-coordinate geometry to one Rh(3), two equivalent Si(1), two equivalent Si(2), and one P(2) atom. There is one shorter (1.45 Å) and one longer (2.02 Å) Rh(4)-Si(1) bond length. There is one shorter (1.42 Å) and one longer (2.00 Å) Rh(4)-Si(2) bond length. The Rh(4)-P(2) bond length is 3.07 Å. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a 5-coordinate geometry to two equivalent Rh(3), two equivalent Rh(4), and one Si(2) atom. The Si(1)-Si(2) bond length is 1.47 Å. In the second Si site, Si(2) is bonded in a 6-coordinate geometry to two equivalent Rh(3), two equivalent Rh(4), one Si(1), and one P(1) atom. The Si(2)-P(1) bond length is 2.23 Å. In the third Si site, Si(3) is bonded in a 5-coordinate geometry to two equivalent Rh(1), two equivalent Rh(2), and one Si(4) atom. The Si(3)-Si(4) bond length is 1.47 Å. In the fourth Si site, Si(4) is bonded in a 6-coordinate geometry to two equivalent Rh(1), two equivalent Rh(2), one Si(3), and one P(1) atom. The Si(4)-P(1) bond length is 2.25 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded in a distorted bent 120 degrees geometry to one Si(2) and one Si(4) atom. In the second P site, P(2) is bonded in a 6-coordinate geometry to one Rh(1), one Rh(2), one Rh(3), one Rh(4), and two equivalent P(2) atoms. Both P(2)-P(2) bond lengths are 2.73 Å.