The compound described by Rh2Si is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rh sites. In the first Rh site, Rh(2) is bonded to four equivalent Si(1) atoms to form a mixture of distorted corner and edge-sharing RhSi4 tetrahedra. In the second Rh site, Rh(1) is bonded in a 3-coordinate geometry to three equivalent Si(1) atoms. Si(1) is bonded in a 7-coordinate geometry to three equivalent Rh(1) and four equivalent Rh(2) atoms. is represented by the CIF card [CIF]
data_SiRh2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.926
_cell_length_b   5.457
_cell_length_c   7.376
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   158.035
_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
  Si  Si0  1  0.250  0.777  0.394  1.0
  Si  Si1  1  0.750  0.223  0.606  1.0
  Si  Si2  1  0.250  0.277  0.106  1.0
  Si  Si3  1  0.750  0.723  0.894  1.0
  Rh  Rh4  1  0.750  0.027  0.304  1.0
  Rh  Rh5  1  0.250  0.973  0.696  1.0
  Rh  Rh6  1  0.750  0.527  0.196  1.0
  Rh  Rh7  1  0.250  0.473  0.804  1.0
  Rh  Rh8  1  0.250  0.341  0.430  1.0
  Rh  Rh9  1  0.750  0.659  0.570  1.0
  Rh  Rh10  1  0.250  0.841  0.070  1.0
  Rh  Rh11  1  0.750  0.159  0.930  1.0
[/CIF]
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The compound described by Rh2Si is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rh sites. In the first Rh site, Rh(2) is bonded to four equivalent Si(1) atoms to form a mixture of distorted corner and edge-sharing RhSi4 tetrahedra. In the second Rh site, Rh(1) is bonded in a 3-coordinate geometry to three equivalent Si(1) atoms. Si(1) is bonded in a 7-coordinate geometry to three equivalent Rh(1) and four equivalent Rh(2) atoms. is represented by the CIF card [CIF]
data_SiRh2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.926
_cell_length_b   5.457
_cell_length_c   7.376
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   158.035
_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
  Si  Si0  1  0.250  0.777  0.394  1.0
  Si  Si1  1  0.750  0.223  0.606  1.0
  Si  Si2  1  0.250  0.277  0.106  1.0
  Si  Si3  1  0.750  0.723  0.894  1.0
  Rh  Rh4  1  0.750  0.027  0.304  1.0
  Rh  Rh5  1  0.250  0.973  0.696  1.0
  Rh  Rh6  1  0.750  0.527  0.196  1.0
  Rh  Rh7  1  0.250  0.473  0.804  1.0
  Rh  Rh8  1  0.250  0.341  0.430  1.0
  Rh  Rh9  1  0.750  0.659  0.570  1.0
  Rh  Rh10  1  0.250  0.841  0.070  1.0
  Rh  Rh11  1  0.750  0.159  0.930  1.0
[/CIF]
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