data_Be2RhSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.1
_cell_length_b   3.1
_cell_length_c   5.13
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2RhSe
_chemical_formula_sum   'Be2 Rh1 Se1'
_cell_volume   49.19
_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
  Be  Be0  1  0.55  0.55  0.4  1.0
  Be  Be1  1  0.55  0.55  0.73  1.0
  Rh  Rh2  1  0.0  0.0  0.57  1.0
  Se  Se3  1  0.0  0.0  0.0  1.0

data_Be2RhSe
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.38
_cell_length_b   4.38
_cell_length_c   5.13
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Be2RhSe
_chemical_formula_sum   'Be4 Rh2 Se2'
_cell_volume   98.37
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Be  Be0  2  0.05  0.5  0.4  1.0
  Be  Be1  2  0.05  0.5  0.73  1.0
  Rh  Rh2  2  0.0  0.0  0.57  1.0
  Se  Se3  2  0.0  0.0  0.0  1.0

Be Be Rh Se
Be2RhSe crystallizes in the monoclinic Cm space group. There are two inequivalent Be sites. In the first Be site, Be(1) is bonded in a 6-coordinate geometry to one Be(2), four equivalent Rh(1), and one Se(1) atom. The Be(1)-Be(2) bond length is 1.70 Å. There are a spread of Be(1)-Rh(1) bond distances ranging from 2.15-2.55 Å. The Be(1)-Se(1) bond length is 2.85 Å. In the second Be site, Be(2) is bonded in a 9-coordinate geometry to one Be(1), four equivalent Rh(1), and four equivalent Se(1) atoms. There are a spread of Be(2)-Rh(1) bond distances ranging from 2.15-2.55 Å. There are a spread of Be(2)-Se(1) bond distances ranging from 2.41-2.77 Å. Rh(1) is bonded in a 10-coordinate geometry to four equivalent Be(1), four equivalent Be(2), and two equivalent Se(1) atoms. There is one shorter (2.23 Å) and one longer (2.90 Å) Rh(1)-Se(1) bond length. Se(1) is bonded in a 7-coordinate geometry to one Be(1), four equivalent Be(2), and two equivalent Rh(1) atoms.