data_LaMgRh2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.81
_cell_length_b   4.81
_cell_length_c   4.81
_cell_angle_alpha   122.96
_cell_angle_beta   119.43
_cell_angle_gamma   87.97
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaMgRh2
_chemical_formula_sum   'La1 Mg1 Rh2'
_cell_volume   77.03
_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
  La  La0  1  0.0  0.0  0.46  1.0
  Mg  Mg1  1  0.0  0.0  0.0  1.0
  Rh  Rh2  1  0.0  0.42  0.76  1.0
  Rh  Rh3  1  0.3  0.0  0.7  1.0

data_LaMgRh2
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.59
_cell_length_b   4.81
_cell_length_c   4.81
_cell_angle_alpha   60.57
_cell_angle_beta   61.48
_cell_angle_gamma   61.48
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaMgRh2
_chemical_formula_sum   'La1 Mg1 Rh2'
_cell_volume   77.03
_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
  La  La0  1  0.46  0.0  0.54  1.0
  Mg  Mg1  1  0.0  0.0  0.0  1.0
  Rh  Rh2  1  0.4  0.3  0.3  1.0
  Rh  Rh3  1  0.76  0.0  0.66  1.0

La Mg Rh Rh
MgLaRh2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 5-coordinate geometry to one La(1), two equivalent Rh(1), and two equivalent Rh(2) atoms. The Mg(1)-La(1) bond length is 2.21 Å. There is one shorter (2.35 Å) and one longer (2.84 Å) Mg(1)-Rh(1) bond length. There is one shorter (2.48 Å) and one longer (2.96 Å) Mg(1)-Rh(2) bond length. La(1) is bonded in a distorted water-like geometry to one Mg(1), one Rh(1), and one Rh(2) atom. The La(1)-Rh(1) bond length is 1.75 Å. The La(1)-Rh(2) bond length is 1.32 Å. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 2-coordinate geometry to two equivalent Mg(1) and one La(1) atom. In the second Rh site, Rh(2) is bonded in a single-bond geometry to two equivalent Mg(1) and one La(1) atom.