data_AlCo2Rh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.8
_cell_length_b   2.8
_cell_length_c   6.26
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlCo2Rh
_chemical_formula_sum   'Al1 Co2 Rh1'
_cell_volume   49.1
_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
  Al  Al0  1  0.0  0.0  0.0  1.0
  Co  Co1  1  0.4  0.4  0.47  1.0
  Co  Co2  1  0.4  0.4  0.79  1.0
  Rh  Rh3  1  0.0  0.0  0.13  1.0

data_AlCo2Rh
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.96
_cell_length_b   3.96
_cell_length_c   6.26
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   AlCo2Rh
_chemical_formula_sum   'Al2 Co4 Rh2'
_cell_volume   98.2
_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
  Al  Al0  2  0.0  0.0  0.0  1.0
  Co  Co1  2  0.4  0.0  0.47  1.0
  Co  Co2  2  0.4  0.0  0.79  1.0
  Rh  Rh3  2  0.0  0.0  0.13  1.0

Al Co Co Rh
Al Co Co Rh 0 3 o o o 0 2 o o - 0 2 o - - 0 2 - o - 1 2 o o o 
RhCo2Al crystallizes in the monoclinic Cm space group. Rh(1) is bonded in a single-bond geometry to four equivalent Co(1) and one Al(1) atom. There are a spread of Rh(1)-Co(1) bond distances ranging from 2.67-3.21 Å. The Rh(1)-Al(1) bond length is 0.82 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 9-coordinate geometry to four equivalent Rh(1), one Co(2), and four equivalent Co(1) atoms. The Co(1)-Co(2) bond length is 1.95 Å. All Co(1)-Co(1) bond lengths are 2.80 Å. In the second Co site, Co(2) is bonded in a 5-coordinate geometry to one Co(1) and four equivalent Al(1) atoms. There are a spread of Co(2)-Al(1) bond distances ranging from 2.07-2.73 Å. Al(1) is bonded in a single-bond geometry to one Rh(1) and four equivalent Co(2) atoms.