data_K4CrRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.8
_cell_length_b   6.8
_cell_length_c   6.8
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K4CrRh
_chemical_formula_sum   'K4 Cr1 Rh1'
_cell_volume   222.33
_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
  K  K1  1  1.0  1.0  0.62  1.0
  K  K2  1  1.0  0.62  1.0  1.0
  K  K3  1  0.62  1.0  1.0  1.0
  K  K4  1  0.62  0.62  0.62  1.0
  Cr  Cr0  1  0.0  0.0  0.0  1.0
  Rh  Rh5  1  0.21  0.21  0.21  1.0

data_K4CrRh
_symmetry_space_group_name_H-M   R3m
_cell_length_a   6.8
_cell_length_b   6.8
_cell_length_c   16.66
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   K4CrRh
_chemical_formula_sum   'K12 Cr3 Rh3'
_cell_volume   666.98
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  K  K0  9  0.21  0.41  0.79  1.0
  K  K1  3  0.0  0.0  0.38  1.0
  Cr  Cr2  3  0.0  0.0  0.0  1.0
  Rh  Rh3  3  0.0  0.0  0.79  1.0

K K K K Cr Rh
K4CrRh crystallizes in the trigonal R3m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a distorted bent 120 degrees geometry to three equivalent K(2), one Cr(1), and one Rh(1) atom. There are two shorter (3.67 Å) and one longer (4.52 Å) K(1)-K(2) bond length. The K(1)-Cr(1) bond length is 2.61 Å. The K(1)-Rh(1) bond length is 2.42 Å. In the second K site, K(2) is bonded in a 15-coordinate geometry to nine equivalent K(1), three equivalent Cr(1), and three equivalent Rh(1) atoms. All K(2)-Cr(1) bond lengths are 4.01 Å. All K(2)-Rh(1) bond lengths are 4.10 Å. Cr(1) is bonded in a 3-coordinate geometry to three equivalent K(1) and three equivalent K(2) atoms. Rh(1) is bonded in a trigonal planar geometry to three equivalent K(1) and three equivalent K(2) atoms.