data_BeCdSiGe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.59
_cell_length_b   4.59
_cell_length_c   4.59
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeCdSiGe
_chemical_formula_sum   'Be1 Cd1 Si1 Ge1'
_cell_volume   68.58
_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  0.0  0.0  0.0  1.0
  Cd  Cd1  1  0.87  0.87  0.87  1.0
  Si  Si3  1  0.25  0.25  0.25  1.0
  Ge  Ge2  1  0.62  0.62  0.62  1.0

data_BeCdSiGe
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.59
_cell_length_b   4.59
_cell_length_c   11.25
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   BeCdSiGe
_chemical_formula_sum   'Be3 Cd3 Si3 Ge3'
_cell_volume   205.73
_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
  Be  Be0  3  0.0  0.0  0.0  1.0
  Cd  Cd1  3  0.0  0.0  0.13  1.0
  Si  Si2  3  0.0  0.0  0.75  1.0
  Ge  Ge3  3  0.0  0.0  0.38  1.0

Be Cd Si Ge
BeCdGeSi crystallizes in the trigonal R3m space group. Be(1) is bonded in a single-bond geometry to one Cd(1), three equivalent Ge(1), and one Si(1) atom. The Be(1)-Cd(1) bond length is 1.43 Å. All Be(1)-Ge(1) bond lengths are 2.69 Å. The Be(1)-Si(1) bond length is 2.80 Å. Cd(1) is bonded in a distorted single-bond geometry to one Be(1), four equivalent Ge(1), and three equivalent Si(1) atoms. There is one shorter (2.80 Å) and three longer (2.82 Å) Cd(1)-Ge(1) bond lengths. All Cd(1)-Si(1) bond lengths are 2.69 Å. Ge(1) is bonded in a 10-coordinate geometry to three equivalent Be(1), four equivalent Cd(1), and three equivalent Si(1) atoms. All Ge(1)-Si(1) bond lengths are 2.69 Å. Si(1) is bonded in a 7-coordinate geometry to one Be(1), three equivalent Cd(1), and three equivalent Ge(1) atoms.