data_LaBeHgPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.21
_cell_length_b   5.21
_cell_length_c   5.21
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaBeHgPb
_chemical_formula_sum   'La1 Be1 Hg1 Pb1'
_cell_volume   100.17
_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  La2  1  0.53  0.53  0.53  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0
  Hg  Hg1  1  0.84  0.84  0.84  1.0
  Pb  Pb3  1  0.69  0.69  0.69  1.0

data_LaBeHgPb
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.21
_cell_length_b   5.21
_cell_length_c   12.77
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   LaBeHgPb
_chemical_formula_sum   'La3 Be3 Hg3 Pb3'
_cell_volume   300.5
_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
  La  La0  3  0.0  0.0  0.47  1.0
  Be  Be1  3  0.0  0.0  0.0  1.0
  Hg  Hg2  3  0.0  0.0  0.16  1.0
  Pb  Pb3  3  0.0  0.0  0.31  1.0

La Be Hg Pb
BeLaHgPb crystallizes in the trigonal R3m space group. Be(1) is bonded to one Hg(1) and three equivalent Pb(1) atoms to form distorted BeHgPb3 trigonal pyramids that share corners with three equivalent Hg(1)La3BePb trigonal bipyramids and corners with six equivalent Be(1)HgPb3 trigonal pyramids. The Be(1)-Hg(1) bond length is 2.00 Å. All Be(1)-Pb(1) bond lengths are 3.02 Å. La(1) is bonded in a distorted single-bond geometry to three equivalent Hg(1) and one Pb(1) atom. All La(1)-Hg(1) bond lengths are 3.02 Å. The La(1)-Pb(1) bond length is 2.00 Å. Hg(1) is bonded to one Be(1), three equivalent La(1), and one Pb(1) atom to form distorted HgLa3BePb trigonal bipyramids that share corners with six equivalent Hg(1)La3BePb trigonal bipyramids and corners with three equivalent Be(1)HgPb3 trigonal pyramids. The Hg(1)-Pb(1) bond length is 2.00 Å. Pb(1) is bonded in a distorted linear geometry to three equivalent Be(1), one La(1), and one Hg(1) atom.