data_BeNi2Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.94
_cell_length_b   3.94
_cell_length_c   3.94
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeNi2Ge
_chemical_formula_sum   'Be1 Ni2 Ge1'
_cell_volume   43.24
_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
  Ni  Ni2  1  0.18  0.18  0.18  1.0
  Ni  Ni3  1  0.39  0.39  0.39  1.0
  Ge  Ge1  1  0.79  0.79  0.79  1.0

data_BeNi2Ge
_symmetry_space_group_name_H-M   R3m
_cell_length_a   3.94
_cell_length_b   3.94
_cell_length_c   9.65
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   BeNi2Ge
_chemical_formula_sum   'Be3 Ni6 Ge3'
_cell_volume   129.73
_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
  Ni  Ni1  3  0.0  0.0  0.61  1.0
  Ni  Ni2  3  0.0  0.0  0.82  1.0
  Ge  Ge3  3  0.0  0.0  0.21  1.0

Be Ni Ni Ge
Be Ni Ni Ge 0 3 - - - 0 3 - o - 0 3 o - - 0 3 - - o 0 1 o o o 0 2 o o - 0 2 o - o 0 2 - o o 1 2 o o o 1 2 o o - 1 2 - o o 1 2 o - o 1 3 o - - 1 3 - o - 1 3 - - o 2 3 - o o 2 3 o - o 2 3 o o - 
BeNi2Ge crystallizes in the trigonal R3m space group. Be(1) is bonded in a 2-coordinate geometry to one Ni(1), three equivalent Ni(2), and one Ge(1) atom. The Be(1)-Ni(1) bond length is 1.73 Å. All Be(1)-Ni(2) bond lengths are 2.35 Å. The Be(1)-Ge(1) bond length is 2.07 Å. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a distorted single-bond geometry to one Be(1) and one Ni(2) atom. The Ni(1)-Ni(2) bond length is 2.07 Å. In the second Ni site, Ni(2) is bonded in a 7-coordinate geometry to three equivalent Be(1), one Ni(1), and three equivalent Ge(1) atoms. All Ni(2)-Ge(1) bond lengths are 2.35 Å. Ge(1) is bonded in a distorted single-bond geometry to one Be(1) and three equivalent Ni(2) atoms.