data_BeNbMo4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.2
_cell_length_b   5.2
_cell_length_c   5.2
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeNbMo4
_chemical_formula_sum   'Be1 Nb1 Mo4'
_cell_volume   99.32
_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
  Nb  Nb5  1  0.51  0.51  0.51  1.0
  Mo  Mo1  1  0.75  0.6  0.6  1.0
  Mo  Mo2  1  0.6  0.6  0.75  1.0
  Mo  Mo3  1  0.6  0.75  0.6  1.0
  Mo  Mo4  1  0.75  0.75  0.75  1.0

data_BeNbMo4
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.2
_cell_length_b   5.2
_cell_length_c   12.73
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   BeNbMo4
_chemical_formula_sum   'Be3 Nb3 Mo12'
_cell_volume   297.96
_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
  Nb  Nb1  3  0.0  0.0  0.49  1.0
  Mo  Mo2  9  0.05  0.1  0.35  1.0
  Mo  Mo3  3  0.0  0.0  0.25  1.0

Be Nb Mo Mo Mo Mo
Be Nb Mo Mo Mo Mo 0 5 - - - 0 5 - - o 0 5 o - - 0 5 - o - 0 4 - - o 0 4 - o - 0 4 o - - 0 3 - - o 0 3 - o - 0 3 o - - 0 2 - - o 0 2 - o - 0 2 o - - 1 4 o o o 1 3 o o o 1 2 o o o 2 4 o o o 2 3 o o o 2 5 o o o 3 4 o o o 3 5 o o o 4 5 o o o 
BeNbMo4 crystallizes in the trigonal R3m space group. Be(1) is bonded in a 7-coordinate geometry to one Mo(2) and six equivalent Mo(1) atoms. The Be(1)-Mo(2) bond length is 3.17 Å. All Be(1)-Mo(1) bond lengths are 2.81 Å. Nb(1) is bonded in a 6-coordinate geometry to three equivalent Mo(1) and three equivalent Mo(2) atoms. All Nb(1)-Mo(1) bond lengths are 1.80 Å. All Nb(1)-Mo(2) bond lengths are 3.24 Å. There are two inequivalent Mo sites. In the first Mo site, Mo(2) is bonded in a 7-coordinate geometry to one Be(1), three equivalent Nb(1), and three equivalent Mo(1) atoms. All Mo(2)-Mo(1) bond lengths are 1.35 Å. In the second Mo site, Mo(1) is bonded in a 2-coordinate geometry to two equivalent Be(1), one Nb(1), one Mo(2), and two equivalent Mo(1) atoms. Both Mo(1)-Mo(1) bond lengths are 0.78 Å.