data_U2BeV
_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   U2BeV
_chemical_formula_sum   'U2 Be1 V1'
_cell_volume   68.49
_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
  U  U1  1  0.62  0.62  0.62  1.0
  U  U2  1  0.87  0.87  0.87  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0
  V  V3  1  0.25  0.25  0.25  1.0

data_U2BeV
_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   U2BeV
_chemical_formula_sum   'U6 Be3 V3'
_cell_volume   205.47
_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
  U  U0  3  0.0  0.0  0.13  1.0
  U  U1  3  0.0  0.0  0.38  1.0
  Be  Be2  3  0.0  0.0  0.0  1.0
  V  V3  3  0.0  0.0  0.75  1.0

U U Be V
U U Be V 0 1 o - o 0 1 - o o 0 1 o o - 0 1 o o o 0 3 o o + 0 3 o + o 0 3 + o o 0 2 o + + 0 2 + o + 0 2 + + o 1 2 + + + 1 3 + + o 1 3 + o + 1 3 o + + 2 3 o o o 2 3 o o - 2 3 - o o 2 3 o - o 
BeU2V crystallizes in the trigonal R3m space group. Be(1) is bonded in a single-bond geometry to one U(2), three equivalent U(1), and four equivalent V(1) atoms. The Be(1)-U(2) bond length is 1.45 Å. All Be(1)-U(1) bond lengths are 2.70 Å. There is one shorter (2.78 Å) and three longer (2.82 Å) Be(1)-V(1) bond lengths. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 7-coordinate geometry to three equivalent Be(1), one U(2), and three equivalent V(1) atoms. The U(1)-U(2) bond length is 2.78 Å. All U(1)-V(1) bond lengths are 2.70 Å. In the second U site, U(2) is bonded in a single-bond geometry to one Be(1), one U(1), and three equivalent V(1) atoms. All U(2)-V(1) bond lengths are 2.70 Å. V(1) is bonded in a 10-coordinate geometry to four equivalent Be(1), three equivalent U(1), and three equivalent U(2) atoms.