data_Eu2TmB
_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   Eu2TmB
_chemical_formula_sum   'Eu2 Tm1 B1'
_cell_volume   99.36
_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
  Eu  Eu1  1  0.51  0.51  0.51  1.0
  Eu  Eu2  1  0.84  0.84  0.84  1.0
  Tm  Tm3  1  0.68  0.68  0.68  1.0
  B  B0  1  0.0  0.0  0.0  1.0

data_Eu2TmB
_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   Eu2TmB
_chemical_formula_sum   'Eu6 Tm3 B3'
_cell_volume   298.08
_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
  Eu  Eu0  3  0.0  0.0  0.16  1.0
  Eu  Eu1  3  0.0  0.0  0.49  1.0
  Tm  Tm2  3  0.0  0.0  0.32  1.0
  B  B3  3  0.0  0.0  0.0  1.0

Eu Eu Tm B
TmEu2B crystallizes in the trigonal R3m space group. Tm(1) is bonded to one Eu(1), one Eu(2), and three equivalent B(1) atoms to form TmEu2B3 trigonal bipyramids that share corners with six equivalent Tm(1)Eu2B3 trigonal bipyramids and  a cornercorner with one B(1)EuTm3 trigonal pyramid. The Tm(1)-Eu(1) bond length is 2.06 Å. The Tm(1)-Eu(2) bond length is 2.06 Å. All Tm(1)-B(1) bond lengths are 3.00 Å. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a distorted single-bond geometry to one Tm(1) atom. In the second Eu site, Eu(2) is bonded in a distorted linear geometry to one Tm(1) and one B(1) atom. The Eu(2)-B(1) bond length is 2.06 Å. B(1) is bonded to three equivalent Tm(1) and one Eu(2) atom to form distorted BEuTm3 trigonal pyramids that share  a cornercorner with one Tm(1)Eu2B3 trigonal bipyramid and corners with six equivalent B(1)EuTm3 trigonal pyramids.