The crystal structure described by HoMo3B7 crystallizes in the orthorhombic Pnma space group. Ho(1) is bonded in a 12-coordinate geometry to one B(4), one B(7), two equivalent B(1), two equivalent B(2), two equivalent B(3), two equivalent B(6), and three equivalent B(5) atoms. There are three inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 9-coordinate geometry to one B(1), one B(2), one B(3), two equivalent B(4), two equivalent B(6), and two equivalent B(7) atoms. In the second Mo site, Mo(2) is bonded in a 9-coordinate geometry to one B(2), one B(7), two equivalent B(3), two equivalent B(6), and three equivalent B(5) atoms. In the third Mo site, Mo(3) is bonded to one B(3), one B(6), two equivalent B(2), two equivalent B(7), three equivalent B(1), and three equivalent B(4) atoms to form face-sharing MoB12 cuboctahedra. There are seven inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Mo(1), three equivalent Mo(3), one B(2), and two equivalent B(4) atoms. In the second B site, B(2) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Mo(1), one Mo(2), two equivalent Mo(3), one B(1), and two equivalent B(6) atoms. In the third B site, B(3) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Mo(1), one Mo(3), two equivalent Mo(2), one B(5), and two equivalent B(7) atoms. In the fourth B site, B(4) is bonded in a 9-coordinate geometry to one Ho(1), two equivalent Mo(1), three equivalent Mo(3), one B(7), and two equivalent B(1) atoms. In the fifth B site, B(5) is bonded in a 9-coordinate geometry to three equivalent Ho(1), three equivalent Mo(2), one B(3), and two equivalent B(5) atoms. In the sixth B site, B(6) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Mo(3), two equivalent Mo(1), two equivalent Mo(2), and two equivalent B(2) atoms. In the seventh B site, B(7) is bonded in a 9-coordinate geometry to one Ho(1), one Mo(2), two equivalent Mo(1), two equivalent Mo(3), one B(4), and two equivalent B(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_HoB7Mo3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.094
_cell_length_b   11.003
_cell_length_c   12.832
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   436.819
_cell_formula_units_Z   4
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
  Ho  Ho0  1  0.750  0.449  0.808  1.0
  Ho  Ho1  1  0.250  0.551  0.192  1.0
  Ho  Ho2  1  0.750  0.949  0.692  1.0
  Ho  Ho3  1  0.250  0.051  0.308  1.0
  B  B4  1  0.750  0.011  0.138  1.0
  B  B5  1  0.250  0.989  0.862  1.0
  B  B6  1  0.750  0.511  0.362  1.0
  B  B7  1  0.250  0.489  0.638  1.0
  B  B8  1  0.750  0.166  0.167  1.0
  B  B9  1  0.250  0.834  0.833  1.0
  B  B10  1  0.750  0.666  0.333  1.0
  B  B11  1  0.250  0.334  0.667  1.0
  B  B12  1  0.750  0.186  0.433  1.0
  B  B13  1  0.250  0.814  0.567  1.0
  B  B14  1  0.750  0.686  0.067  1.0
  B  B15  1  0.250  0.314  0.933  1.0
  B  B16  1  0.750  0.068  0.884  1.0
  B  B17  1  0.250  0.932  0.116  1.0
  B  B18  1  0.750  0.568  0.616  1.0
  B  B19  1  0.250  0.432  0.384  1.0
  B  B20  1  0.750  0.037  0.482  1.0
  B  B21  1  0.250  0.963  0.518  1.0
  B  B22  1  0.750  0.537  0.018  1.0
  B  B23  1  0.250  0.463  0.982  1.0
  B  B24  1  0.750  0.249  0.674  1.0
  B  B25  1  0.250  0.751  0.326  1.0
  B  B26  1  0.750  0.749  0.826  1.0
  B  B27  1  0.250  0.251  0.174  1.0
  B  B28  1  0.750  0.231  0.918  1.0
  B  B29  1  0.250  0.769  0.082  1.0
  B  B30  1  0.750  0.731  0.582  1.0
  B  B31  1  0.250  0.269  0.418  1.0
  Mo  Mo32  1  0.750  0.316  0.298  1.0
  Mo  Mo33  1  0.250  0.684  0.702  1.0
  Mo  Mo34  1  0.750  0.816  0.202  1.0
  Mo  Mo35  1  0.250  0.184  0.798  1.0
  Mo  Mo36  1  0.750  0.340  0.064  1.0
  Mo  Mo37  1  0.250  0.660  0.936  1.0
  Mo  Mo38  1  0.750  0.840  0.436  1.0
  Mo  Mo39  1  0.250  0.160  0.564  1.0
  Mo  Mo40  1  0.750  0.382  0.527  1.0
  Mo  Mo41  1  0.250  0.618  0.473  1.0
  Mo  Mo42  1  0.750  0.882  0.973  1.0
  Mo  Mo43  1  0.250  0.118  0.027  1.0
[/CIF]
.
The crystal structure described by HoMo3B7 crystallizes in the orthorhombic Pnma space group. Ho(1) is bonded in a 12-coordinate geometry to one B(4), one B(7), two equivalent B(1), two equivalent B(2), two equivalent B(3), two equivalent B(6), and three equivalent B(5) atoms. There are three inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 9-coordinate geometry to one B(1), one B(2), one B(3), two equivalent B(4), two equivalent B(6), and two equivalent B(7) atoms. In the second Mo site, Mo(2) is bonded in a 9-coordinate geometry to one B(2), one B(7), two equivalent B(3), two equivalent B(6), and three equivalent B(5) atoms. In the third Mo site, Mo(3) is bonded to one B(3), one B(6), two equivalent B(2), two equivalent B(7), three equivalent B(1), and three equivalent B(4) atoms to form face-sharing MoB12 cuboctahedra. There are seven inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Mo(1), three equivalent Mo(3), one B(2), and two equivalent B(4) atoms. In the second B site, B(2) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Mo(1), one Mo(2), two equivalent Mo(3), one B(1), and two equivalent B(6) atoms. In the third B site, B(3) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Mo(1), one Mo(3), two equivalent Mo(2), one B(5), and two equivalent B(7) atoms. In the fourth B site, B(4) is bonded in a 9-coordinate geometry to one Ho(1), two equivalent Mo(1), three equivalent Mo(3), one B(7), and two equivalent B(1) atoms. In the fifth B site, B(5) is bonded in a 9-coordinate geometry to three equivalent Ho(1), three equivalent Mo(2), one B(3), and two equivalent B(5) atoms. In the sixth B site, B(6) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Mo(3), two equivalent Mo(1), two equivalent Mo(2), and two equivalent B(2) atoms. In the seventh B site, B(7) is bonded in a 9-coordinate geometry to one Ho(1), one Mo(2), two equivalent Mo(1), two equivalent Mo(3), one B(4), and two equivalent B(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_HoB7Mo3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.094
_cell_length_b   11.003
_cell_length_c   12.832
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   436.819
_cell_formula_units_Z   4
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
  Ho  Ho0  1  0.750  0.449  0.808  1.0
  Ho  Ho1  1  0.250  0.551  0.192  1.0
  Ho  Ho2  1  0.750  0.949  0.692  1.0
  Ho  Ho3  1  0.250  0.051  0.308  1.0
  B  B4  1  0.750  0.011  0.138  1.0
  B  B5  1  0.250  0.989  0.862  1.0
  B  B6  1  0.750  0.511  0.362  1.0
  B  B7  1  0.250  0.489  0.638  1.0
  B  B8  1  0.750  0.166  0.167  1.0
  B  B9  1  0.250  0.834  0.833  1.0
  B  B10  1  0.750  0.666  0.333  1.0
  B  B11  1  0.250  0.334  0.667  1.0
  B  B12  1  0.750  0.186  0.433  1.0
  B  B13  1  0.250  0.814  0.567  1.0
  B  B14  1  0.750  0.686  0.067  1.0
  B  B15  1  0.250  0.314  0.933  1.0
  B  B16  1  0.750  0.068  0.884  1.0
  B  B17  1  0.250  0.932  0.116  1.0
  B  B18  1  0.750  0.568  0.616  1.0
  B  B19  1  0.250  0.432  0.384  1.0
  B  B20  1  0.750  0.037  0.482  1.0
  B  B21  1  0.250  0.963  0.518  1.0
  B  B22  1  0.750  0.537  0.018  1.0
  B  B23  1  0.250  0.463  0.982  1.0
  B  B24  1  0.750  0.249  0.674  1.0
  B  B25  1  0.250  0.751  0.326  1.0
  B  B26  1  0.750  0.749  0.826  1.0
  B  B27  1  0.250  0.251  0.174  1.0
  B  B28  1  0.750  0.231  0.918  1.0
  B  B29  1  0.250  0.769  0.082  1.0
  B  B30  1  0.750  0.731  0.582  1.0
  B  B31  1  0.250  0.269  0.418  1.0
  Mo  Mo32  1  0.750  0.316  0.298  1.0
  Mo  Mo33  1  0.250  0.684  0.702  1.0
  Mo  Mo34  1  0.750  0.816  0.202  1.0
  Mo  Mo35  1  0.250  0.184  0.798  1.0
  Mo  Mo36  1  0.750  0.340  0.064  1.0
  Mo  Mo37  1  0.250  0.660  0.936  1.0
  Mo  Mo38  1  0.750  0.840  0.436  1.0
  Mo  Mo39  1  0.250  0.160  0.564  1.0
  Mo  Mo40  1  0.750  0.382  0.527  1.0
  Mo  Mo41  1  0.250  0.618  0.473  1.0
  Mo  Mo42  1  0.750  0.882  0.973  1.0
  Mo  Mo43  1  0.250  0.118  0.027  1.0
[/CIF]
.