The crystal structure described by TmAlB4 crystallizes in the orthorhombic Pbam space group. Tm(1) is bonded in a 14-coordinate geometry to two equivalent B(3), four equivalent B(1), four equivalent B(2), and four equivalent B(4) atoms. Al(1) is bonded in a 10-coordinate geometry to two equivalent B(1), two equivalent B(2), two equivalent B(4), and four equivalent B(3) atoms. There are four inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to four equivalent Tm(1), two equivalent Al(1), one B(2), and two equivalent B(4) atoms. In the second B site, B(2) is bonded in a 9-coordinate geometry to four equivalent Tm(1), two equivalent Al(1), one B(1), one B(2), and one B(3) atom. In the third B site, B(3) is bonded in a 9-coordinate geometry to two equivalent Tm(1), four equivalent Al(1), one B(2), one B(3), and one B(4) atom. In the fourth B site, B(4) is bonded in a 9-coordinate geometry to four equivalent Tm(1), two equivalent Al(1), one B(3), and two equivalent B(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_TmAlB4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.521
_cell_length_b   5.922
_cell_length_c   11.481
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   239.400
_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
  Tm  Tm0  1  0.000  0.630  0.350  1.0
  Tm  Tm1  1  0.000  0.370  0.650  1.0
  Tm  Tm2  1  0.000  0.130  0.150  1.0
  Tm  Tm3  1  0.000  0.870  0.850  1.0
  Al  Al4  1  0.000  0.638  0.090  1.0
  Al  Al5  1  0.000  0.362  0.910  1.0
  Al  Al6  1  0.000  0.138  0.410  1.0
  Al  Al7  1  0.000  0.862  0.590  1.0
  B  B8  1  0.500  0.790  0.188  1.0
  B  B9  1  0.500  0.210  0.812  1.0
  B  B10  1  0.500  0.290  0.312  1.0
  B  B11  1  0.500  0.710  0.688  1.0
  B  B12  1  0.500  0.867  0.031  1.0
  B  B13  1  0.500  0.133  0.969  1.0
  B  B14  1  0.500  0.367  0.469  1.0
  B  B15  1  0.500  0.633  0.531  1.0
  B  B16  1  0.500  0.886  0.453  1.0
  B  B17  1  0.500  0.114  0.547  1.0
  B  B18  1  0.500  0.386  0.047  1.0
  B  B19  1  0.500  0.614  0.953  1.0
  B  B20  1  0.500  0.974  0.307  1.0
  B  B21  1  0.500  0.026  0.693  1.0
  B  B22  1  0.500  0.474  0.193  1.0
  B  B23  1  0.500  0.526  0.807  1.0
[/CIF]
.
The crystal structure described by TmAlB4 crystallizes in the orthorhombic Pbam space group. Tm(1) is bonded in a 14-coordinate geometry to two equivalent B(3), four equivalent B(1), four equivalent B(2), and four equivalent B(4) atoms. Al(1) is bonded in a 10-coordinate geometry to two equivalent B(1), two equivalent B(2), two equivalent B(4), and four equivalent B(3) atoms. There are four inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to four equivalent Tm(1), two equivalent Al(1), one B(2), and two equivalent B(4) atoms. In the second B site, B(2) is bonded in a 9-coordinate geometry to four equivalent Tm(1), two equivalent Al(1), one B(1), one B(2), and one B(3) atom. In the third B site, B(3) is bonded in a 9-coordinate geometry to two equivalent Tm(1), four equivalent Al(1), one B(2), one B(3), and one B(4) atom. In the fourth B site, B(4) is bonded in a 9-coordinate geometry to four equivalent Tm(1), two equivalent Al(1), one B(3), and two equivalent B(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_TmAlB4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.521
_cell_length_b   5.922
_cell_length_c   11.481
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   239.400
_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
  Tm  Tm0  1  0.000  0.630  0.350  1.0
  Tm  Tm1  1  0.000  0.370  0.650  1.0
  Tm  Tm2  1  0.000  0.130  0.150  1.0
  Tm  Tm3  1  0.000  0.870  0.850  1.0
  Al  Al4  1  0.000  0.638  0.090  1.0
  Al  Al5  1  0.000  0.362  0.910  1.0
  Al  Al6  1  0.000  0.138  0.410  1.0
  Al  Al7  1  0.000  0.862  0.590  1.0
  B  B8  1  0.500  0.790  0.188  1.0
  B  B9  1  0.500  0.210  0.812  1.0
  B  B10  1  0.500  0.290  0.312  1.0
  B  B11  1  0.500  0.710  0.688  1.0
  B  B12  1  0.500  0.867  0.031  1.0
  B  B13  1  0.500  0.133  0.969  1.0
  B  B14  1  0.500  0.367  0.469  1.0
  B  B15  1  0.500  0.633  0.531  1.0
  B  B16  1  0.500  0.886  0.453  1.0
  B  B17  1  0.500  0.114  0.547  1.0
  B  B18  1  0.500  0.386  0.047  1.0
  B  B19  1  0.500  0.614  0.953  1.0
  B  B20  1  0.500  0.974  0.307  1.0
  B  B21  1  0.500  0.026  0.693  1.0
  B  B22  1  0.500  0.474  0.193  1.0
  B  B23  1  0.500  0.526  0.807  1.0
[/CIF]
.