The compound described by Tm4Ni10Ga21 crystallizes in the monoclinic C2/m space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 15-coordinate geometry to two equivalent Ni(1), two equivalent Ni(3), one Ga(4), one Ga(6), one Ga(8), one Ga(9), two equivalent Ga(1), two equivalent Ga(11), and three equivalent Ga(3) atoms. In the second Tm site, Tm(2) is bonded in a 14-coordinate geometry to two equivalent Ni(2), two equivalent Ni(4), one Ga(11), one Ga(7), one Ga(9), two equivalent Ga(5), two equivalent Ga(6), and three equivalent Ga(2) atoms. There are five inequivalent Ni sites. In the first Ni site, Ni(4) is bonded in a 10-coordinate geometry to two equivalent Tm(2), one Ni(1), one Ga(5), one Ga(7), two equivalent Ga(9), and three equivalent Ga(2) atoms. In the second Ni site, Ni(5) is bonded in a 9-coordinate geometry to one Ga(9), two equivalent Ga(1), two equivalent Ga(10), two equivalent Ga(4), and two equivalent Ga(5) atoms. In the third Ni site, Ni(1) is bonded in a 10-coordinate geometry to two equivalent Tm(1), one Ni(4), one Ga(1), one Ga(11), one Ga(7), two equivalent Ga(8), and two equivalent Ga(9) atoms. In the fourth Ni site, Ni(2) is bonded in a 10-coordinate geometry to two equivalent Tm(2), one Ga(2), one Ga(6), two equivalent Ga(11), two equivalent Ga(7), and two equivalent Ga(8) atoms. In the fifth Ni site, Ni(3) is bonded in a 9-coordinate geometry to two equivalent Tm(1), one Ga(11), one Ga(4), two equivalent Ga(6), and three equivalent Ga(3) atoms. There are eleven inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 5-coordinate geometry to two equivalent Tm(1), one Ni(1), two equivalent Ni(5), one Ga(10), and one Ga(3) atom. In the second Ga site, Ga(2) is bonded in a 12-coordinate geometry to three equivalent Tm(2), one Ni(2), three equivalent Ni(4), one Ga(9), two equivalent Ga(2), and two equivalent Ga(7) atoms. In the third Ga site, Ga(3) is bonded in a 12-coordinate geometry to three equivalent Tm(1), three equivalent Ni(3), one Ga(1), one Ga(6), two equivalent Ga(3), and two equivalent Ga(4) atoms. In the fourth Ga site, Ga(4) is bonded in a 3-coordinate geometry to one Tm(1), one Ni(3), two equivalent Ni(5), two equivalent Ga(10), and two equivalent Ga(3) atoms. In the fifth Ga site, Ga(5) is bonded in a 5-coordinate geometry to two equivalent Tm(2), one Ni(4), two equivalent Ni(5), one Ga(10), and one Ga(6) atom. In the sixth Ga site, Ga(6) is bonded in a 10-coordinate geometry to one Tm(1), two equivalent Tm(2), one Ni(2), two equivalent Ni(3), one Ga(3), one Ga(5), and two equivalent Ga(11) atoms. In the seventh Ga site, Ga(7) is bonded in a 10-coordinate geometry to one Tm(2), one Ni(1), one Ni(4), two equivalent Ni(2), one Ga(11), two equivalent Ga(2), and two equivalent Ga(8) atoms. In the eighth Ga site, Ga(8) is bonded in a 11-coordinate geometry to one Tm(1), two equivalent Ni(1), two equivalent Ni(2), one Ga(8), one Ga(9), two equivalent Ga(11), and two equivalent Ga(7) atoms. In the ninth Ga site, Ga(9) is bonded in a 5-coordinate geometry to one Tm(1), one Tm(2), one Ni(5), two equivalent Ni(1), two equivalent Ni(4), one Ga(2), and one Ga(8) atom. In the tenth Ga site, Ga(10) is bonded in a 12-coordinate geometry to four equivalent Ni(5), two equivalent Ga(1), two equivalent Ga(5), and four equivalent Ga(4) atoms. In the eleventh Ga site, Ga(11) is bonded in a 12-coordinate geometry to one Tm(2), two equivalent Tm(1), one Ni(1), one Ni(3), two equivalent Ni(2), one Ga(7), two equivalent Ga(6), and two equivalent Ga(8) atoms. is represented by the CIF file [CIF]
data_Tm4Ga21Ni10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.581
_cell_length_b   10.581
_cell_length_c   15.506
_cell_angle_alpha   57.032
_cell_angle_beta   57.032
_cell_angle_gamma   22.048
_symmetry_Int_Tables_number   1
_cell_volume   542.341
_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
  Tm  Tm0  1  0.880  0.880  0.333  1.0
  Tm  Tm1  1  0.120  0.120  0.667  1.0
  Tm  Tm2  1  0.231  0.231  0.173  1.0
  Tm  Tm3  1  0.769  0.769  0.827  1.0
  Ga  Ga4  1  0.460  0.460  0.367  1.0
  Ga  Ga5  1  0.540  0.540  0.633  1.0
  Ga  Ga6  1  0.798  0.798  0.004  1.0
  Ga  Ga7  1  0.202  0.202  0.996  1.0
  Ga  Ga8  1  0.702  0.702  0.497  1.0
  Ga  Ga9  1  0.298  0.298  0.503  1.0
  Ga  Ga10  1  0.883  0.883  0.552  1.0
  Ga  Ga11  1  0.117  0.117  0.448  1.0
  Ga  Ga12  1  0.615  0.615  0.296  1.0
  Ga  Ga13  1  0.385  0.385  0.704  1.0
  Ga  Ga14  1  0.753  0.753  0.293  1.0
  Ga  Ga15  1  0.247  0.247  0.707  1.0
  Ga  Ga16  1  0.602  0.602  0.004  1.0
  Ga  Ga17  1  0.398  0.398  0.996  1.0
  Ga  Ga18  1  0.993  0.993  0.091  1.0
  Ga  Ga19  1  0.007  0.007  0.909  1.0
  Ga  Ga20  1  0.935  0.935  0.796  1.0
  Ga  Ga21  1  0.065  0.065  0.204  1.0
  Ga  Ga22  1  0.500  0.500  0.500  1.0
  Ga  Ga23  1  0.372  0.372  0.196  1.0
  Ga  Ga24  1  0.628  0.628  0.804  1.0
  Ni  Ni25  1  0.498  0.498  0.185  1.0
  Ni  Ni26  1  0.502  0.502  0.815  1.0
  Ni  Ni27  1  0.866  0.866  0.105  1.0
  Ni  Ni28  1  0.134  0.134  0.895  1.0
  Ni  Ni29  1  0.749  0.749  0.615  1.0
  Ni  Ni30  1  0.251  0.251  0.385  1.0
  Ni  Ni31  1  0.653  0.653  0.114  1.0
  Ni  Ni32  1  0.347  0.347  0.886  1.0
  Ni  Ni33  1  0.976  0.976  0.607  1.0
  Ni  Ni34  1  0.024  0.024  0.393  1.0
[/CIF]
.
The compound described by Tm4Ni10Ga21 crystallizes in the monoclinic C2/m space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 15-coordinate geometry to two equivalent Ni(1), two equivalent Ni(3), one Ga(4), one Ga(6), one Ga(8), one Ga(9), two equivalent Ga(1), two equivalent Ga(11), and three equivalent Ga(3) atoms. In the second Tm site, Tm(2) is bonded in a 14-coordinate geometry to two equivalent Ni(2), two equivalent Ni(4), one Ga(11), one Ga(7), one Ga(9), two equivalent Ga(5), two equivalent Ga(6), and three equivalent Ga(2) atoms. There are five inequivalent Ni sites. In the first Ni site, Ni(4) is bonded in a 10-coordinate geometry to two equivalent Tm(2), one Ni(1), one Ga(5), one Ga(7), two equivalent Ga(9), and three equivalent Ga(2) atoms. In the second Ni site, Ni(5) is bonded in a 9-coordinate geometry to one Ga(9), two equivalent Ga(1), two equivalent Ga(10), two equivalent Ga(4), and two equivalent Ga(5) atoms. In the third Ni site, Ni(1) is bonded in a 10-coordinate geometry to two equivalent Tm(1), one Ni(4), one Ga(1), one Ga(11), one Ga(7), two equivalent Ga(8), and two equivalent Ga(9) atoms. In the fourth Ni site, Ni(2) is bonded in a 10-coordinate geometry to two equivalent Tm(2), one Ga(2), one Ga(6), two equivalent Ga(11), two equivalent Ga(7), and two equivalent Ga(8) atoms. In the fifth Ni site, Ni(3) is bonded in a 9-coordinate geometry to two equivalent Tm(1), one Ga(11), one Ga(4), two equivalent Ga(6), and three equivalent Ga(3) atoms. There are eleven inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 5-coordinate geometry to two equivalent Tm(1), one Ni(1), two equivalent Ni(5), one Ga(10), and one Ga(3) atom. In the second Ga site, Ga(2) is bonded in a 12-coordinate geometry to three equivalent Tm(2), one Ni(2), three equivalent Ni(4), one Ga(9), two equivalent Ga(2), and two equivalent Ga(7) atoms. In the third Ga site, Ga(3) is bonded in a 12-coordinate geometry to three equivalent Tm(1), three equivalent Ni(3), one Ga(1), one Ga(6), two equivalent Ga(3), and two equivalent Ga(4) atoms. In the fourth Ga site, Ga(4) is bonded in a 3-coordinate geometry to one Tm(1), one Ni(3), two equivalent Ni(5), two equivalent Ga(10), and two equivalent Ga(3) atoms. In the fifth Ga site, Ga(5) is bonded in a 5-coordinate geometry to two equivalent Tm(2), one Ni(4), two equivalent Ni(5), one Ga(10), and one Ga(6) atom. In the sixth Ga site, Ga(6) is bonded in a 10-coordinate geometry to one Tm(1), two equivalent Tm(2), one Ni(2), two equivalent Ni(3), one Ga(3), one Ga(5), and two equivalent Ga(11) atoms. In the seventh Ga site, Ga(7) is bonded in a 10-coordinate geometry to one Tm(2), one Ni(1), one Ni(4), two equivalent Ni(2), one Ga(11), two equivalent Ga(2), and two equivalent Ga(8) atoms. In the eighth Ga site, Ga(8) is bonded in a 11-coordinate geometry to one Tm(1), two equivalent Ni(1), two equivalent Ni(2), one Ga(8), one Ga(9), two equivalent Ga(11), and two equivalent Ga(7) atoms. In the ninth Ga site, Ga(9) is bonded in a 5-coordinate geometry to one Tm(1), one Tm(2), one Ni(5), two equivalent Ni(1), two equivalent Ni(4), one Ga(2), and one Ga(8) atom. In the tenth Ga site, Ga(10) is bonded in a 12-coordinate geometry to four equivalent Ni(5), two equivalent Ga(1), two equivalent Ga(5), and four equivalent Ga(4) atoms. In the eleventh Ga site, Ga(11) is bonded in a 12-coordinate geometry to one Tm(2), two equivalent Tm(1), one Ni(1), one Ni(3), two equivalent Ni(2), one Ga(7), two equivalent Ga(6), and two equivalent Ga(8) atoms. is represented by the CIF file [CIF]
data_Tm4Ga21Ni10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.581
_cell_length_b   10.581
_cell_length_c   15.506
_cell_angle_alpha   57.032
_cell_angle_beta   57.032
_cell_angle_gamma   22.048
_symmetry_Int_Tables_number   1
_cell_volume   542.341
_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
  Tm  Tm0  1  0.880  0.880  0.333  1.0
  Tm  Tm1  1  0.120  0.120  0.667  1.0
  Tm  Tm2  1  0.231  0.231  0.173  1.0
  Tm  Tm3  1  0.769  0.769  0.827  1.0
  Ga  Ga4  1  0.460  0.460  0.367  1.0
  Ga  Ga5  1  0.540  0.540  0.633  1.0
  Ga  Ga6  1  0.798  0.798  0.004  1.0
  Ga  Ga7  1  0.202  0.202  0.996  1.0
  Ga  Ga8  1  0.702  0.702  0.497  1.0
  Ga  Ga9  1  0.298  0.298  0.503  1.0
  Ga  Ga10  1  0.883  0.883  0.552  1.0
  Ga  Ga11  1  0.117  0.117  0.448  1.0
  Ga  Ga12  1  0.615  0.615  0.296  1.0
  Ga  Ga13  1  0.385  0.385  0.704  1.0
  Ga  Ga14  1  0.753  0.753  0.293  1.0
  Ga  Ga15  1  0.247  0.247  0.707  1.0
  Ga  Ga16  1  0.602  0.602  0.004  1.0
  Ga  Ga17  1  0.398  0.398  0.996  1.0
  Ga  Ga18  1  0.993  0.993  0.091  1.0
  Ga  Ga19  1  0.007  0.007  0.909  1.0
  Ga  Ga20  1  0.935  0.935  0.796  1.0
  Ga  Ga21  1  0.065  0.065  0.204  1.0
  Ga  Ga22  1  0.500  0.500  0.500  1.0
  Ga  Ga23  1  0.372  0.372  0.196  1.0
  Ga  Ga24  1  0.628  0.628  0.804  1.0
  Ni  Ni25  1  0.498  0.498  0.185  1.0
  Ni  Ni26  1  0.502  0.502  0.815  1.0
  Ni  Ni27  1  0.866  0.866  0.105  1.0
  Ni  Ni28  1  0.134  0.134  0.895  1.0
  Ni  Ni29  1  0.749  0.749  0.615  1.0
  Ni  Ni30  1  0.251  0.251  0.385  1.0
  Ni  Ni31  1  0.653  0.653  0.114  1.0
  Ni  Ni32  1  0.347  0.347  0.886  1.0
  Ni  Ni33  1  0.976  0.976  0.607  1.0
  Ni  Ni34  1  0.024  0.024  0.393  1.0
[/CIF]
.