The crystal structure described by Tm11Sn10 crystallizes in the tetragonal I4/mmm space group. There are four inequivalent Tm sites. In the first Tm site, Tm(1) is bonded to one Sn(1), one Sn(2), one Sn(4), and four equivalent Sn(5) atoms to form a mixture of distorted edge, face, and corner-sharing TmSn7 pentagonal bipyramids. In the second Tm site, Tm(2) is bonded in a 7-coordinate geometry to one Sn(3), two equivalent Sn(1), two equivalent Sn(2), and two equivalent Sn(5) atoms. In the third Tm site, Tm(3) is bonded in a 9-coordinate geometry to one Sn(2), four equivalent Sn(3), and four equivalent Sn(5) atoms. In the fourth Tm site, Tm(4) is bonded in a 7-coordinate geometry to one Sn(4), two equivalent Sn(1), two equivalent Sn(3), and two equivalent Sn(5) atoms. There are five inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 8-coordinate geometry to two equivalent Tm(1), two equivalent Tm(2), and four equivalent Tm(4) atoms. In the second Sn site, Sn(2) is bonded in a 9-coordinate geometry to one Tm(3), four equivalent Tm(1), and four equivalent Tm(2) atoms. In the third Sn site, Sn(3) is bonded in a 11-coordinate geometry to one Tm(2), two equivalent Tm(3), four equivalent Tm(4), two equivalent Sn(3), and two equivalent Sn(5) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to four equivalent Tm(1) and four equivalent Tm(4) atoms. In the fifth Sn site, Sn(5) is bonded in a 10-coordinate geometry to one Tm(2), one Tm(3), two equivalent Tm(4), four equivalent Tm(1), one Sn(3), and one Sn(5) atom. is represented by the CIF card [CIF]
data_Tm11Sn10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.455
_cell_length_b   11.455
_cell_length_c   11.669
_cell_angle_alpha   119.395
_cell_angle_beta   119.395
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1102.127
_cell_formula_units_Z   2
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  0.937  0.189  0.378  1.0
  Tm  Tm1  1  0.441  0.189  0.378  1.0
  Tm  Tm2  1  0.189  0.441  0.378  1.0
  Tm  Tm3  1  0.189  0.937  0.378  1.0
  Tm  Tm4  1  0.063  0.811  0.622  1.0
  Tm  Tm5  1  0.559  0.811  0.622  1.0
  Tm  Tm6  1  0.811  0.559  0.622  1.0
  Tm  Tm7  1  0.811  0.063  0.622  1.0
  Tm  Tm8  1  0.826  0.174  0.000  1.0
  Tm  Tm9  1  0.174  0.826  0.000  1.0
  Tm  Tm10  1  0.174  0.174  0.000  1.0
  Tm  Tm11  1  0.826  0.826  0.000  1.0
  Tm  Tm12  1  0.335  0.335  0.670  1.0
  Tm  Tm13  1  0.665  0.665  0.330  1.0
  Tm  Tm14  1  0.067  0.398  0.797  1.0
  Tm  Tm15  1  0.729  0.398  0.797  1.0
  Tm  Tm16  1  0.398  0.729  0.797  1.0
  Tm  Tm17  1  0.398  0.067  0.797  1.0
  Tm  Tm18  1  0.933  0.602  0.203  1.0
  Tm  Tm19  1  0.271  0.602  0.203  1.0
  Tm  Tm20  1  0.602  0.271  0.203  1.0
  Tm  Tm21  1  0.602  0.933  0.203  1.0
  Sn  Sn22  1  0.000  0.354  0.000  1.0
  Sn  Sn23  1  0.000  0.646  0.000  1.0
  Sn  Sn24  1  0.354  0.000  0.000  1.0
  Sn  Sn25  1  0.646  0.000  0.000  1.0
  Sn  Sn26  1  0.116  0.116  0.231  1.0
  Sn  Sn27  1  0.884  0.884  0.769  1.0
  Sn  Sn28  1  0.629  0.371  1.000  1.0
  Sn  Sn29  1  0.371  0.629  1.000  1.0
  Sn  Sn30  1  0.371  0.371  1.000  1.0
  Sn  Sn31  1  0.629  0.629  1.000  1.0
  Sn  Sn32  1  0.750  0.250  0.500  1.0
  Sn  Sn33  1  0.250  0.750  0.500  1.0
  Sn  Sn34  1  0.119  0.529  0.648  1.0
  Sn  Sn35  1  0.529  0.119  0.648  1.0
  Sn  Sn36  1  0.529  0.529  0.648  1.0
  Sn  Sn37  1  0.119  0.119  0.648  1.0
  Sn  Sn38  1  0.881  0.471  0.352  1.0
  Sn  Sn39  1  0.471  0.881  0.352  1.0
  Sn  Sn40  1  0.471  0.471  0.352  1.0
  Sn  Sn41  1  0.881  0.881  0.352  1.0
[/CIF]
.
The crystal structure described by Tm11Sn10 crystallizes in the tetragonal I4/mmm space group. There are four inequivalent Tm sites. In the first Tm site, Tm(1) is bonded to one Sn(1), one Sn(2), one Sn(4), and four equivalent Sn(5) atoms to form a mixture of distorted edge, face, and corner-sharing TmSn7 pentagonal bipyramids. In the second Tm site, Tm(2) is bonded in a 7-coordinate geometry to one Sn(3), two equivalent Sn(1), two equivalent Sn(2), and two equivalent Sn(5) atoms. In the third Tm site, Tm(3) is bonded in a 9-coordinate geometry to one Sn(2), four equivalent Sn(3), and four equivalent Sn(5) atoms. In the fourth Tm site, Tm(4) is bonded in a 7-coordinate geometry to one Sn(4), two equivalent Sn(1), two equivalent Sn(3), and two equivalent Sn(5) atoms. There are five inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 8-coordinate geometry to two equivalent Tm(1), two equivalent Tm(2), and four equivalent Tm(4) atoms. In the second Sn site, Sn(2) is bonded in a 9-coordinate geometry to one Tm(3), four equivalent Tm(1), and four equivalent Tm(2) atoms. In the third Sn site, Sn(3) is bonded in a 11-coordinate geometry to one Tm(2), two equivalent Tm(3), four equivalent Tm(4), two equivalent Sn(3), and two equivalent Sn(5) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to four equivalent Tm(1) and four equivalent Tm(4) atoms. In the fifth Sn site, Sn(5) is bonded in a 10-coordinate geometry to one Tm(2), one Tm(3), two equivalent Tm(4), four equivalent Tm(1), one Sn(3), and one Sn(5) atom. is represented by the CIF card [CIF]
data_Tm11Sn10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.455
_cell_length_b   11.455
_cell_length_c   11.669
_cell_angle_alpha   119.395
_cell_angle_beta   119.395
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1102.127
_cell_formula_units_Z   2
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  0.937  0.189  0.378  1.0
  Tm  Tm1  1  0.441  0.189  0.378  1.0
  Tm  Tm2  1  0.189  0.441  0.378  1.0
  Tm  Tm3  1  0.189  0.937  0.378  1.0
  Tm  Tm4  1  0.063  0.811  0.622  1.0
  Tm  Tm5  1  0.559  0.811  0.622  1.0
  Tm  Tm6  1  0.811  0.559  0.622  1.0
  Tm  Tm7  1  0.811  0.063  0.622  1.0
  Tm  Tm8  1  0.826  0.174  0.000  1.0
  Tm  Tm9  1  0.174  0.826  0.000  1.0
  Tm  Tm10  1  0.174  0.174  0.000  1.0
  Tm  Tm11  1  0.826  0.826  0.000  1.0
  Tm  Tm12  1  0.335  0.335  0.670  1.0
  Tm  Tm13  1  0.665  0.665  0.330  1.0
  Tm  Tm14  1  0.067  0.398  0.797  1.0
  Tm  Tm15  1  0.729  0.398  0.797  1.0
  Tm  Tm16  1  0.398  0.729  0.797  1.0
  Tm  Tm17  1  0.398  0.067  0.797  1.0
  Tm  Tm18  1  0.933  0.602  0.203  1.0
  Tm  Tm19  1  0.271  0.602  0.203  1.0
  Tm  Tm20  1  0.602  0.271  0.203  1.0
  Tm  Tm21  1  0.602  0.933  0.203  1.0
  Sn  Sn22  1  0.000  0.354  0.000  1.0
  Sn  Sn23  1  0.000  0.646  0.000  1.0
  Sn  Sn24  1  0.354  0.000  0.000  1.0
  Sn  Sn25  1  0.646  0.000  0.000  1.0
  Sn  Sn26  1  0.116  0.116  0.231  1.0
  Sn  Sn27  1  0.884  0.884  0.769  1.0
  Sn  Sn28  1  0.629  0.371  1.000  1.0
  Sn  Sn29  1  0.371  0.629  1.000  1.0
  Sn  Sn30  1  0.371  0.371  1.000  1.0
  Sn  Sn31  1  0.629  0.629  1.000  1.0
  Sn  Sn32  1  0.750  0.250  0.500  1.0
  Sn  Sn33  1  0.250  0.750  0.500  1.0
  Sn  Sn34  1  0.119  0.529  0.648  1.0
  Sn  Sn35  1  0.529  0.119  0.648  1.0
  Sn  Sn36  1  0.529  0.529  0.648  1.0
  Sn  Sn37  1  0.119  0.119  0.648  1.0
  Sn  Sn38  1  0.881  0.471  0.352  1.0
  Sn  Sn39  1  0.471  0.881  0.352  1.0
  Sn  Sn40  1  0.471  0.471  0.352  1.0
  Sn  Sn41  1  0.881  0.881  0.352  1.0
[/CIF]
.