The crystal structure described by Yb3Ni19B10 crystallizes in the monoclinic C2/m space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 20-coordinate geometry to one Ni(2), one Ni(3), two equivalent Ni(1), two equivalent Ni(5), four equivalent Ni(6), four equivalent Ni(7), two equivalent B(1), two equivalent B(2), and two equivalent B(3) atoms. In the second Yb site, Yb(2) is bonded in a 14-coordinate geometry to two equivalent Ni(2), two equivalent Ni(3), two equivalent Ni(4), four equivalent Ni(5), and four equivalent Ni(6) atoms. There are seven inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 5-coordinate geometry to two equivalent Yb(1), two equivalent Ni(7), two equivalent B(2), and two equivalent B(3) atoms. In the second Ni site, Ni(2) is bonded in a 6-coordinate geometry to one Yb(1), one Yb(2), one Ni(4), two equivalent Ni(7), two equivalent B(1), and two equivalent B(2) atoms. In the third Ni site, Ni(3) is bonded in a 5-coordinate geometry to one Yb(1), one Yb(2), two equivalent Ni(7), two equivalent B(1), and two equivalent B(2) atoms. In the fourth Ni site, Ni(4) is bonded in a 12-coordinate geometry to two equivalent Yb(2), two equivalent Ni(2), four equivalent Ni(6), and four equivalent B(1) atoms. In the fifth Ni site, Ni(5) is bonded in a 4-coordinate geometry to one Yb(1), one Yb(2), two equivalent Ni(7), one B(1), one B(3), and two equivalent B(2) atoms. In the sixth Ni site, Ni(6) is bonded in a 3-coordinate geometry to one Yb(2), two equivalent Yb(1), one Ni(4), one Ni(7), one B(3), and two equivalent B(1) atoms. In the seventh Ni site, Ni(7) is bonded in a 13-coordinate geometry to two equivalent Yb(1), one Ni(1), one Ni(2), one Ni(3), one Ni(6), one Ni(7), two equivalent Ni(5), two equivalent B(1), and two equivalent B(2) atoms. There are three inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to one Yb(1), one Ni(2), one Ni(3), one Ni(4), one Ni(5), two equivalent Ni(6), and two equivalent Ni(7) atoms. In the second B site, B(2) is bonded in a 9-coordinate geometry to one Yb(1), one Ni(1), one Ni(2), one Ni(3), two equivalent Ni(5), two equivalent Ni(7), and one B(2) atom. In the third B site, B(3) is bonded in a 9-coordinate geometry to two equivalent Yb(1), two equivalent Ni(1), two equivalent Ni(5), two equivalent Ni(6), and one B(3) atom. is represented by the CIF card [CIF]
data_Yb3Ni19B10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.787
_cell_length_b   7.787
_cell_length_c   5.650
_cell_angle_alpha   88.736
_cell_angle_beta   88.736
_cell_angle_gamma   67.239
_symmetry_Int_Tables_number   1
_cell_volume   315.847
_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
  Yb  Yb0  1  0.625  0.625  0.607  1.0
  Yb  Yb1  1  0.375  0.375  0.393  1.0
  Yb  Yb2  1  1.000  0.000  1.000  1.0
  Ni  Ni3  1  0.623  0.623  0.125  1.0
  Ni  Ni4  1  0.377  0.377  0.875  1.0
  Ni  Ni5  1  0.837  0.837  0.703  1.0
  Ni  Ni6  1  0.163  0.163  0.297  1.0
  Ni  Ni7  1  0.818  0.818  0.268  1.0
  Ni  Ni8  1  0.182  0.182  0.732  1.0
  Ni  Ni9  1  1.000  0.000  0.500  1.0
  Ni  Ni10  1  0.622  0.124  0.077  1.0
  Ni  Ni11  1  0.378  0.876  0.923  1.0
  Ni  Ni12  1  0.876  0.378  0.923  1.0
  Ni  Ni13  1  0.124  0.622  0.077  1.0
  Ni  Ni14  1  0.287  0.773  0.299  1.0
  Ni  Ni15  1  0.713  0.227  0.701  1.0
  Ni  Ni16  1  0.227  0.713  0.701  1.0
  Ni  Ni17  1  0.773  0.287  0.299  1.0
  Ni  Ni18  1  0.482  0.954  0.302  1.0
  Ni  Ni19  1  0.518  0.046  0.698  1.0
  Ni  Ni20  1  0.046  0.518  0.698  1.0
  Ni  Ni21  1  0.954  0.482  0.302  1.0
  B  B22  1  0.701  0.064  0.430  1.0
  B  B23  1  0.299  0.936  0.570  1.0
  B  B24  1  0.936  0.299  0.570  1.0
  B  B25  1  0.064  0.701  0.430  1.0
  B  B26  1  0.351  0.140  0.026  1.0
  B  B27  1  0.649  0.860  0.974  1.0
  B  B28  1  0.860  0.649  0.974  1.0
  B  B29  1  0.140  0.351  0.026  1.0
  B  B30  1  0.615  0.385  0.000  1.0
  B  B31  1  0.385  0.615  1.000  1.0
[/CIF]
.
The crystal structure described by Yb3Ni19B10 crystallizes in the monoclinic C2/m space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 20-coordinate geometry to one Ni(2), one Ni(3), two equivalent Ni(1), two equivalent Ni(5), four equivalent Ni(6), four equivalent Ni(7), two equivalent B(1), two equivalent B(2), and two equivalent B(3) atoms. In the second Yb site, Yb(2) is bonded in a 14-coordinate geometry to two equivalent Ni(2), two equivalent Ni(3), two equivalent Ni(4), four equivalent Ni(5), and four equivalent Ni(6) atoms. There are seven inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 5-coordinate geometry to two equivalent Yb(1), two equivalent Ni(7), two equivalent B(2), and two equivalent B(3) atoms. In the second Ni site, Ni(2) is bonded in a 6-coordinate geometry to one Yb(1), one Yb(2), one Ni(4), two equivalent Ni(7), two equivalent B(1), and two equivalent B(2) atoms. In the third Ni site, Ni(3) is bonded in a 5-coordinate geometry to one Yb(1), one Yb(2), two equivalent Ni(7), two equivalent B(1), and two equivalent B(2) atoms. In the fourth Ni site, Ni(4) is bonded in a 12-coordinate geometry to two equivalent Yb(2), two equivalent Ni(2), four equivalent Ni(6), and four equivalent B(1) atoms. In the fifth Ni site, Ni(5) is bonded in a 4-coordinate geometry to one Yb(1), one Yb(2), two equivalent Ni(7), one B(1), one B(3), and two equivalent B(2) atoms. In the sixth Ni site, Ni(6) is bonded in a 3-coordinate geometry to one Yb(2), two equivalent Yb(1), one Ni(4), one Ni(7), one B(3), and two equivalent B(1) atoms. In the seventh Ni site, Ni(7) is bonded in a 13-coordinate geometry to two equivalent Yb(1), one Ni(1), one Ni(2), one Ni(3), one Ni(6), one Ni(7), two equivalent Ni(5), two equivalent B(1), and two equivalent B(2) atoms. There are three inequivalent B sites. In the first B site, B(1) is bonded in a 9-coordinate geometry to one Yb(1), one Ni(2), one Ni(3), one Ni(4), one Ni(5), two equivalent Ni(6), and two equivalent Ni(7) atoms. In the second B site, B(2) is bonded in a 9-coordinate geometry to one Yb(1), one Ni(1), one Ni(2), one Ni(3), two equivalent Ni(5), two equivalent Ni(7), and one B(2) atom. In the third B site, B(3) is bonded in a 9-coordinate geometry to two equivalent Yb(1), two equivalent Ni(1), two equivalent Ni(5), two equivalent Ni(6), and one B(3) atom. is represented by the CIF card [CIF]
data_Yb3Ni19B10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.787
_cell_length_b   7.787
_cell_length_c   5.650
_cell_angle_alpha   88.736
_cell_angle_beta   88.736
_cell_angle_gamma   67.239
_symmetry_Int_Tables_number   1
_cell_volume   315.847
_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
  Yb  Yb0  1  0.625  0.625  0.607  1.0
  Yb  Yb1  1  0.375  0.375  0.393  1.0
  Yb  Yb2  1  1.000  0.000  1.000  1.0
  Ni  Ni3  1  0.623  0.623  0.125  1.0
  Ni  Ni4  1  0.377  0.377  0.875  1.0
  Ni  Ni5  1  0.837  0.837  0.703  1.0
  Ni  Ni6  1  0.163  0.163  0.297  1.0
  Ni  Ni7  1  0.818  0.818  0.268  1.0
  Ni  Ni8  1  0.182  0.182  0.732  1.0
  Ni  Ni9  1  1.000  0.000  0.500  1.0
  Ni  Ni10  1  0.622  0.124  0.077  1.0
  Ni  Ni11  1  0.378  0.876  0.923  1.0
  Ni  Ni12  1  0.876  0.378  0.923  1.0
  Ni  Ni13  1  0.124  0.622  0.077  1.0
  Ni  Ni14  1  0.287  0.773  0.299  1.0
  Ni  Ni15  1  0.713  0.227  0.701  1.0
  Ni  Ni16  1  0.227  0.713  0.701  1.0
  Ni  Ni17  1  0.773  0.287  0.299  1.0
  Ni  Ni18  1  0.482  0.954  0.302  1.0
  Ni  Ni19  1  0.518  0.046  0.698  1.0
  Ni  Ni20  1  0.046  0.518  0.698  1.0
  Ni  Ni21  1  0.954  0.482  0.302  1.0
  B  B22  1  0.701  0.064  0.430  1.0
  B  B23  1  0.299  0.936  0.570  1.0
  B  B24  1  0.936  0.299  0.570  1.0
  B  B25  1  0.064  0.701  0.430  1.0
  B  B26  1  0.351  0.140  0.026  1.0
  B  B27  1  0.649  0.860  0.974  1.0
  B  B28  1  0.860  0.649  0.974  1.0
  B  B29  1  0.140  0.351  0.026  1.0
  B  B30  1  0.615  0.385  0.000  1.0
  B  B31  1  0.385  0.615  1.000  1.0
[/CIF]
.