The crystal structure described by U4Pt11Ga20 crystallizes in the monoclinic C2/m space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 14-coordinate geometry to two equivalent Pt(4), two equivalent Pt(6), one Ga(1), one Ga(2), one Ga(5), two equivalent Ga(10), two equivalent Ga(9), and three equivalent Ga(6) atoms. In the second U site, U(2) is bonded in a 14-coordinate geometry to two equivalent Pt(3), two equivalent Pt(5), one Ga(10), one Ga(2), one Ga(8), two equivalent Ga(5), two equivalent Ga(7), and three equivalent Ga(4) atoms. There are six inequivalent Pt sites. In the first Pt site, Pt(1) is bonded to two equivalent Ga(7), two equivalent Ga(9), and four equivalent Ga(3) atoms to form distorted edge-sharing PtGa8 cuboctahedra. In the second Pt site, Pt(2) is bonded in a 7-coordinate geometry to one Ga(2), two equivalent Ga(3), two equivalent Ga(7), and two equivalent Ga(9) atoms. In the third Pt site, Pt(3) is bonded in a 10-coordinate geometry to two equivalent U(2), one Ga(4), one Ga(5), two equivalent Ga(1), two equivalent Ga(10), and two equivalent Ga(8) atoms. In the fourth Pt site, Pt(4) is bonded in a 7-coordinate geometry to two equivalent U(1), one Ga(10), one Ga(3), two equivalent Ga(5), and three equivalent Ga(6) atoms. In the fifth Pt site, Pt(5) is bonded in a 9-coordinate geometry to two equivalent U(2), one Ga(7), one Ga(8), two equivalent Ga(2), and three equivalent Ga(4) atoms. In the sixth Pt site, Pt(6) is bonded in a 9-coordinate geometry to two equivalent U(1), one Ga(10), one Ga(8), one Ga(9), two equivalent Ga(1), and two equivalent Ga(2) atoms. There are ten inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 3-coordinate geometry to one U(1), two equivalent Pt(3), and two equivalent Pt(6) atoms. In the second Ga site, Ga(2) is bonded in a 5-coordinate geometry to one U(1), one U(2), one Pt(2), two equivalent Pt(5), and two equivalent Pt(6) atoms. In the third Ga site, Ga(3) is bonded in a 5-coordinate geometry to one Pt(4), two equivalent Pt(1), and two equivalent Pt(2) atoms. In the fourth Ga site, Ga(4) is bonded in a 4-coordinate geometry to three equivalent U(2), one Pt(3), and three equivalent Pt(5) atoms. In the fifth Ga site, Ga(5) is bonded in a 10-coordinate geometry to one U(1), two equivalent U(2), one Pt(3), two equivalent Pt(4), one Ga(6), one Ga(7), and two equivalent Ga(10) atoms. In the sixth Ga site, Ga(6) is bonded in a 10-coordinate geometry to three equivalent U(1), three equivalent Pt(4), one Ga(5), one Ga(9), and two equivalent Ga(6) atoms. In the seventh Ga site, Ga(7) is bonded in a 6-coordinate geometry to two equivalent U(2), one Pt(1), one Pt(5), two equivalent Pt(2), and one Ga(5) atom. In the eighth Ga site, Ga(8) is bonded in a 4-coordinate geometry to one U(2), one Pt(5), one Pt(6), and two equivalent Pt(3) atoms. In the ninth Ga site, Ga(9) is bonded in a 6-coordinate geometry to two equivalent U(1), one Pt(1), one Pt(6), two equivalent Pt(2), and one Ga(6) atom. In the tenth Ga site, Ga(10) is bonded in a 4-coordinate geometry to one U(2), two equivalent U(1), one Pt(4), one Pt(6), two equivalent Pt(3), and two equivalent Ga(5) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_U4Ga20Pt11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.186
_cell_length_b   10.966
_cell_length_c   13.800
_cell_angle_alpha   83.008
_cell_angle_beta   81.277
_cell_angle_gamma   78.997
_symmetry_Int_Tables_number   1
_cell_volume   611.823
_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
  U  U0  1  0.121  0.091  0.666  1.0
  U  U1  1  0.879  0.909  0.334  1.0
  U  U2  1  0.775  0.631  0.820  1.0
  U  U3  1  0.225  0.369  0.180  1.0
  Ga  Ga4  1  0.007  0.072  0.914  1.0
  Ga  Ga5  1  0.993  0.928  0.086  1.0
  Ga  Ga6  1  0.065  0.671  0.199  1.0
  Ga  Ga7  1  0.935  0.329  0.801  1.0
  Ga  Ga8  1  0.102  0.342  0.454  1.0
  Ga  Ga9  1  0.898  0.658  0.546  1.0
  Ga  Ga10  1  0.201  0.607  0.992  1.0
  Ga  Ga11  1  0.799  0.393  0.008  1.0
  Ga  Ga12  1  0.256  0.783  0.705  1.0
  Ga  Ga13  1  0.744  0.217  0.295  1.0
  Ga  Ga14  1  0.301  0.901  0.497  1.0
  Ga  Ga15  1  0.699  0.099  0.503  1.0
  Ga  Ga16  1  0.388  0.527  0.698  1.0
  Ga  Ga17  1  0.612  0.473  0.302  1.0
  Ga  Ga18  1  0.398  0.207  0.998  1.0
  Ga  Ga19  1  0.602  0.793  0.002  1.0
  Ga  Ga20  1  0.544  0.286  0.626  1.0
  Ga  Ga21  1  0.456  0.714  0.374  1.0
  Ga  Ga22  1  0.634  0.934  0.797  1.0
  Ga  Ga23  1  0.366  0.066  0.203  1.0
  Pt  Pt24  1  0.500  0.500  0.500  1.0
  Pt  Pt25  1  0.028  0.574  0.371  1.0
  Pt  Pt26  1  0.972  0.426  0.629  1.0
  Pt  Pt27  1  0.136  0.835  0.893  1.0
  Pt  Pt28  1  0.864  0.165  0.107  1.0
  Pt  Pt29  1  0.241  0.128  0.389  1.0
  Pt  Pt30  1  0.759  0.872  0.611  1.0
  Pt  Pt31  1  0.345  0.420  0.890  1.0
  Pt  Pt32  1  0.655  0.580  0.110  1.0
  Pt  Pt33  1  0.506  0.173  0.815  1.0
  Pt  Pt34  1  0.494  0.827  0.185  1.0
[/CIF]
.
The crystal structure described by U4Pt11Ga20 crystallizes in the monoclinic C2/m space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 14-coordinate geometry to two equivalent Pt(4), two equivalent Pt(6), one Ga(1), one Ga(2), one Ga(5), two equivalent Ga(10), two equivalent Ga(9), and three equivalent Ga(6) atoms. In the second U site, U(2) is bonded in a 14-coordinate geometry to two equivalent Pt(3), two equivalent Pt(5), one Ga(10), one Ga(2), one Ga(8), two equivalent Ga(5), two equivalent Ga(7), and three equivalent Ga(4) atoms. There are six inequivalent Pt sites. In the first Pt site, Pt(1) is bonded to two equivalent Ga(7), two equivalent Ga(9), and four equivalent Ga(3) atoms to form distorted edge-sharing PtGa8 cuboctahedra. In the second Pt site, Pt(2) is bonded in a 7-coordinate geometry to one Ga(2), two equivalent Ga(3), two equivalent Ga(7), and two equivalent Ga(9) atoms. In the third Pt site, Pt(3) is bonded in a 10-coordinate geometry to two equivalent U(2), one Ga(4), one Ga(5), two equivalent Ga(1), two equivalent Ga(10), and two equivalent Ga(8) atoms. In the fourth Pt site, Pt(4) is bonded in a 7-coordinate geometry to two equivalent U(1), one Ga(10), one Ga(3), two equivalent Ga(5), and three equivalent Ga(6) atoms. In the fifth Pt site, Pt(5) is bonded in a 9-coordinate geometry to two equivalent U(2), one Ga(7), one Ga(8), two equivalent Ga(2), and three equivalent Ga(4) atoms. In the sixth Pt site, Pt(6) is bonded in a 9-coordinate geometry to two equivalent U(1), one Ga(10), one Ga(8), one Ga(9), two equivalent Ga(1), and two equivalent Ga(2) atoms. There are ten inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 3-coordinate geometry to one U(1), two equivalent Pt(3), and two equivalent Pt(6) atoms. In the second Ga site, Ga(2) is bonded in a 5-coordinate geometry to one U(1), one U(2), one Pt(2), two equivalent Pt(5), and two equivalent Pt(6) atoms. In the third Ga site, Ga(3) is bonded in a 5-coordinate geometry to one Pt(4), two equivalent Pt(1), and two equivalent Pt(2) atoms. In the fourth Ga site, Ga(4) is bonded in a 4-coordinate geometry to three equivalent U(2), one Pt(3), and three equivalent Pt(5) atoms. In the fifth Ga site, Ga(5) is bonded in a 10-coordinate geometry to one U(1), two equivalent U(2), one Pt(3), two equivalent Pt(4), one Ga(6), one Ga(7), and two equivalent Ga(10) atoms. In the sixth Ga site, Ga(6) is bonded in a 10-coordinate geometry to three equivalent U(1), three equivalent Pt(4), one Ga(5), one Ga(9), and two equivalent Ga(6) atoms. In the seventh Ga site, Ga(7) is bonded in a 6-coordinate geometry to two equivalent U(2), one Pt(1), one Pt(5), two equivalent Pt(2), and one Ga(5) atom. In the eighth Ga site, Ga(8) is bonded in a 4-coordinate geometry to one U(2), one Pt(5), one Pt(6), and two equivalent Pt(3) atoms. In the ninth Ga site, Ga(9) is bonded in a 6-coordinate geometry to two equivalent U(1), one Pt(1), one Pt(6), two equivalent Pt(2), and one Ga(6) atom. In the tenth Ga site, Ga(10) is bonded in a 4-coordinate geometry to one U(2), two equivalent U(1), one Pt(4), one Pt(6), two equivalent Pt(3), and two equivalent Ga(5) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_U4Ga20Pt11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.186
_cell_length_b   10.966
_cell_length_c   13.800
_cell_angle_alpha   83.008
_cell_angle_beta   81.277
_cell_angle_gamma   78.997
_symmetry_Int_Tables_number   1
_cell_volume   611.823
_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
  U  U0  1  0.121  0.091  0.666  1.0
  U  U1  1  0.879  0.909  0.334  1.0
  U  U2  1  0.775  0.631  0.820  1.0
  U  U3  1  0.225  0.369  0.180  1.0
  Ga  Ga4  1  0.007  0.072  0.914  1.0
  Ga  Ga5  1  0.993  0.928  0.086  1.0
  Ga  Ga6  1  0.065  0.671  0.199  1.0
  Ga  Ga7  1  0.935  0.329  0.801  1.0
  Ga  Ga8  1  0.102  0.342  0.454  1.0
  Ga  Ga9  1  0.898  0.658  0.546  1.0
  Ga  Ga10  1  0.201  0.607  0.992  1.0
  Ga  Ga11  1  0.799  0.393  0.008  1.0
  Ga  Ga12  1  0.256  0.783  0.705  1.0
  Ga  Ga13  1  0.744  0.217  0.295  1.0
  Ga  Ga14  1  0.301  0.901  0.497  1.0
  Ga  Ga15  1  0.699  0.099  0.503  1.0
  Ga  Ga16  1  0.388  0.527  0.698  1.0
  Ga  Ga17  1  0.612  0.473  0.302  1.0
  Ga  Ga18  1  0.398  0.207  0.998  1.0
  Ga  Ga19  1  0.602  0.793  0.002  1.0
  Ga  Ga20  1  0.544  0.286  0.626  1.0
  Ga  Ga21  1  0.456  0.714  0.374  1.0
  Ga  Ga22  1  0.634  0.934  0.797  1.0
  Ga  Ga23  1  0.366  0.066  0.203  1.0
  Pt  Pt24  1  0.500  0.500  0.500  1.0
  Pt  Pt25  1  0.028  0.574  0.371  1.0
  Pt  Pt26  1  0.972  0.426  0.629  1.0
  Pt  Pt27  1  0.136  0.835  0.893  1.0
  Pt  Pt28  1  0.864  0.165  0.107  1.0
  Pt  Pt29  1  0.241  0.128  0.389  1.0
  Pt  Pt30  1  0.759  0.872  0.611  1.0
  Pt  Pt31  1  0.345  0.420  0.890  1.0
  Pt  Pt32  1  0.655  0.580  0.110  1.0
  Pt  Pt33  1  0.506  0.173  0.815  1.0
  Pt  Pt34  1  0.494  0.827  0.185  1.0
[/CIF]
.