The material structure described by Y3(OsSi3)4 crystallizes in the orthorhombic Cmce space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 16-coordinate geometry to four Os(2,2,2); four equivalent Si(1); four equivalent Si(3); and four equivalent Si(4) atoms. In the second Y site, Y(2) is bonded in a 18-coordinate geometry to two Os(2,2); four equivalent Os(1); four equivalent Si(2); four equivalent Si(3); and four equivalent Si(4) atoms. There are seven inequivalent Os sites. In the first Os site, Os(2) is bonded in a 5-coordinate geometry to one Y(2), four equivalent Y(1), one Si(1), two equivalent Si(3), and two equivalent Si(4) atoms. In the second Os site, Os(2) is bonded in a 5-coordinate geometry to one Y(2), four equivalent Y(1), one Si(1), two equivalent Si(3), and two equivalent Si(4) atoms. In the third Os site, Os(2) is bonded in a 5-coordinate geometry to one Y(2), four equivalent Y(1), one Si(1), two equivalent Si(3), and two equivalent Si(4) atoms. In the fourth Os site, Os(1) is bonded in a 7-coordinate geometry to two equivalent Y(2); two equivalent Si(3); two equivalent Si(4); and three Si(2,2) atoms. In the fifth Os site, Os(1) is bonded in a 7-coordinate geometry to two equivalent Y(2); two equivalent Si(3); two equivalent Si(4); and three Si(2,2) atoms. In the sixth Os site, Os(2) is bonded in a 5-coordinate geometry to one Y(2), four equivalent Y(1), one Si(1), two equivalent Si(3), and two equivalent Si(4) atoms. In the seventh Os site, Os(1) is bonded in a 7-coordinate geometry to two equivalent Y(2), two equivalent Si(3), two equivalent Si(4), and three equivalent Si(2) atoms. There are five inequivalent Si sites. In the first Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Y(2); three Os(1,1,1); two equivalent Si(3); and two equivalent Si(4) atoms. In the second Si site, Si(1) is bonded in a 9-coordinate geometry to four equivalent Y(1), one Os(2), two equivalent Si(3), and two equivalent Si(4) atoms. In the third Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Y(2), three equivalent Os(1), two equivalent Si(3), and two equivalent Si(4) atoms. In the fourth Si site, Si(3) is bonded in a 9-coordinate geometry to one Y(2), two equivalent Y(1), one Os(1), one Os(2), one Si(1), one Si(2), and two equivalent Si(4) atoms. In the fifth Si site, Si(4) is bonded in a 9-coordinate geometry to one Y(2), two equivalent Y(1), one Os(1), one Os(2), one Si(1), one Si(2), and two equivalent Si(3) atoms. is represented by the CIF file [CIF]
data_Y3(Si3Os)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.101
_cell_length_b   10.101
_cell_length_c   8.140
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   132.505
_symmetry_Int_Tables_number   1
_cell_volume   612.237
_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
  Y  Y0  1  0.502  0.002  0.750  1.0
  Y  Y1  1  0.998  0.498  0.250  1.0
  Y  Y2  1  0.498  0.998  0.250  1.0
  Y  Y3  1  0.002  0.502  0.750  1.0
  Y  Y4  1  0.000  0.000  0.000  1.0
  Y  Y5  1  0.500  0.500  0.500  1.0
  Si  Si6  1  0.795  0.205  0.500  1.0
  Si  Si7  1  0.705  0.295  0.000  1.0
  Si  Si8  1  0.205  0.795  0.500  1.0
  Si  Si9  1  0.295  0.705  0.000  1.0
  Si  Si10  1  0.666  0.666  0.166  1.0
  Si  Si11  1  0.166  0.166  0.334  1.0
  Si  Si12  1  0.834  0.834  0.666  1.0
  Si  Si13  1  0.334  0.334  0.834  1.0
  Si  Si14  1  0.844  0.609  0.996  1.0
  Si  Si15  1  0.109  0.344  0.504  1.0
  Si  Si16  1  0.656  0.891  0.496  1.0
  Si  Si17  1  0.391  0.156  0.004  1.0
  Si  Si18  1  0.156  0.391  0.004  1.0
  Si  Si19  1  0.891  0.656  0.496  1.0
  Si  Si20  1  0.120  0.886  0.727  1.0
  Si  Si21  1  0.386  0.620  0.773  1.0
  Si  Si22  1  0.380  0.614  0.227  1.0
  Si  Si23  1  0.114  0.880  0.273  1.0
  Si  Si24  1  0.880  0.114  0.273  1.0
  Si  Si25  1  0.614  0.380  0.227  1.0
  Si  Si26  1  0.620  0.386  0.773  1.0
  Si  Si27  1  0.886  0.120  0.727  1.0
  Si  Si28  1  0.609  0.844  0.996  1.0
  Si  Si29  1  0.344  0.109  0.504  1.0
  Os  Os30  1  0.628  0.628  0.872  1.0
  Os  Os31  1  0.128  0.128  0.628  1.0
  Os  Os32  1  0.372  0.372  0.128  1.0
  Os  Os33  1  0.872  0.872  0.372  1.0
  Os  Os34  1  0.169  0.831  0.000  1.0
  Os  Os35  1  0.331  0.669  0.500  1.0
  Os  Os36  1  0.831  0.169  0.000  1.0
  Os  Os37  1  0.669  0.331  0.500  1.0
[/CIF]
.
The material structure described by Y3(OsSi3)4 crystallizes in the orthorhombic Cmce space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 16-coordinate geometry to four Os(2,2,2); four equivalent Si(1); four equivalent Si(3); and four equivalent Si(4) atoms. In the second Y site, Y(2) is bonded in a 18-coordinate geometry to two Os(2,2); four equivalent Os(1); four equivalent Si(2); four equivalent Si(3); and four equivalent Si(4) atoms. There are seven inequivalent Os sites. In the first Os site, Os(2) is bonded in a 5-coordinate geometry to one Y(2), four equivalent Y(1), one Si(1), two equivalent Si(3), and two equivalent Si(4) atoms. In the second Os site, Os(2) is bonded in a 5-coordinate geometry to one Y(2), four equivalent Y(1), one Si(1), two equivalent Si(3), and two equivalent Si(4) atoms. In the third Os site, Os(2) is bonded in a 5-coordinate geometry to one Y(2), four equivalent Y(1), one Si(1), two equivalent Si(3), and two equivalent Si(4) atoms. In the fourth Os site, Os(1) is bonded in a 7-coordinate geometry to two equivalent Y(2); two equivalent Si(3); two equivalent Si(4); and three Si(2,2) atoms. In the fifth Os site, Os(1) is bonded in a 7-coordinate geometry to two equivalent Y(2); two equivalent Si(3); two equivalent Si(4); and three Si(2,2) atoms. In the sixth Os site, Os(2) is bonded in a 5-coordinate geometry to one Y(2), four equivalent Y(1), one Si(1), two equivalent Si(3), and two equivalent Si(4) atoms. In the seventh Os site, Os(1) is bonded in a 7-coordinate geometry to two equivalent Y(2), two equivalent Si(3), two equivalent Si(4), and three equivalent Si(2) atoms. There are five inequivalent Si sites. In the first Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Y(2); three Os(1,1,1); two equivalent Si(3); and two equivalent Si(4) atoms. In the second Si site, Si(1) is bonded in a 9-coordinate geometry to four equivalent Y(1), one Os(2), two equivalent Si(3), and two equivalent Si(4) atoms. In the third Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Y(2), three equivalent Os(1), two equivalent Si(3), and two equivalent Si(4) atoms. In the fourth Si site, Si(3) is bonded in a 9-coordinate geometry to one Y(2), two equivalent Y(1), one Os(1), one Os(2), one Si(1), one Si(2), and two equivalent Si(4) atoms. In the fifth Si site, Si(4) is bonded in a 9-coordinate geometry to one Y(2), two equivalent Y(1), one Os(1), one Os(2), one Si(1), one Si(2), and two equivalent Si(3) atoms. is represented by the CIF file [CIF]
data_Y3(Si3Os)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.101
_cell_length_b   10.101
_cell_length_c   8.140
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   132.505
_symmetry_Int_Tables_number   1
_cell_volume   612.237
_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
  Y  Y0  1  0.502  0.002  0.750  1.0
  Y  Y1  1  0.998  0.498  0.250  1.0
  Y  Y2  1  0.498  0.998  0.250  1.0
  Y  Y3  1  0.002  0.502  0.750  1.0
  Y  Y4  1  0.000  0.000  0.000  1.0
  Y  Y5  1  0.500  0.500  0.500  1.0
  Si  Si6  1  0.795  0.205  0.500  1.0
  Si  Si7  1  0.705  0.295  0.000  1.0
  Si  Si8  1  0.205  0.795  0.500  1.0
  Si  Si9  1  0.295  0.705  0.000  1.0
  Si  Si10  1  0.666  0.666  0.166  1.0
  Si  Si11  1  0.166  0.166  0.334  1.0
  Si  Si12  1  0.834  0.834  0.666  1.0
  Si  Si13  1  0.334  0.334  0.834  1.0
  Si  Si14  1  0.844  0.609  0.996  1.0
  Si  Si15  1  0.109  0.344  0.504  1.0
  Si  Si16  1  0.656  0.891  0.496  1.0
  Si  Si17  1  0.391  0.156  0.004  1.0
  Si  Si18  1  0.156  0.391  0.004  1.0
  Si  Si19  1  0.891  0.656  0.496  1.0
  Si  Si20  1  0.120  0.886  0.727  1.0
  Si  Si21  1  0.386  0.620  0.773  1.0
  Si  Si22  1  0.380  0.614  0.227  1.0
  Si  Si23  1  0.114  0.880  0.273  1.0
  Si  Si24  1  0.880  0.114  0.273  1.0
  Si  Si25  1  0.614  0.380  0.227  1.0
  Si  Si26  1  0.620  0.386  0.773  1.0
  Si  Si27  1  0.886  0.120  0.727  1.0
  Si  Si28  1  0.609  0.844  0.996  1.0
  Si  Si29  1  0.344  0.109  0.504  1.0
  Os  Os30  1  0.628  0.628  0.872  1.0
  Os  Os31  1  0.128  0.128  0.628  1.0
  Os  Os32  1  0.372  0.372  0.128  1.0
  Os  Os33  1  0.872  0.872  0.372  1.0
  Os  Os34  1  0.169  0.831  0.000  1.0
  Os  Os35  1  0.331  0.669  0.500  1.0
  Os  Os36  1  0.831  0.169  0.000  1.0
  Os  Os37  1  0.669  0.331  0.500  1.0
[/CIF]
.