The material described by Mo8Pt5Si4 is beta Plutonium-derived structured and crystallizes in the monoclinic Cc space group. There are eight inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 13-coordinate geometry to one Mo(2), one Mo(3), one Mo(4), one Mo(5), one Mo(6), one Mo(8), two equivalent Mo(7), one Pt(1), one Pt(4), one Pt(5), one Si(1), and one Si(4) atom. In the second Mo site, Mo(2) is bonded in a 6-coordinate geometry to one Mo(1), one Mo(3), one Mo(7), one Mo(8), one Pt(2), one Pt(3), two equivalent Pt(5), one Si(1), one Si(2), and one Si(3) atom. In the third Mo site, Mo(3) is bonded in a 13-coordinate geometry to one Mo(1), one Mo(2), one Mo(5), one Mo(6), one Mo(8), one Pt(2), one Pt(5), two equivalent Pt(3), one Si(1), one Si(3), and two equivalent Si(4) atoms. In the fourth Mo site, Mo(4) is bonded in a 11-coordinate geometry to one Mo(1), one Mo(5), one Mo(6), one Mo(8), one Pt(2), one Pt(3), one Pt(5), two equivalent Pt(4), one Si(1), one Si(3), and two equivalent Si(2) atoms. In the fifth Mo site, Mo(5) is bonded in a 15-coordinate geometry to one Mo(1), one Mo(3), one Mo(4), one Mo(7), two equivalent Mo(8), one Pt(1), one Pt(2), one Pt(3), two equivalent Pt(4), one Si(2), one Si(3), and two equivalent Si(4) atoms. In the sixth Mo site, Mo(6) is bonded in a 13-coordinate geometry to one Mo(1), one Mo(3), one Mo(4), one Mo(7), one Mo(8), one Pt(2), one Pt(3), two equivalent Pt(1), one Si(2), one Si(3), and two equivalent Si(1) atoms. In the seventh Mo site, Mo(7) is bonded in a 13-coordinate geometry to one Mo(2), one Mo(5), one Mo(6), one Mo(8), two equivalent Mo(1), one Pt(2), one Pt(4), one Pt(5), two equivalent Pt(1), one Si(1), one Si(3), and one Si(4) atom. In the eighth Mo site, Mo(8) is bonded in a 13-coordinate geometry to one Mo(1), one Mo(2), one Mo(3), one Mo(4), one Mo(6), one Mo(7), two equivalent Mo(5), one Pt(1), one Pt(3), one Pt(4), one Si(2), and one Si(4) atom. There are five inequivalent Pt sites. In the first Pt site, Pt(5) is bonded in a 10-coordinate geometry to one Mo(1), one Mo(3), one Mo(4), one Mo(7), two equivalent Mo(2), one Pt(2), one Si(2), one Si(3), and one Si(4) atom. In the second Pt site, Pt(1) is bonded in a 10-coordinate geometry to one Mo(1), one Mo(5), one Mo(8), two equivalent Mo(6), two equivalent Mo(7), one Si(1), one Si(2), and one Si(3) atom. In the third Pt site, Pt(2) is bonded in a 2-coordinate geometry to one Mo(2), one Mo(3), one Mo(4), one Mo(5), one Mo(6), one Mo(7), one Pt(5), one Si(2), and one Si(4) atom. In the fourth Pt site, Pt(3) is bonded in a 2-coordinate geometry to one Mo(2), one Mo(4), one Mo(5), one Mo(6), one Mo(8), two equivalent Mo(3), one Si(1), and one Si(4) atom. In the fifth Pt site, Pt(4) is bonded in a 4-coordinate geometry to one Mo(1), one Mo(7), one Mo(8), two equivalent Mo(4), two equivalent Mo(5), one Si(1), one Si(2), one Si(3), and one Si(4) atom. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a 11-coordinate geometry to one Mo(1), one Mo(2), one Mo(3), one Mo(4), one Mo(7), two equivalent Mo(6), one Pt(1), one Pt(3), one Pt(4), and one Si(3) atom. In the second Si site, Si(2) is bonded in a 11-coordinate geometry to one Mo(2), one Mo(5), one Mo(6), one Mo(8), two equivalent Mo(4), one Pt(1), one Pt(2), one Pt(4), one Pt(5), and one Si(3) atom. In the third Si site, Si(3) is bonded in a 11-coordinate geometry to one Mo(2), one Mo(3), one Mo(4), one Mo(5), one Mo(6), one Mo(7), one Pt(1), one Pt(4), one Pt(5), one Si(1), and one Si(2) atom. In the fourth Si site, Si(4) is bonded in a 11-coordinate geometry to one Mo(1), one Mo(7), one Mo(8), two equivalent Mo(3), two equivalent Mo(5), one Pt(2), one Pt(3), one Pt(4), and one Pt(5) atom. is represented by the CIF card [CIF]
data_Si4Mo8Pt5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.000
_cell_length_b   8.000
_cell_length_c   9.672
_cell_angle_alpha   80.190
_cell_angle_beta   80.190
_cell_angle_gamma   60.483
_symmetry_Int_Tables_number   1
_cell_volume   528.049
_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
  Si  Si0  1  0.291  0.025  0.808  1.0
  Si  Si1  1  0.025  0.291  0.308  1.0
  Si  Si2  1  0.808  0.500  0.823  1.0
  Si  Si3  1  0.500  0.808  0.323  1.0
  Si  Si4  1  0.924  0.393  0.559  1.0
  Si  Si5  1  0.393  0.924  0.059  1.0
  Si  Si6  1  0.819  0.023  0.807  1.0
  Si  Si7  1  0.023  0.819  0.307  1.0
  Mo  Mo8  1  0.535  0.129  0.633  1.0
  Mo  Mo9  1  0.129  0.535  0.133  1.0
  Mo  Mo10  1  0.415  0.593  0.915  1.0
  Mo  Mo11  1  0.593  0.415  0.415  1.0
  Mo  Mo12  1  0.079  0.902  0.016  1.0
  Mo  Mo13  1  0.902  0.079  0.516  1.0
  Mo  Mo14  1  0.555  0.758  0.608  1.0
  Mo  Mo15  1  0.758  0.555  0.108  1.0
  Mo  Mo16  1  0.907  0.752  0.606  1.0
  Mo  Mo17  1  0.752  0.907  0.106  1.0
  Mo  Mo18  1  0.268  0.087  0.507  1.0
  Mo  Mo19  1  0.087  0.268  0.007  1.0
  Mo  Mo20  1  0.417  0.280  0.914  1.0
  Mo  Mo21  1  0.280  0.417  0.414  1.0
  Mo  Mo22  1  0.631  0.031  0.395  1.0
  Mo  Mo23  1  0.031  0.631  0.895  1.0
  Pt  Pt24  1  0.365  0.153  0.209  1.0
  Pt  Pt25  1  0.153  0.365  0.709  1.0
  Pt  Pt26  1  0.747  0.257  0.974  1.0
  Pt  Pt27  1  0.257  0.747  0.474  1.0
  Pt  Pt28  1  0.164  0.856  0.725  1.0
  Pt  Pt29  1  0.856  0.164  0.225  1.0
  Pt  Pt30  1  0.636  0.839  0.861  1.0
  Pt  Pt31  1  0.839  0.636  0.361  1.0
  Pt  Pt32  1  0.649  0.376  0.694  1.0
  Pt  Pt33  1  0.376  0.649  0.194  1.0
[/CIF]
.
The material described by Mo8Pt5Si4 is beta Plutonium-derived structured and crystallizes in the monoclinic Cc space group. There are eight inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 13-coordinate geometry to one Mo(2), one Mo(3), one Mo(4), one Mo(5), one Mo(6), one Mo(8), two equivalent Mo(7), one Pt(1), one Pt(4), one Pt(5), one Si(1), and one Si(4) atom. In the second Mo site, Mo(2) is bonded in a 6-coordinate geometry to one Mo(1), one Mo(3), one Mo(7), one Mo(8), one Pt(2), one Pt(3), two equivalent Pt(5), one Si(1), one Si(2), and one Si(3) atom. In the third Mo site, Mo(3) is bonded in a 13-coordinate geometry to one Mo(1), one Mo(2), one Mo(5), one Mo(6), one Mo(8), one Pt(2), one Pt(5), two equivalent Pt(3), one Si(1), one Si(3), and two equivalent Si(4) atoms. In the fourth Mo site, Mo(4) is bonded in a 11-coordinate geometry to one Mo(1), one Mo(5), one Mo(6), one Mo(8), one Pt(2), one Pt(3), one Pt(5), two equivalent Pt(4), one Si(1), one Si(3), and two equivalent Si(2) atoms. In the fifth Mo site, Mo(5) is bonded in a 15-coordinate geometry to one Mo(1), one Mo(3), one Mo(4), one Mo(7), two equivalent Mo(8), one Pt(1), one Pt(2), one Pt(3), two equivalent Pt(4), one Si(2), one Si(3), and two equivalent Si(4) atoms. In the sixth Mo site, Mo(6) is bonded in a 13-coordinate geometry to one Mo(1), one Mo(3), one Mo(4), one Mo(7), one Mo(8), one Pt(2), one Pt(3), two equivalent Pt(1), one Si(2), one Si(3), and two equivalent Si(1) atoms. In the seventh Mo site, Mo(7) is bonded in a 13-coordinate geometry to one Mo(2), one Mo(5), one Mo(6), one Mo(8), two equivalent Mo(1), one Pt(2), one Pt(4), one Pt(5), two equivalent Pt(1), one Si(1), one Si(3), and one Si(4) atom. In the eighth Mo site, Mo(8) is bonded in a 13-coordinate geometry to one Mo(1), one Mo(2), one Mo(3), one Mo(4), one Mo(6), one Mo(7), two equivalent Mo(5), one Pt(1), one Pt(3), one Pt(4), one Si(2), and one Si(4) atom. There are five inequivalent Pt sites. In the first Pt site, Pt(5) is bonded in a 10-coordinate geometry to one Mo(1), one Mo(3), one Mo(4), one Mo(7), two equivalent Mo(2), one Pt(2), one Si(2), one Si(3), and one Si(4) atom. In the second Pt site, Pt(1) is bonded in a 10-coordinate geometry to one Mo(1), one Mo(5), one Mo(8), two equivalent Mo(6), two equivalent Mo(7), one Si(1), one Si(2), and one Si(3) atom. In the third Pt site, Pt(2) is bonded in a 2-coordinate geometry to one Mo(2), one Mo(3), one Mo(4), one Mo(5), one Mo(6), one Mo(7), one Pt(5), one Si(2), and one Si(4) atom. In the fourth Pt site, Pt(3) is bonded in a 2-coordinate geometry to one Mo(2), one Mo(4), one Mo(5), one Mo(6), one Mo(8), two equivalent Mo(3), one Si(1), and one Si(4) atom. In the fifth Pt site, Pt(4) is bonded in a 4-coordinate geometry to one Mo(1), one Mo(7), one Mo(8), two equivalent Mo(4), two equivalent Mo(5), one Si(1), one Si(2), one Si(3), and one Si(4) atom. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a 11-coordinate geometry to one Mo(1), one Mo(2), one Mo(3), one Mo(4), one Mo(7), two equivalent Mo(6), one Pt(1), one Pt(3), one Pt(4), and one Si(3) atom. In the second Si site, Si(2) is bonded in a 11-coordinate geometry to one Mo(2), one Mo(5), one Mo(6), one Mo(8), two equivalent Mo(4), one Pt(1), one Pt(2), one Pt(4), one Pt(5), and one Si(3) atom. In the third Si site, Si(3) is bonded in a 11-coordinate geometry to one Mo(2), one Mo(3), one Mo(4), one Mo(5), one Mo(6), one Mo(7), one Pt(1), one Pt(4), one Pt(5), one Si(1), and one Si(2) atom. In the fourth Si site, Si(4) is bonded in a 11-coordinate geometry to one Mo(1), one Mo(7), one Mo(8), two equivalent Mo(3), two equivalent Mo(5), one Pt(2), one Pt(3), one Pt(4), and one Pt(5) atom. is represented by the CIF card [CIF]
data_Si4Mo8Pt5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.000
_cell_length_b   8.000
_cell_length_c   9.672
_cell_angle_alpha   80.190
_cell_angle_beta   80.190
_cell_angle_gamma   60.483
_symmetry_Int_Tables_number   1
_cell_volume   528.049
_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
  Si  Si0  1  0.291  0.025  0.808  1.0
  Si  Si1  1  0.025  0.291  0.308  1.0
  Si  Si2  1  0.808  0.500  0.823  1.0
  Si  Si3  1  0.500  0.808  0.323  1.0
  Si  Si4  1  0.924  0.393  0.559  1.0
  Si  Si5  1  0.393  0.924  0.059  1.0
  Si  Si6  1  0.819  0.023  0.807  1.0
  Si  Si7  1  0.023  0.819  0.307  1.0
  Mo  Mo8  1  0.535  0.129  0.633  1.0
  Mo  Mo9  1  0.129  0.535  0.133  1.0
  Mo  Mo10  1  0.415  0.593  0.915  1.0
  Mo  Mo11  1  0.593  0.415  0.415  1.0
  Mo  Mo12  1  0.079  0.902  0.016  1.0
  Mo  Mo13  1  0.902  0.079  0.516  1.0
  Mo  Mo14  1  0.555  0.758  0.608  1.0
  Mo  Mo15  1  0.758  0.555  0.108  1.0
  Mo  Mo16  1  0.907  0.752  0.606  1.0
  Mo  Mo17  1  0.752  0.907  0.106  1.0
  Mo  Mo18  1  0.268  0.087  0.507  1.0
  Mo  Mo19  1  0.087  0.268  0.007  1.0
  Mo  Mo20  1  0.417  0.280  0.914  1.0
  Mo  Mo21  1  0.280  0.417  0.414  1.0
  Mo  Mo22  1  0.631  0.031  0.395  1.0
  Mo  Mo23  1  0.031  0.631  0.895  1.0
  Pt  Pt24  1  0.365  0.153  0.209  1.0
  Pt  Pt25  1  0.153  0.365  0.709  1.0
  Pt  Pt26  1  0.747  0.257  0.974  1.0
  Pt  Pt27  1  0.257  0.747  0.474  1.0
  Pt  Pt28  1  0.164  0.856  0.725  1.0
  Pt  Pt29  1  0.856  0.164  0.225  1.0
  Pt  Pt30  1  0.636  0.839  0.861  1.0
  Pt  Pt31  1  0.839  0.636  0.361  1.0
  Pt  Pt32  1  0.649  0.376  0.694  1.0
  Pt  Pt33  1  0.376  0.649  0.194  1.0
[/CIF]
.