The compound described by Ce2PtNiSi2 is hexagonal omega structure-derived structured and crystallizes in the orthorhombic Imm2 space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to two equivalent Pt(1), four equivalent Ni(1), two equivalent Si(2), and four equivalent Si(1) atoms to form CeSi6Ni4Pt2 cuboctahedra that share edges with four equivalent Ce(1)Si6Ni4Pt2 cuboctahedra, edges with eight equivalent Ce(2)Si6Ni2Pt4 cuboctahedra, faces with four equivalent Ce(2)Si6Ni2Pt4 cuboctahedra, and faces with four equivalent Ce(1)Si6Ni4Pt2 cuboctahedra. In the second Ce site, Ce(2) is bonded to four equivalent Pt(1), two equivalent Ni(1), two equivalent Si(1), and four equivalent Si(2) atoms to form CeSi6Ni2Pt4 cuboctahedra that share edges with four equivalent Ce(2)Si6Ni2Pt4 cuboctahedra, edges with eight equivalent Ce(1)Si6Ni4Pt2 cuboctahedra, faces with four equivalent Ce(2)Si6Ni2Pt4 cuboctahedra, and faces with four equivalent Ce(1)Si6Ni4Pt2 cuboctahedra. Pt(1) is bonded in a 9-coordinate geometry to two equivalent Ce(1), four equivalent Ce(2), one Si(2), and two equivalent Si(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Ce(2), four equivalent Ce(1), one Si(1), and two equivalent Si(2) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Ce(2), four equivalent Ce(1), two equivalent Pt(1), and one Ni(1) atom. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Ce(1), four equivalent Ce(2), one Pt(1), and two equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_Ce2Si2NiPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.753
_cell_length_b   7.753
_cell_length_c   7.753
_cell_angle_alpha   150.249
_cell_angle_beta   148.904
_cell_angle_gamma   43.574
_symmetry_Int_Tables_number   1
_cell_volume   119.113
_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
  Ce  Ce0  1  0.752  0.252  0.500  1.0
  Ce  Ce1  1  0.998  0.998  0.000  1.0
  Si  Si2  1  0.175  0.675  0.500  1.0
  Si  Si3  1  0.413  0.413  0.000  1.0
  Ni  Ni4  1  0.335  0.835  0.500  1.0
  Pt  Pt5  1  0.585  0.585  0.000  1.0
[/CIF]
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The compound described by Ce2PtNiSi2 is hexagonal omega structure-derived structured and crystallizes in the orthorhombic Imm2 space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to two equivalent Pt(1), four equivalent Ni(1), two equivalent Si(2), and four equivalent Si(1) atoms to form CeSi6Ni4Pt2 cuboctahedra that share edges with four equivalent Ce(1)Si6Ni4Pt2 cuboctahedra, edges with eight equivalent Ce(2)Si6Ni2Pt4 cuboctahedra, faces with four equivalent Ce(2)Si6Ni2Pt4 cuboctahedra, and faces with four equivalent Ce(1)Si6Ni4Pt2 cuboctahedra. In the second Ce site, Ce(2) is bonded to four equivalent Pt(1), two equivalent Ni(1), two equivalent Si(1), and four equivalent Si(2) atoms to form CeSi6Ni2Pt4 cuboctahedra that share edges with four equivalent Ce(2)Si6Ni2Pt4 cuboctahedra, edges with eight equivalent Ce(1)Si6Ni4Pt2 cuboctahedra, faces with four equivalent Ce(2)Si6Ni2Pt4 cuboctahedra, and faces with four equivalent Ce(1)Si6Ni4Pt2 cuboctahedra. Pt(1) is bonded in a 9-coordinate geometry to two equivalent Ce(1), four equivalent Ce(2), one Si(2), and two equivalent Si(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Ce(2), four equivalent Ce(1), one Si(1), and two equivalent Si(2) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Ce(2), four equivalent Ce(1), two equivalent Pt(1), and one Ni(1) atom. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Ce(1), four equivalent Ce(2), one Pt(1), and two equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_Ce2Si2NiPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.753
_cell_length_b   7.753
_cell_length_c   7.753
_cell_angle_alpha   150.249
_cell_angle_beta   148.904
_cell_angle_gamma   43.574
_symmetry_Int_Tables_number   1
_cell_volume   119.113
_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
  Ce  Ce0  1  0.752  0.252  0.500  1.0
  Ce  Ce1  1  0.998  0.998  0.000  1.0
  Si  Si2  1  0.175  0.675  0.500  1.0
  Si  Si3  1  0.413  0.413  0.000  1.0
  Ni  Ni4  1  0.335  0.835  0.500  1.0
  Pt  Pt5  1  0.585  0.585  0.000  1.0
[/CIF]
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