The crystal structure described by Ca2Pt3Si5 crystallizes in the monoclinic C2/c space group. Ca(1) is bonded in a 17-coordinate geometry to two equivalent Pt(1); five equivalent Pt(2); two equivalent Si(3); four equivalent Si(1); and four Si(2,2) atoms. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 6-coordinate geometry to four equivalent Ca(1); two Si(2,2); and four equivalent Si(1) atoms. In the second Pt site, Pt(2) is bonded in a 5-coordinate geometry to five equivalent Ca(1); one Si(1); two Si(2,2); and two equivalent Si(3) atoms. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to four equivalent Ca(1); one Pt(2); two equivalent Pt(1); and two Si(2,2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Ca(1), one Pt(1), two equivalent Pt(2), and two equivalent Si(1) atoms. In the third Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Ca(1), one Pt(1), two equivalent Pt(2), and two equivalent Si(1) atoms. In the fourth Si site, Si(3) is bonded in a 8-coordinate geometry to four equivalent Ca(1) and four equivalent Pt(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ca2Si5Pt3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.210
_cell_length_b   8.213
_cell_length_c   8.209
_cell_angle_alpha   137.584
_cell_angle_beta   104.513
_cell_angle_gamma   90.691
_symmetry_Int_Tables_number   1
_cell_volume   344.562
_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
  Ca  Ca0  1  0.638  0.371  0.266  1.0
  Ca  Ca1  1  0.362  0.629  0.734  1.0
  Ca  Ca2  1  0.104  0.871  0.233  1.0
  Ca  Ca3  1  0.896  0.129  0.767  1.0
  Si  Si4  1  0.462  0.112  0.350  1.0
  Si  Si5  1  0.538  0.888  0.650  1.0
  Si  Si6  1  0.761  0.612  0.150  1.0
  Si  Si7  1  0.239  0.388  0.850  1.0
  Si  Si8  1  0.270  0.520  0.250  1.0
  Si  Si9  1  0.730  0.480  0.750  1.0
  Si  Si10  1  0.730  0.980  0.250  1.0
  Si  Si11  1  0.270  0.020  0.750  1.0
  Si  Si12  1  0.000  0.250  0.250  1.0
  Si  Si13  1  1.000  0.750  0.750  1.0
  Pt  Pt14  1  0.500  0.250  0.750  1.0
  Pt  Pt15  1  0.500  0.750  0.250  1.0
  Pt  Pt16  1  0.251  0.136  0.115  1.0
  Pt  Pt17  1  0.749  0.864  0.885  1.0
  Pt  Pt18  1  0.021  0.636  0.385  1.0
  Pt  Pt19  1  0.979  0.364  0.615  1.0
[/CIF]
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The crystal structure described by Ca2Pt3Si5 crystallizes in the monoclinic C2/c space group. Ca(1) is bonded in a 17-coordinate geometry to two equivalent Pt(1); five equivalent Pt(2); two equivalent Si(3); four equivalent Si(1); and four Si(2,2) atoms. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 6-coordinate geometry to four equivalent Ca(1); two Si(2,2); and four equivalent Si(1) atoms. In the second Pt site, Pt(2) is bonded in a 5-coordinate geometry to five equivalent Ca(1); one Si(1); two Si(2,2); and two equivalent Si(3) atoms. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to four equivalent Ca(1); one Pt(2); two equivalent Pt(1); and two Si(2,2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Ca(1), one Pt(1), two equivalent Pt(2), and two equivalent Si(1) atoms. In the third Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Ca(1), one Pt(1), two equivalent Pt(2), and two equivalent Si(1) atoms. In the fourth Si site, Si(3) is bonded in a 8-coordinate geometry to four equivalent Ca(1) and four equivalent Pt(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ca2Si5Pt3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.210
_cell_length_b   8.213
_cell_length_c   8.209
_cell_angle_alpha   137.584
_cell_angle_beta   104.513
_cell_angle_gamma   90.691
_symmetry_Int_Tables_number   1
_cell_volume   344.562
_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
  Ca  Ca0  1  0.638  0.371  0.266  1.0
  Ca  Ca1  1  0.362  0.629  0.734  1.0
  Ca  Ca2  1  0.104  0.871  0.233  1.0
  Ca  Ca3  1  0.896  0.129  0.767  1.0
  Si  Si4  1  0.462  0.112  0.350  1.0
  Si  Si5  1  0.538  0.888  0.650  1.0
  Si  Si6  1  0.761  0.612  0.150  1.0
  Si  Si7  1  0.239  0.388  0.850  1.0
  Si  Si8  1  0.270  0.520  0.250  1.0
  Si  Si9  1  0.730  0.480  0.750  1.0
  Si  Si10  1  0.730  0.980  0.250  1.0
  Si  Si11  1  0.270  0.020  0.750  1.0
  Si  Si12  1  0.000  0.250  0.250  1.0
  Si  Si13  1  1.000  0.750  0.750  1.0
  Pt  Pt14  1  0.500  0.250  0.750  1.0
  Pt  Pt15  1  0.500  0.750  0.250  1.0
  Pt  Pt16  1  0.251  0.136  0.115  1.0
  Pt  Pt17  1  0.749  0.864  0.885  1.0
  Pt  Pt18  1  0.021  0.636  0.385  1.0
  Pt  Pt19  1  0.979  0.364  0.615  1.0
[/CIF]
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