The crystal structure described by Sr(Pt2As3)2 crystallizes in the monoclinic C2/c space group. Sr(1) is bonded in a 6-coordinate geometry to two equivalent Pt(2) and four equivalent Pt(1) atoms. There are three inequivalent Pt sites. In the first Pt site, Pt(3) is bonded to two equivalent As(1), two equivalent As(2), and two equivalent As(3) atoms to form PtAs6 octahedra that share corners with four equivalent Pt(2)Sr2As4 octahedra, corners with eight equivalent Pt(1)Sr2As4 octahedra, corners with two equivalent As(2)AsPt3 tetrahedra, and corners with two equivalent As(3)AsPt3 tetrahedra. The corner-sharing octahedral tilt angles range from 60-65°. In the second Pt site, Pt(1) is bonded to two equivalent Sr(1), one As(2), one As(3), and two equivalent As(1) atoms to form PtSr2As4 octahedra that share corners with two equivalent Pt(2)Sr2As4 octahedra, corners with four equivalent Pt(3)As6 octahedra, corners with four equivalent Pt(1)Sr2As4 octahedra,  a cornercorner with one As(2)AsPt3 tetrahedra,  a cornercorner with one As(3)AsPt3 tetrahedra, edges with two equivalent Pt(1)Sr2As4 octahedra, and edges with two equivalent Pt(2)Sr2As4 octahedra. The corner-sharing octahedral tilt angles range from 20-108°. In the third Pt site, Pt(2) is bonded to two equivalent Sr(1), two equivalent As(2), and two equivalent As(3) atoms to form PtSr2As4 octahedra that share corners with two equivalent Pt(2)Sr2As4 octahedra, corners with four equivalent Pt(3)As6 octahedra, corners with four equivalent Pt(1)Sr2As4 octahedra, corners with two equivalent As(2)AsPt3 tetrahedra, corners with two equivalent As(3)AsPt3 tetrahedra, and edges with four equivalent Pt(1)Sr2As4 octahedra. The corner-sharing octahedral tilt angles range from 30-83°. There are three inequivalent As sites. In the first As site, As(1) is bonded in a 4-coordinate geometry to one Pt(3), two equivalent Pt(1), and one As(1) atom. In the second As site, As(2) is bonded to one Pt(1), one Pt(2), one Pt(3), and one As(2) atom to form distorted AsAsPt3 tetrahedra that share  a cornercorner with one Pt(3)As6 octahedra,  a cornercorner with one Pt(1)Sr2As4 octahedra,  a cornercorner with one Pt(2)Sr2As4 octahedra, corners with two equivalent As(2)AsPt3 tetrahedra, and corners with five equivalent As(3)AsPt3 tetrahedra. The corner-sharing octahedral tilt angles range from 73-78°. In the third As site, As(3) is bonded to one Pt(1), one Pt(2), one Pt(3), and one As(3) atom to form AsAsPt3 tetrahedra that share  a cornercorner with one Pt(3)As6 octahedra,  a cornercorner with one Pt(1)Sr2As4 octahedra,  a cornercorner with one Pt(2)Sr2As4 octahedra, corners with two equivalent As(3)AsPt3 tetrahedra, and corners with five equivalent As(2)AsPt3 tetrahedra. The corner-sharing octahedral tilt angles range from 74-77°. is represented by the CIF card [CIF]
data_Sr(As3Pt2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.018
_cell_length_b   6.018
_cell_length_c   12.038
_cell_angle_alpha   89.330
_cell_angle_beta   89.330
_cell_angle_gamma   88.193
_symmetry_Int_Tables_number   1
_cell_volume   435.674
_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
  Sr  Sr0  1  0.596  0.404  0.250  1.0
  Sr  Sr1  1  0.404  0.596  0.750  1.0
  As  As2  1  0.864  0.904  0.692  1.0
  As  As3  1  0.096  0.136  0.808  1.0
  As  As4  1  0.136  0.096  0.308  1.0
  As  As5  1  0.904  0.864  0.192  1.0
  As  As6  1  0.120  0.377  0.056  1.0
  As  As7  1  0.623  0.880  0.444  1.0
  As  As8  1  0.880  0.623  0.944  1.0
  As  As9  1  0.377  0.120  0.556  1.0
  As  As10  1  0.615  0.123  0.945  1.0
  As  As11  1  0.877  0.385  0.555  1.0
  As  As12  1  0.123  0.615  0.445  1.0
  As  As13  1  0.385  0.877  0.055  1.0
  Pt  Pt14  1  0.076  0.493  0.250  1.0
  Pt  Pt15  1  0.507  0.924  0.250  1.0
  Pt  Pt16  1  0.500  0.500  0.500  1.0
  Pt  Pt17  1  0.500  0.500  0.000  1.0
  Pt  Pt18  1  0.000  0.000  0.500  1.0
  Pt  Pt19  1  0.000  0.000  0.000  1.0
  Pt  Pt20  1  0.493  0.076  0.750  1.0
  Pt  Pt21  1  0.924  0.507  0.750  1.0
[/CIF]
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The crystal structure described by Sr(Pt2As3)2 crystallizes in the monoclinic C2/c space group. Sr(1) is bonded in a 6-coordinate geometry to two equivalent Pt(2) and four equivalent Pt(1) atoms. There are three inequivalent Pt sites. In the first Pt site, Pt(3) is bonded to two equivalent As(1), two equivalent As(2), and two equivalent As(3) atoms to form PtAs6 octahedra that share corners with four equivalent Pt(2)Sr2As4 octahedra, corners with eight equivalent Pt(1)Sr2As4 octahedra, corners with two equivalent As(2)AsPt3 tetrahedra, and corners with two equivalent As(3)AsPt3 tetrahedra. The corner-sharing octahedral tilt angles range from 60-65°. In the second Pt site, Pt(1) is bonded to two equivalent Sr(1), one As(2), one As(3), and two equivalent As(1) atoms to form PtSr2As4 octahedra that share corners with two equivalent Pt(2)Sr2As4 octahedra, corners with four equivalent Pt(3)As6 octahedra, corners with four equivalent Pt(1)Sr2As4 octahedra,  a cornercorner with one As(2)AsPt3 tetrahedra,  a cornercorner with one As(3)AsPt3 tetrahedra, edges with two equivalent Pt(1)Sr2As4 octahedra, and edges with two equivalent Pt(2)Sr2As4 octahedra. The corner-sharing octahedral tilt angles range from 20-108°. In the third Pt site, Pt(2) is bonded to two equivalent Sr(1), two equivalent As(2), and two equivalent As(3) atoms to form PtSr2As4 octahedra that share corners with two equivalent Pt(2)Sr2As4 octahedra, corners with four equivalent Pt(3)As6 octahedra, corners with four equivalent Pt(1)Sr2As4 octahedra, corners with two equivalent As(2)AsPt3 tetrahedra, corners with two equivalent As(3)AsPt3 tetrahedra, and edges with four equivalent Pt(1)Sr2As4 octahedra. The corner-sharing octahedral tilt angles range from 30-83°. There are three inequivalent As sites. In the first As site, As(1) is bonded in a 4-coordinate geometry to one Pt(3), two equivalent Pt(1), and one As(1) atom. In the second As site, As(2) is bonded to one Pt(1), one Pt(2), one Pt(3), and one As(2) atom to form distorted AsAsPt3 tetrahedra that share  a cornercorner with one Pt(3)As6 octahedra,  a cornercorner with one Pt(1)Sr2As4 octahedra,  a cornercorner with one Pt(2)Sr2As4 octahedra, corners with two equivalent As(2)AsPt3 tetrahedra, and corners with five equivalent As(3)AsPt3 tetrahedra. The corner-sharing octahedral tilt angles range from 73-78°. In the third As site, As(3) is bonded to one Pt(1), one Pt(2), one Pt(3), and one As(3) atom to form AsAsPt3 tetrahedra that share  a cornercorner with one Pt(3)As6 octahedra,  a cornercorner with one Pt(1)Sr2As4 octahedra,  a cornercorner with one Pt(2)Sr2As4 octahedra, corners with two equivalent As(3)AsPt3 tetrahedra, and corners with five equivalent As(2)AsPt3 tetrahedra. The corner-sharing octahedral tilt angles range from 74-77°. is represented by the CIF card [CIF]
data_Sr(As3Pt2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.018
_cell_length_b   6.018
_cell_length_c   12.038
_cell_angle_alpha   89.330
_cell_angle_beta   89.330
_cell_angle_gamma   88.193
_symmetry_Int_Tables_number   1
_cell_volume   435.674
_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
  Sr  Sr0  1  0.596  0.404  0.250  1.0
  Sr  Sr1  1  0.404  0.596  0.750  1.0
  As  As2  1  0.864  0.904  0.692  1.0
  As  As3  1  0.096  0.136  0.808  1.0
  As  As4  1  0.136  0.096  0.308  1.0
  As  As5  1  0.904  0.864  0.192  1.0
  As  As6  1  0.120  0.377  0.056  1.0
  As  As7  1  0.623  0.880  0.444  1.0
  As  As8  1  0.880  0.623  0.944  1.0
  As  As9  1  0.377  0.120  0.556  1.0
  As  As10  1  0.615  0.123  0.945  1.0
  As  As11  1  0.877  0.385  0.555  1.0
  As  As12  1  0.123  0.615  0.445  1.0
  As  As13  1  0.385  0.877  0.055  1.0
  Pt  Pt14  1  0.076  0.493  0.250  1.0
  Pt  Pt15  1  0.507  0.924  0.250  1.0
  Pt  Pt16  1  0.500  0.500  0.500  1.0
  Pt  Pt17  1  0.500  0.500  0.000  1.0
  Pt  Pt18  1  0.000  0.000  0.500  1.0
  Pt  Pt19  1  0.000  0.000  0.000  1.0
  Pt  Pt20  1  0.493  0.076  0.750  1.0
  Pt  Pt21  1  0.924  0.507  0.750  1.0
[/CIF]
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