The crystal structure described by SrMn2As2 crystallizes in the trigonal P-3m1 space group. Sr(1) is bonded to six equivalent As(1) atoms to form distorted SrAs6 octahedra that share corners with twelve equivalent Mn(1)As4 tetrahedra, edges with six equivalent Sr(1)As6 octahedra, and edges with six equivalent Mn(1)As4 tetrahedra. Mn(1) is bonded to four equivalent As(1) atoms to form MnAs4 tetrahedra that share corners with six equivalent Sr(1)As6 octahedra, corners with six equivalent Mn(1)As4 tetrahedra, edges with three equivalent Sr(1)As6 octahedra, and edges with three equivalent Mn(1)As4 tetrahedra. The corner-sharing octahedral tilt angles range from 23-49°. As(1) is bonded in a 7-coordinate geometry to three equivalent Sr(1) and four equivalent Mn(1) atoms. is represented by the CIF card [CIF]
data_Sr(MnAs)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.076
_cell_length_b   4.076
_cell_length_c   7.351
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   105.789
_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
  Sr  Sr0  1  0.000  0.000  0.000  1.0
  Mn  Mn1  1  0.667  0.333  0.388  1.0
  Mn  Mn2  1  0.333  0.667  0.612  1.0
  As  As3  1  0.667  0.333  0.718  1.0
  As  As4  1  0.333  0.667  0.282  1.0
[/CIF]
.
The crystal structure described by SrMn2As2 crystallizes in the trigonal P-3m1 space group. Sr(1) is bonded to six equivalent As(1) atoms to form distorted SrAs6 octahedra that share corners with twelve equivalent Mn(1)As4 tetrahedra, edges with six equivalent Sr(1)As6 octahedra, and edges with six equivalent Mn(1)As4 tetrahedra. Mn(1) is bonded to four equivalent As(1) atoms to form MnAs4 tetrahedra that share corners with six equivalent Sr(1)As6 octahedra, corners with six equivalent Mn(1)As4 tetrahedra, edges with three equivalent Sr(1)As6 octahedra, and edges with three equivalent Mn(1)As4 tetrahedra. The corner-sharing octahedral tilt angles range from 23-49°. As(1) is bonded in a 7-coordinate geometry to three equivalent Sr(1) and four equivalent Mn(1) atoms. is represented by the CIF card [CIF]
data_Sr(MnAs)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.076
_cell_length_b   4.076
_cell_length_c   7.351
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   105.789
_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
  Sr  Sr0  1  0.000  0.000  0.000  1.0
  Mn  Mn1  1  0.667  0.333  0.388  1.0
  Mn  Mn2  1  0.333  0.667  0.612  1.0
  As  As3  1  0.667  0.333  0.718  1.0
  As  As4  1  0.333  0.667  0.282  1.0
[/CIF]
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