The structure described by YbMn2As2 crystallizes in the trigonal P-3m1 space group. Yb(1) is bonded to six equivalent As(1) atoms to form YbAs6 octahedra that share corners with twelve equivalent Mn(1)As4 tetrahedra, edges with six equivalent Yb(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 Yb(1)As6 octahedra, corners with six equivalent Mn(1)As4 tetrahedra, edges with three equivalent Yb(1)As6 octahedra, and edges with three equivalent Mn(1)As4 tetrahedra. The corner-sharing octahedral tilt angles range from 20-51°. As(1) is bonded to three equivalent Yb(1) and four equivalent Mn(1) atoms to form a mixture of distorted corner and edge-sharing AsYb3Mn4 pentagonal bipyramids. is represented by the CIF file [CIF]
data_Yb(MnAs)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.988
_cell_length_b   3.988
_cell_length_c   6.917
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   95.289
_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
  Yb  Yb0  1  0.000  0.000  0.000  1.0
  Mn  Mn1  1  0.667  0.333  0.383  1.0
  Mn  Mn2  1  0.333  0.667  0.617  1.0
  As  As3  1  0.667  0.333  0.732  1.0
  As  As4  1  0.333  0.667  0.268  1.0
[/CIF]
.
The structure described by YbMn2As2 crystallizes in the trigonal P-3m1 space group. Yb(1) is bonded to six equivalent As(1) atoms to form YbAs6 octahedra that share corners with twelve equivalent Mn(1)As4 tetrahedra, edges with six equivalent Yb(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 Yb(1)As6 octahedra, corners with six equivalent Mn(1)As4 tetrahedra, edges with three equivalent Yb(1)As6 octahedra, and edges with three equivalent Mn(1)As4 tetrahedra. The corner-sharing octahedral tilt angles range from 20-51°. As(1) is bonded to three equivalent Yb(1) and four equivalent Mn(1) atoms to form a mixture of distorted corner and edge-sharing AsYb3Mn4 pentagonal bipyramids. is represented by the CIF file [CIF]
data_Yb(MnAs)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.988
_cell_length_b   3.988
_cell_length_c   6.917
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   95.289
_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
  Yb  Yb0  1  0.000  0.000  0.000  1.0
  Mn  Mn1  1  0.667  0.333  0.383  1.0
  Mn  Mn2  1  0.333  0.667  0.617  1.0
  As  As3  1  0.667  0.333  0.732  1.0
  As  As4  1  0.333  0.667  0.268  1.0
[/CIF]
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