The material described by Rb2Zn3GeAs4 crystallizes in the orthorhombic C222 space group. Rb(1) is bonded in a body-centered cubic geometry to eight equivalent As(1) atoms. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to four equivalent As(1) atoms to form edge-sharing ZnAs4 tetrahedra. In the second Zn site, Zn(2) is bonded to two equivalent Ge(1) and four equivalent As(1) atoms to form distorted ZnGe2As4 tetrahedra that share corners with two equivalent Zn(2)Ge2As4 tetrahedra, edges with two equivalent Zn(1)As4 tetrahedra, and edges with four equivalent Zn(3)Ge2As4 tetrahedra. In the third Zn site, Zn(3) is bonded to two equivalent Ge(1) and four equivalent As(1) atoms to form distorted ZnGe2As4 tetrahedra that share corners with two equivalent Zn(3)Ge2As4 tetrahedra, edges with two equivalent Zn(1)As4 tetrahedra, and edges with four equivalent Zn(2)Ge2As4 tetrahedra. Ge(1) is bonded in a 8-coordinate geometry to two equivalent Zn(2), two equivalent Zn(3), and four equivalent As(1) atoms. As(1) is bonded in a 8-coordinate geometry to four equivalent Rb(1), one Zn(1), one Zn(2), one Zn(3), and one Ge(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2Zn3GeAs4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.016
_cell_length_b   8.016
_cell_length_c   5.883
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   136.892
_symmetry_Int_Tables_number   1
_cell_volume   258.316
_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
  Rb  Rb0  1  0.500  0.000  0.249  1.0
  Rb  Rb1  1  0.000  0.500  0.751  1.0
  Zn  Zn2  1  0.500  0.500  0.500  1.0
  Zn  Zn3  1  0.500  0.500  0.000  1.0
  Zn  Zn4  1  0.000  0.000  0.500  1.0
  Ge  Ge5  1  0.000  0.000  0.000  1.0
  As  As6  1  0.655  0.860  0.757  1.0
  As  As7  1  0.140  0.345  0.243  1.0
  As  As8  1  0.860  0.655  0.243  1.0
  As  As9  1  0.345  0.140  0.757  1.0
[/CIF]
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The material described by Rb2Zn3GeAs4 crystallizes in the orthorhombic C222 space group. Rb(1) is bonded in a body-centered cubic geometry to eight equivalent As(1) atoms. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to four equivalent As(1) atoms to form edge-sharing ZnAs4 tetrahedra. In the second Zn site, Zn(2) is bonded to two equivalent Ge(1) and four equivalent As(1) atoms to form distorted ZnGe2As4 tetrahedra that share corners with two equivalent Zn(2)Ge2As4 tetrahedra, edges with two equivalent Zn(1)As4 tetrahedra, and edges with four equivalent Zn(3)Ge2As4 tetrahedra. In the third Zn site, Zn(3) is bonded to two equivalent Ge(1) and four equivalent As(1) atoms to form distorted ZnGe2As4 tetrahedra that share corners with two equivalent Zn(3)Ge2As4 tetrahedra, edges with two equivalent Zn(1)As4 tetrahedra, and edges with four equivalent Zn(2)Ge2As4 tetrahedra. Ge(1) is bonded in a 8-coordinate geometry to two equivalent Zn(2), two equivalent Zn(3), and four equivalent As(1) atoms. As(1) is bonded in a 8-coordinate geometry to four equivalent Rb(1), one Zn(1), one Zn(2), one Zn(3), and one Ge(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2Zn3GeAs4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.016
_cell_length_b   8.016
_cell_length_c   5.883
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   136.892
_symmetry_Int_Tables_number   1
_cell_volume   258.316
_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
  Rb  Rb0  1  0.500  0.000  0.249  1.0
  Rb  Rb1  1  0.000  0.500  0.751  1.0
  Zn  Zn2  1  0.500  0.500  0.500  1.0
  Zn  Zn3  1  0.500  0.500  0.000  1.0
  Zn  Zn4  1  0.000  0.000  0.500  1.0
  Ge  Ge5  1  0.000  0.000  0.000  1.0
  As  As6  1  0.655  0.860  0.757  1.0
  As  As7  1  0.140  0.345  0.243  1.0
  As  As8  1  0.860  0.655  0.243  1.0
  As  As9  1  0.345  0.140  0.757  1.0
[/CIF]
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