The material structure described by K2Zn3GeAs4 crystallizes in the orthorhombic C222 space group. K(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 in a tetrahedral geometry to four equivalent As(1) atoms. In the second Zn site, Zn(2) is bonded in a 4-coordinate geometry to two equivalent Ge(1) and four equivalent As(1) atoms. In the third Zn site, Zn(3) is bonded in a 4-coordinate geometry to two equivalent Ge(1) and four equivalent As(1) atoms. 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 K(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_K2Zn3GeAs4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.857
_cell_length_b   7.857
_cell_length_c   5.833
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   136.326
_symmetry_Int_Tables_number   1
_cell_volume   248.653
_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
  K  K0  1  0.500  0.000  0.247  1.0
  K  K1  1  0.000  0.500  0.753  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  0.650  0.864  0.757  1.0
  As  As7  1  0.136  0.350  0.243  1.0
  As  As8  1  0.864  0.650  0.243  1.0
  As  As9  1  0.350  0.136  0.757  1.0
[/CIF]
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The material structure described by K2Zn3GeAs4 crystallizes in the orthorhombic C222 space group. K(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 in a tetrahedral geometry to four equivalent As(1) atoms. In the second Zn site, Zn(2) is bonded in a 4-coordinate geometry to two equivalent Ge(1) and four equivalent As(1) atoms. In the third Zn site, Zn(3) is bonded in a 4-coordinate geometry to two equivalent Ge(1) and four equivalent As(1) atoms. 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 K(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_K2Zn3GeAs4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.857
_cell_length_b   7.857
_cell_length_c   5.833
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   136.326
_symmetry_Int_Tables_number   1
_cell_volume   248.653
_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
  K  K0  1  0.500  0.000  0.247  1.0
  K  K1  1  0.000  0.500  0.753  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  0.650  0.864  0.757  1.0
  As  As7  1  0.136  0.350  0.243  1.0
  As  As8  1  0.864  0.650  0.243  1.0
  As  As9  1  0.350  0.136  0.757  1.0
[/CIF]
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