The structure described by KCdGeAs2 crystallizes in the triclinic P-1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one As(1), one As(4), two equivalent As(2), and two equivalent As(3) atoms. In the second K site, K(2) is bonded in a 7-coordinate geometry to one As(2), two equivalent As(1), two equivalent As(3), and two equivalent As(4) atoms. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 4-coordinate geometry to one Ge(1), one As(2), one As(3), and two equivalent As(1) atoms. In the second Cd site, Cd(2) is bonded in a distorted trigonal non-coplanar geometry to one As(1), one As(3), and one As(4) atom. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 5-coordinate geometry to one Cd(1), one Ge(1), one As(1), one As(2), and one As(4) atom. In the second Ge site, Ge(2) is bonded to one Ge(2), one As(2), one As(3), and one As(4) atom to form distorted GeGeAs3 tetrahedra that share  a cornercorner with one As(2)K3CdGe2 octahedra and  a cornercorner with one As(4)K3CdGe2 octahedra. The corner-sharing octahedral tilt angles are 79°. There are four inequivalent As sites. In the first As site, As(1) is bonded in a 7-coordinate geometry to one K(1), two equivalent K(2), one Cd(2), two equivalent Cd(1), and one Ge(1) atom. In the second As site, As(2) is bonded to one K(2), two equivalent K(1), one Cd(1), one Ge(1), and one Ge(2) atom to form distorted AsK3CdGe2 octahedra that share corners with two equivalent As(4)K3CdGe2 octahedra,  a cornercorner with one Ge(2)GeAs3 tetrahedra,  an edgeedge with one As(2)K3CdGe2 octahedra, and edges with two equivalent As(4)K3CdGe2 octahedra. The corner-sharing octahedral tilt angles range from 68-97°. In the third As site, As(3) is bonded in a 7-coordinate geometry to two equivalent K(1), two equivalent K(2), one Cd(1), one Cd(2), and one Ge(2) atom. In the fourth As site, As(4) is bonded to one K(1), two equivalent K(2), one Cd(2), one Ge(1), and one Ge(2) atom to form AsK3CdGe2 octahedra that share corners with two equivalent As(2)K3CdGe2 octahedra,  a cornercorner with one Ge(2)GeAs3 tetrahedra,  an edgeedge with one As(4)K3CdGe2 octahedra, and edges with two equivalent As(2)K3CdGe2 octahedra. The corner-sharing octahedral tilt angles range from 68-97°. is represented by the CIF file [CIF]
data_KCdGeAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.244
_cell_length_b   8.612
_cell_length_c   8.869
_cell_angle_alpha   70.762
_cell_angle_beta   75.331
_cell_angle_gamma   73.349
_symmetry_Int_Tables_number   1
_cell_volume   560.775
_cell_formula_units_Z   4
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  0.458  0.765  0.323  1.0
  K  K1  1  0.542  0.235  0.677  1.0
  K  K2  1  0.442  0.802  0.810  1.0
  K  K3  1  0.558  0.198  0.190  1.0
  Cd  Cd4  1  0.994  0.898  0.686  1.0
  Cd  Cd5  1  0.006  0.102  0.314  1.0
  Cd  Cd6  1  0.972  0.823  0.167  1.0
  Cd  Cd7  1  0.028  0.177  0.833  1.0
  Ge  Ge8  1  0.956  0.586  0.599  1.0
  Ge  Ge9  1  0.044  0.414  0.401  1.0
  Ge  Ge10  1  0.157  0.449  0.974  1.0
  Ge  Ge11  1  0.843  0.551  0.026  1.0
  As  As12  1  0.799  0.872  0.463  1.0
  As  As13  1  0.201  0.128  0.537  1.0
  As  As14  1  0.775  0.407  0.319  1.0
  As  As15  1  0.225  0.593  0.681  1.0
  As  As16  1  0.761  0.867  0.964  1.0
  As  As17  1  0.239  0.133  0.036  1.0
  As  As18  1  0.756  0.447  0.833  1.0
  As  As19  1  0.244  0.553  0.167  1.0
[/CIF]
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The structure described by KCdGeAs2 crystallizes in the triclinic P-1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one As(1), one As(4), two equivalent As(2), and two equivalent As(3) atoms. In the second K site, K(2) is bonded in a 7-coordinate geometry to one As(2), two equivalent As(1), two equivalent As(3), and two equivalent As(4) atoms. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 4-coordinate geometry to one Ge(1), one As(2), one As(3), and two equivalent As(1) atoms. In the second Cd site, Cd(2) is bonded in a distorted trigonal non-coplanar geometry to one As(1), one As(3), and one As(4) atom. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 5-coordinate geometry to one Cd(1), one Ge(1), one As(1), one As(2), and one As(4) atom. In the second Ge site, Ge(2) is bonded to one Ge(2), one As(2), one As(3), and one As(4) atom to form distorted GeGeAs3 tetrahedra that share  a cornercorner with one As(2)K3CdGe2 octahedra and  a cornercorner with one As(4)K3CdGe2 octahedra. The corner-sharing octahedral tilt angles are 79°. There are four inequivalent As sites. In the first As site, As(1) is bonded in a 7-coordinate geometry to one K(1), two equivalent K(2), one Cd(2), two equivalent Cd(1), and one Ge(1) atom. In the second As site, As(2) is bonded to one K(2), two equivalent K(1), one Cd(1), one Ge(1), and one Ge(2) atom to form distorted AsK3CdGe2 octahedra that share corners with two equivalent As(4)K3CdGe2 octahedra,  a cornercorner with one Ge(2)GeAs3 tetrahedra,  an edgeedge with one As(2)K3CdGe2 octahedra, and edges with two equivalent As(4)K3CdGe2 octahedra. The corner-sharing octahedral tilt angles range from 68-97°. In the third As site, As(3) is bonded in a 7-coordinate geometry to two equivalent K(1), two equivalent K(2), one Cd(1), one Cd(2), and one Ge(2) atom. In the fourth As site, As(4) is bonded to one K(1), two equivalent K(2), one Cd(2), one Ge(1), and one Ge(2) atom to form AsK3CdGe2 octahedra that share corners with two equivalent As(2)K3CdGe2 octahedra,  a cornercorner with one Ge(2)GeAs3 tetrahedra,  an edgeedge with one As(4)K3CdGe2 octahedra, and edges with two equivalent As(2)K3CdGe2 octahedra. The corner-sharing octahedral tilt angles range from 68-97°. is represented by the CIF file [CIF]
data_KCdGeAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.244
_cell_length_b   8.612
_cell_length_c   8.869
_cell_angle_alpha   70.762
_cell_angle_beta   75.331
_cell_angle_gamma   73.349
_symmetry_Int_Tables_number   1
_cell_volume   560.775
_cell_formula_units_Z   4
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  0.458  0.765  0.323  1.0
  K  K1  1  0.542  0.235  0.677  1.0
  K  K2  1  0.442  0.802  0.810  1.0
  K  K3  1  0.558  0.198  0.190  1.0
  Cd  Cd4  1  0.994  0.898  0.686  1.0
  Cd  Cd5  1  0.006  0.102  0.314  1.0
  Cd  Cd6  1  0.972  0.823  0.167  1.0
  Cd  Cd7  1  0.028  0.177  0.833  1.0
  Ge  Ge8  1  0.956  0.586  0.599  1.0
  Ge  Ge9  1  0.044  0.414  0.401  1.0
  Ge  Ge10  1  0.157  0.449  0.974  1.0
  Ge  Ge11  1  0.843  0.551  0.026  1.0
  As  As12  1  0.799  0.872  0.463  1.0
  As  As13  1  0.201  0.128  0.537  1.0
  As  As14  1  0.775  0.407  0.319  1.0
  As  As15  1  0.225  0.593  0.681  1.0
  As  As16  1  0.761  0.867  0.964  1.0
  As  As17  1  0.239  0.133  0.036  1.0
  As  As18  1  0.756  0.447  0.833  1.0
  As  As19  1  0.244  0.553  0.167  1.0
[/CIF]
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