The material described by Cd2GeAs4 is Chalcostibite-like structured and crystallizes in the orthorhombic Pnma space group. Cd(1) is bonded in a 4-coordinate geometry to two equivalent As(1) and two equivalent As(2) atoms. Ge(1) is bonded to one As(1), one As(3), and two equivalent As(2) atoms to form GeAs4 tetrahedra that share corners with two equivalent As(2)Cd2GeAs tetrahedra. There are three inequivalent As sites. In the first As site, As(1) is bonded to four equivalent Cd(1) and one Ge(1) atom to form distorted AsCd4Ge trigonal bipyramids that share corners with ten equivalent As(2)Cd2GeAs tetrahedra and edges with two equivalent As(1)Cd4Ge trigonal bipyramids. In the second As site, As(2) is bonded to two equivalent Cd(1), one Ge(1), and one As(3) atom to form distorted AsCd2GeAs tetrahedra that share  a cornercorner with one Ge(1)As4 tetrahedra, corners with four equivalent As(2)Cd2GeAs tetrahedra, and corners with five equivalent As(1)Cd4Ge trigonal bipyramids. In the third As site, As(3) is bonded in a 3-coordinate geometry to one Ge(1) and two equivalent As(2) atoms. is represented by the CIF file [CIF]
data_Cd2GeAs4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.375
_cell_length_b   7.555
_cell_length_c   12.934
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   720.652
_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
  Cd  Cd0  1  0.594  0.976  0.870  1.0
  Cd  Cd1  1  0.094  0.524  0.630  1.0
  Cd  Cd2  1  0.406  0.476  0.130  1.0
  Cd  Cd3  1  0.906  0.024  0.370  1.0
  Cd  Cd4  1  0.094  0.976  0.630  1.0
  Cd  Cd5  1  0.594  0.524  0.870  1.0
  Cd  Cd6  1  0.906  0.476  0.370  1.0
  Cd  Cd7  1  0.406  0.024  0.130  1.0
  Ge  Ge8  1  0.918  0.750  0.081  1.0
  Ge  Ge9  1  0.418  0.750  0.419  1.0
  Ge  Ge10  1  0.082  0.250  0.919  1.0
  Ge  Ge11  1  0.582  0.250  0.581  1.0
  As  As12  1  0.408  0.250  0.961  1.0
  As  As13  1  0.456  0.512  0.675  1.0
  As  As14  1  0.044  0.488  0.175  1.0
  As  As15  1  0.544  0.012  0.325  1.0
  As  As16  1  0.908  0.250  0.539  1.0
  As  As17  1  0.612  0.750  0.578  1.0
  As  As18  1  0.092  0.750  0.461  1.0
  As  As19  1  0.592  0.750  0.039  1.0
  As  As20  1  0.388  0.250  0.422  1.0
  As  As21  1  0.888  0.250  0.078  1.0
  As  As22  1  0.044  0.012  0.175  1.0
  As  As23  1  0.112  0.750  0.922  1.0
  As  As24  1  0.456  0.988  0.675  1.0
  As  As25  1  0.544  0.488  0.325  1.0
  As  As26  1  0.956  0.512  0.825  1.0
  As  As27  1  0.956  0.988  0.825  1.0
[/CIF]
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The material described by Cd2GeAs4 is Chalcostibite-like structured and crystallizes in the orthorhombic Pnma space group. Cd(1) is bonded in a 4-coordinate geometry to two equivalent As(1) and two equivalent As(2) atoms. Ge(1) is bonded to one As(1), one As(3), and two equivalent As(2) atoms to form GeAs4 tetrahedra that share corners with two equivalent As(2)Cd2GeAs tetrahedra. There are three inequivalent As sites. In the first As site, As(1) is bonded to four equivalent Cd(1) and one Ge(1) atom to form distorted AsCd4Ge trigonal bipyramids that share corners with ten equivalent As(2)Cd2GeAs tetrahedra and edges with two equivalent As(1)Cd4Ge trigonal bipyramids. In the second As site, As(2) is bonded to two equivalent Cd(1), one Ge(1), and one As(3) atom to form distorted AsCd2GeAs tetrahedra that share  a cornercorner with one Ge(1)As4 tetrahedra, corners with four equivalent As(2)Cd2GeAs tetrahedra, and corners with five equivalent As(1)Cd4Ge trigonal bipyramids. In the third As site, As(3) is bonded in a 3-coordinate geometry to one Ge(1) and two equivalent As(2) atoms. is represented by the CIF file [CIF]
data_Cd2GeAs4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.375
_cell_length_b   7.555
_cell_length_c   12.934
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   720.652
_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
  Cd  Cd0  1  0.594  0.976  0.870  1.0
  Cd  Cd1  1  0.094  0.524  0.630  1.0
  Cd  Cd2  1  0.406  0.476  0.130  1.0
  Cd  Cd3  1  0.906  0.024  0.370  1.0
  Cd  Cd4  1  0.094  0.976  0.630  1.0
  Cd  Cd5  1  0.594  0.524  0.870  1.0
  Cd  Cd6  1  0.906  0.476  0.370  1.0
  Cd  Cd7  1  0.406  0.024  0.130  1.0
  Ge  Ge8  1  0.918  0.750  0.081  1.0
  Ge  Ge9  1  0.418  0.750  0.419  1.0
  Ge  Ge10  1  0.082  0.250  0.919  1.0
  Ge  Ge11  1  0.582  0.250  0.581  1.0
  As  As12  1  0.408  0.250  0.961  1.0
  As  As13  1  0.456  0.512  0.675  1.0
  As  As14  1  0.044  0.488  0.175  1.0
  As  As15  1  0.544  0.012  0.325  1.0
  As  As16  1  0.908  0.250  0.539  1.0
  As  As17  1  0.612  0.750  0.578  1.0
  As  As18  1  0.092  0.750  0.461  1.0
  As  As19  1  0.592  0.750  0.039  1.0
  As  As20  1  0.388  0.250  0.422  1.0
  As  As21  1  0.888  0.250  0.078  1.0
  As  As22  1  0.044  0.012  0.175  1.0
  As  As23  1  0.112  0.750  0.922  1.0
  As  As24  1  0.456  0.988  0.675  1.0
  As  As25  1  0.544  0.488  0.325  1.0
  As  As26  1  0.956  0.512  0.825  1.0
  As  As27  1  0.956  0.988  0.825  1.0
[/CIF]
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