The material structure described by Ca3Au9Ge2 crystallizes in the orthorhombic Pnnm space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 16-coordinate geometry to two equivalent Au(1), two equivalent Au(5), three equivalent Au(2), three equivalent Au(3), three equivalent Au(4), and three equivalent Ge(1) atoms. In the second Ca site, Ca(2) is bonded in a 8-coordinate geometry to two equivalent Au(2), two equivalent Au(3), four equivalent Au(1), and four equivalent Au(4) atoms. There are five inequivalent Au sites. In the first Au site, Au(1) is bonded to two equivalent Ca(1), two equivalent Ca(2), one Au(4), two equivalent Au(2), two equivalent Au(3), two equivalent Au(5), and one Ge(1) atom to form distorted AuCa4GeAu7 cuboctahedra that share corners with four equivalent Au(1)Ca4GeAu7 cuboctahedra,  an edgeedge with one Au(1)Ca4GeAu7 cuboctahedra, faces with two equivalent Au(5)Ca4Au8 cuboctahedra, and faces with three equivalent Au(1)Ca4GeAu7 cuboctahedra. In the second Au site, Au(2) is bonded in a 4-coordinate geometry to one Ca(2), three equivalent Ca(1), one Au(5), two equivalent Au(1), and one Ge(1) atom. In the third Au site, Au(3) is bonded in a 10-coordinate geometry to one Ca(2), three equivalent Ca(1), one Au(4), one Au(5), two equivalent Au(1), and two equivalent Ge(1) atoms. In the fourth Au site, Au(4) is bonded in a 1-coordinate geometry to two equivalent Ca(2), three equivalent Ca(1), one Au(1), one Au(3), and one Ge(1) atom. In the fifth Au site, Au(5) is bonded to four equivalent Ca(1), two equivalent Au(2), two equivalent Au(3), and four equivalent Au(1) atoms to form AuCa4Au8 cuboctahedra that share faces with two equivalent Au(5)Ca4Au8 cuboctahedra and faces with four equivalent Au(1)Ca4GeAu7 cuboctahedra. Ge(1) is bonded in a 8-coordinate geometry to three equivalent Ca(1), one Au(1), one Au(2), one Au(4), and two equivalent Au(3) atoms. is represented by the CIF file [CIF]
data_Ca3Ge2Au9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.479
_cell_length_b   9.403
_cell_length_c   13.610
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   573.182
_cell_formula_units_Z   2
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
  Ca  Ca0  1  0.000  0.993  0.187  1.0
  Ca  Ca1  1  0.000  0.007  0.813  1.0
  Ca  Ca2  1  0.500  0.507  0.687  1.0
  Ca  Ca3  1  0.500  0.493  0.313  1.0
  Ca  Ca4  1  0.000  0.000  0.500  1.0
  Ca  Ca5  1  0.500  0.500  0.000  1.0
  Ge  Ge6  1  0.000  0.340  0.184  1.0
  Ge  Ge7  1  0.000  0.660  0.816  1.0
  Ge  Ge8  1  0.500  0.160  0.684  1.0
  Ge  Ge9  1  0.500  0.840  0.316  1.0
  Au  Au10  1  0.000  0.209  0.002  1.0
  Au  Au11  1  0.000  0.791  0.998  1.0
  Au  Au12  1  0.500  0.291  0.502  1.0
  Au  Au13  1  0.500  0.709  0.498  1.0
  Au  Au14  1  0.000  0.277  0.366  1.0
  Au  Au15  1  0.000  0.723  0.634  1.0
  Au  Au16  1  0.500  0.223  0.866  1.0
  Au  Au17  1  0.500  0.777  0.134  1.0
  Au  Au18  1  0.000  0.263  0.633  1.0
  Au  Au19  1  0.000  0.737  0.367  1.0
  Au  Au20  1  0.500  0.237  0.133  1.0
  Au  Au21  1  0.500  0.763  0.867  1.0
  Au  Au22  1  0.000  0.600  0.159  1.0
  Au  Au23  1  0.000  0.400  0.841  1.0
  Au  Au24  1  0.500  0.900  0.659  1.0
  Au  Au25  1  0.500  0.100  0.341  1.0
  Au  Au26  1  0.500  0.000  0.000  1.0
  Au  Au27  1  0.000  0.500  0.500  1.0
[/CIF]
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The material structure described by Ca3Au9Ge2 crystallizes in the orthorhombic Pnnm space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 16-coordinate geometry to two equivalent Au(1), two equivalent Au(5), three equivalent Au(2), three equivalent Au(3), three equivalent Au(4), and three equivalent Ge(1) atoms. In the second Ca site, Ca(2) is bonded in a 8-coordinate geometry to two equivalent Au(2), two equivalent Au(3), four equivalent Au(1), and four equivalent Au(4) atoms. There are five inequivalent Au sites. In the first Au site, Au(1) is bonded to two equivalent Ca(1), two equivalent Ca(2), one Au(4), two equivalent Au(2), two equivalent Au(3), two equivalent Au(5), and one Ge(1) atom to form distorted AuCa4GeAu7 cuboctahedra that share corners with four equivalent Au(1)Ca4GeAu7 cuboctahedra,  an edgeedge with one Au(1)Ca4GeAu7 cuboctahedra, faces with two equivalent Au(5)Ca4Au8 cuboctahedra, and faces with three equivalent Au(1)Ca4GeAu7 cuboctahedra. In the second Au site, Au(2) is bonded in a 4-coordinate geometry to one Ca(2), three equivalent Ca(1), one Au(5), two equivalent Au(1), and one Ge(1) atom. In the third Au site, Au(3) is bonded in a 10-coordinate geometry to one Ca(2), three equivalent Ca(1), one Au(4), one Au(5), two equivalent Au(1), and two equivalent Ge(1) atoms. In the fourth Au site, Au(4) is bonded in a 1-coordinate geometry to two equivalent Ca(2), three equivalent Ca(1), one Au(1), one Au(3), and one Ge(1) atom. In the fifth Au site, Au(5) is bonded to four equivalent Ca(1), two equivalent Au(2), two equivalent Au(3), and four equivalent Au(1) atoms to form AuCa4Au8 cuboctahedra that share faces with two equivalent Au(5)Ca4Au8 cuboctahedra and faces with four equivalent Au(1)Ca4GeAu7 cuboctahedra. Ge(1) is bonded in a 8-coordinate geometry to three equivalent Ca(1), one Au(1), one Au(2), one Au(4), and two equivalent Au(3) atoms. is represented by the CIF file [CIF]
data_Ca3Ge2Au9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.479
_cell_length_b   9.403
_cell_length_c   13.610
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   573.182
_cell_formula_units_Z   2
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
  Ca  Ca0  1  0.000  0.993  0.187  1.0
  Ca  Ca1  1  0.000  0.007  0.813  1.0
  Ca  Ca2  1  0.500  0.507  0.687  1.0
  Ca  Ca3  1  0.500  0.493  0.313  1.0
  Ca  Ca4  1  0.000  0.000  0.500  1.0
  Ca  Ca5  1  0.500  0.500  0.000  1.0
  Ge  Ge6  1  0.000  0.340  0.184  1.0
  Ge  Ge7  1  0.000  0.660  0.816  1.0
  Ge  Ge8  1  0.500  0.160  0.684  1.0
  Ge  Ge9  1  0.500  0.840  0.316  1.0
  Au  Au10  1  0.000  0.209  0.002  1.0
  Au  Au11  1  0.000  0.791  0.998  1.0
  Au  Au12  1  0.500  0.291  0.502  1.0
  Au  Au13  1  0.500  0.709  0.498  1.0
  Au  Au14  1  0.000  0.277  0.366  1.0
  Au  Au15  1  0.000  0.723  0.634  1.0
  Au  Au16  1  0.500  0.223  0.866  1.0
  Au  Au17  1  0.500  0.777  0.134  1.0
  Au  Au18  1  0.000  0.263  0.633  1.0
  Au  Au19  1  0.000  0.737  0.367  1.0
  Au  Au20  1  0.500  0.237  0.133  1.0
  Au  Au21  1  0.500  0.763  0.867  1.0
  Au  Au22  1  0.000  0.600  0.159  1.0
  Au  Au23  1  0.000  0.400  0.841  1.0
  Au  Au24  1  0.500  0.900  0.659  1.0
  Au  Au25  1  0.500  0.100  0.341  1.0
  Au  Au26  1  0.500  0.000  0.000  1.0
  Au  Au27  1  0.000  0.500  0.500  1.0
[/CIF]
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