The structure described by Ca5Ni17Ge8 crystallizes in the orthorhombic Amm2 space group. There are three inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 16-coordinate geometry to one Ni(2), one Ni(3), one Ni(9), two equivalent Ni(4), two equivalent Ni(7), two equivalent Ni(8), one Ge(1), one Ge(2), one Ge(4), two equivalent Ge(3), and two equivalent Ge(5) atoms. In the second Ca site, Ca(2) is bonded in a 16-coordinate geometry to one Ni(4), one Ni(5), two equivalent Ni(1), two equivalent Ni(2), two equivalent Ni(6), two equivalent Ni(7), two equivalent Ge(1), and four equivalent Ge(2) atoms. In the third Ca site, Ca(3) is bonded in a 18-coordinate geometry to two equivalent Ni(4), two equivalent Ni(5), two equivalent Ni(8), two equivalent Ni(9), four equivalent Ni(3), two equivalent Ge(4), and four equivalent Ge(1) atoms. There are nine inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 10-coordinate geometry to two equivalent Ca(2), one Ni(2), one Ni(3), two equivalent Ni(5), two equivalent Ni(6), one Ge(1), and one Ge(2) atom. In the second Ni site, Ni(2) is bonded in a 12-coordinate geometry to one Ca(1), two equivalent Ca(2), one Ni(1), two equivalent Ni(6), two equivalent Ni(7), two equivalent Ge(2), and two equivalent Ge(3) atoms. In the third Ni site, Ni(3) is bonded in a 12-coordinate geometry to one Ca(1), two equivalent Ca(3), one Ni(1), two equivalent Ni(5), two equivalent Ni(8), one Ge(1), one Ge(4), and two equivalent Ge(3) atoms. In the fourth Ni site, Ni(4) is bonded in a 10-coordinate geometry to one Ca(2), one Ca(3), two equivalent Ca(1), one Ni(5), two equivalent Ni(9), one Ge(5), and two equivalent Ge(1) atoms. In the fifth Ni site, Ni(5) is bonded in a 11-coordinate geometry to one Ca(2), one Ca(3), one Ni(4), one Ni(6), two equivalent Ni(1), two equivalent Ni(3), one Ge(3), and two equivalent Ge(1) atoms. In the sixth Ni site, Ni(6) is bonded in a 5-coordinate geometry to two equivalent Ca(2), one Ni(5), one Ni(7), two equivalent Ni(1), two equivalent Ni(2), one Ge(3), and two equivalent Ge(2) atoms. In the seventh Ni site, Ni(7) is bonded in a 10-coordinate geometry to two equivalent Ca(1), two equivalent Ca(2), one Ni(6), two equivalent Ni(2), one Ge(3), and two equivalent Ge(2) atoms. In the eighth Ni site, Ni(8) is bonded in a 10-coordinate geometry to one Ca(3), two equivalent Ca(1), one Ni(8), two equivalent Ni(3), one Ge(3), one Ge(5), and two equivalent Ge(4) atoms. In the ninth Ni site, Ni(9) is bonded to two equivalent Ca(1), two equivalent Ca(3), four equivalent Ni(4), two equivalent Ge(1), and two equivalent Ge(5) atoms to form distorted face-sharing NiCa4Ni4Ge4 cuboctahedra. There are five inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 12-coordinate geometry to one Ca(1), two equivalent Ca(2), two equivalent Ca(3), one Ni(1), one Ni(3), one Ni(9), two equivalent Ni(4), and two equivalent Ni(5) atoms. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to one Ca(1), four equivalent Ca(2), one Ni(1), two equivalent Ni(2), two equivalent Ni(6), and two equivalent Ni(7) atoms. In the third Ge site, Ge(3) is bonded in a 10-coordinate geometry to two equivalent Ca(1), one Ni(5), one Ni(6), one Ni(7), one Ni(8), two equivalent Ni(2), and two equivalent Ni(3) atoms. In the fourth Ge site, Ge(4) is bonded in a 10-coordinate geometry to two equivalent Ca(1), two equivalent Ca(3), two equivalent Ni(3), and four equivalent Ni(8) atoms. In the fifth Ge site, Ge(5) is bonded in a 6-coordinate geometry to four equivalent Ca(1), two equivalent Ni(4), two equivalent Ni(8), and two equivalent Ni(9) atoms. is represented by the CIF card [CIF]
data_Ca5Ni17Ge8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.343
_cell_length_b   13.343
_cell_length_c   4.031
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   140.622
_symmetry_Int_Tables_number   1
_cell_volume   455.352
_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
  Ca  Ca0  1  0.818  0.608  0.000  1.0
  Ca  Ca1  1  0.608  0.818  0.000  1.0
  Ca  Ca2  1  0.179  0.791  0.500  1.0
  Ca  Ca3  1  0.791  0.179  0.500  1.0
  Ca  Ca4  1  0.219  0.219  0.500  1.0
  Ni  Ni5  1  0.382  0.050  0.000  1.0
  Ni  Ni6  1  0.050  0.382  0.000  1.0
  Ni  Ni7  1  0.673  0.275  0.000  1.0
  Ni  Ni8  1  0.275  0.673  0.000  1.0
  Ni  Ni9  1  0.451  0.282  0.000  1.0
  Ni  Ni10  1  0.282  0.451  0.000  1.0
  Ni  Ni11  1  0.012  0.884  0.500  1.0
  Ni  Ni12  1  0.884  0.012  0.500  1.0
  Ni  Ni13  1  0.311  0.088  0.500  1.0
  Ni  Ni14  1  0.088  0.311  0.500  1.0
  Ni  Ni15  1  0.516  0.087  0.500  1.0
  Ni  Ni16  1  0.087  0.516  0.500  1.0
  Ni  Ni17  1  0.845  0.443  0.500  1.0
  Ni  Ni18  1  0.443  0.845  0.500  1.0
  Ni  Ni19  1  0.572  0.474  0.500  1.0
  Ni  Ni20  1  0.474  0.572  0.500  1.0
  Ni  Ni21  1  0.927  0.927  0.000  1.0
  Ge  Ge22  1  0.156  0.987  0.000  1.0
  Ge  Ge23  1  0.987  0.156  0.000  1.0
  Ge  Ge24  1  0.482  0.961  0.000  1.0
  Ge  Ge25  1  0.961  0.482  0.000  1.0
  Ge  Ge26  1  0.590  0.315  0.500  1.0
  Ge  Ge27  1  0.315  0.590  0.500  1.0
  Ge  Ge28  1  0.482  0.482  0.000  1.0
  Ge  Ge29  1  0.758  0.758  0.500  1.0
[/CIF]
.
The structure described by Ca5Ni17Ge8 crystallizes in the orthorhombic Amm2 space group. There are three inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 16-coordinate geometry to one Ni(2), one Ni(3), one Ni(9), two equivalent Ni(4), two equivalent Ni(7), two equivalent Ni(8), one Ge(1), one Ge(2), one Ge(4), two equivalent Ge(3), and two equivalent Ge(5) atoms. In the second Ca site, Ca(2) is bonded in a 16-coordinate geometry to one Ni(4), one Ni(5), two equivalent Ni(1), two equivalent Ni(2), two equivalent Ni(6), two equivalent Ni(7), two equivalent Ge(1), and four equivalent Ge(2) atoms. In the third Ca site, Ca(3) is bonded in a 18-coordinate geometry to two equivalent Ni(4), two equivalent Ni(5), two equivalent Ni(8), two equivalent Ni(9), four equivalent Ni(3), two equivalent Ge(4), and four equivalent Ge(1) atoms. There are nine inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 10-coordinate geometry to two equivalent Ca(2), one Ni(2), one Ni(3), two equivalent Ni(5), two equivalent Ni(6), one Ge(1), and one Ge(2) atom. In the second Ni site, Ni(2) is bonded in a 12-coordinate geometry to one Ca(1), two equivalent Ca(2), one Ni(1), two equivalent Ni(6), two equivalent Ni(7), two equivalent Ge(2), and two equivalent Ge(3) atoms. In the third Ni site, Ni(3) is bonded in a 12-coordinate geometry to one Ca(1), two equivalent Ca(3), one Ni(1), two equivalent Ni(5), two equivalent Ni(8), one Ge(1), one Ge(4), and two equivalent Ge(3) atoms. In the fourth Ni site, Ni(4) is bonded in a 10-coordinate geometry to one Ca(2), one Ca(3), two equivalent Ca(1), one Ni(5), two equivalent Ni(9), one Ge(5), and two equivalent Ge(1) atoms. In the fifth Ni site, Ni(5) is bonded in a 11-coordinate geometry to one Ca(2), one Ca(3), one Ni(4), one Ni(6), two equivalent Ni(1), two equivalent Ni(3), one Ge(3), and two equivalent Ge(1) atoms. In the sixth Ni site, Ni(6) is bonded in a 5-coordinate geometry to two equivalent Ca(2), one Ni(5), one Ni(7), two equivalent Ni(1), two equivalent Ni(2), one Ge(3), and two equivalent Ge(2) atoms. In the seventh Ni site, Ni(7) is bonded in a 10-coordinate geometry to two equivalent Ca(1), two equivalent Ca(2), one Ni(6), two equivalent Ni(2), one Ge(3), and two equivalent Ge(2) atoms. In the eighth Ni site, Ni(8) is bonded in a 10-coordinate geometry to one Ca(3), two equivalent Ca(1), one Ni(8), two equivalent Ni(3), one Ge(3), one Ge(5), and two equivalent Ge(4) atoms. In the ninth Ni site, Ni(9) is bonded to two equivalent Ca(1), two equivalent Ca(3), four equivalent Ni(4), two equivalent Ge(1), and two equivalent Ge(5) atoms to form distorted face-sharing NiCa4Ni4Ge4 cuboctahedra. There are five inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 12-coordinate geometry to one Ca(1), two equivalent Ca(2), two equivalent Ca(3), one Ni(1), one Ni(3), one Ni(9), two equivalent Ni(4), and two equivalent Ni(5) atoms. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to one Ca(1), four equivalent Ca(2), one Ni(1), two equivalent Ni(2), two equivalent Ni(6), and two equivalent Ni(7) atoms. In the third Ge site, Ge(3) is bonded in a 10-coordinate geometry to two equivalent Ca(1), one Ni(5), one Ni(6), one Ni(7), one Ni(8), two equivalent Ni(2), and two equivalent Ni(3) atoms. In the fourth Ge site, Ge(4) is bonded in a 10-coordinate geometry to two equivalent Ca(1), two equivalent Ca(3), two equivalent Ni(3), and four equivalent Ni(8) atoms. In the fifth Ge site, Ge(5) is bonded in a 6-coordinate geometry to four equivalent Ca(1), two equivalent Ni(4), two equivalent Ni(8), and two equivalent Ni(9) atoms. is represented by the CIF card [CIF]
data_Ca5Ni17Ge8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.343
_cell_length_b   13.343
_cell_length_c   4.031
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   140.622
_symmetry_Int_Tables_number   1
_cell_volume   455.352
_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
  Ca  Ca0  1  0.818  0.608  0.000  1.0
  Ca  Ca1  1  0.608  0.818  0.000  1.0
  Ca  Ca2  1  0.179  0.791  0.500  1.0
  Ca  Ca3  1  0.791  0.179  0.500  1.0
  Ca  Ca4  1  0.219  0.219  0.500  1.0
  Ni  Ni5  1  0.382  0.050  0.000  1.0
  Ni  Ni6  1  0.050  0.382  0.000  1.0
  Ni  Ni7  1  0.673  0.275  0.000  1.0
  Ni  Ni8  1  0.275  0.673  0.000  1.0
  Ni  Ni9  1  0.451  0.282  0.000  1.0
  Ni  Ni10  1  0.282  0.451  0.000  1.0
  Ni  Ni11  1  0.012  0.884  0.500  1.0
  Ni  Ni12  1  0.884  0.012  0.500  1.0
  Ni  Ni13  1  0.311  0.088  0.500  1.0
  Ni  Ni14  1  0.088  0.311  0.500  1.0
  Ni  Ni15  1  0.516  0.087  0.500  1.0
  Ni  Ni16  1  0.087  0.516  0.500  1.0
  Ni  Ni17  1  0.845  0.443  0.500  1.0
  Ni  Ni18  1  0.443  0.845  0.500  1.0
  Ni  Ni19  1  0.572  0.474  0.500  1.0
  Ni  Ni20  1  0.474  0.572  0.500  1.0
  Ni  Ni21  1  0.927  0.927  0.000  1.0
  Ge  Ge22  1  0.156  0.987  0.000  1.0
  Ge  Ge23  1  0.987  0.156  0.000  1.0
  Ge  Ge24  1  0.482  0.961  0.000  1.0
  Ge  Ge25  1  0.961  0.482  0.000  1.0
  Ge  Ge26  1  0.590  0.315  0.500  1.0
  Ge  Ge27  1  0.315  0.590  0.500  1.0
  Ge  Ge28  1  0.482  0.482  0.000  1.0
  Ge  Ge29  1  0.758  0.758  0.500  1.0
[/CIF]
.