The compound described by AlGeNi4 crystallizes in the orthorhombic Pmc2_1 space group. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 3-coordinate geometry to four equivalent Ni(4), one Al(1), and four equivalent Ge(1) atoms. In the second Ni site, Ni(2) is bonded in a 5-coordinate geometry to one Ni(4), four equivalent Al(1), and one Ge(1) atom. In the third Ni site, Ni(3) is bonded in a 5-coordinate geometry to two equivalent Ni(4), three equivalent Al(1), and two equivalent Ge(1) atoms. In the fourth Ni site, Ni(4) is bonded in a 12-coordinate geometry to one Ni(2), two equivalent Ni(3), four equivalent Ni(1), two equivalent Al(1), and three equivalent Ge(1) atoms. Al(1) is bonded in a 10-coordinate geometry to one Ni(1), two equivalent Ni(4), three equivalent Ni(3), and four equivalent Ni(2) atoms. Ge(1) is bonded in a 10-coordinate geometry to one Ni(2), two equivalent Ni(3), three equivalent Ni(4), and four equivalent Ni(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_AlNi4Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.768
_cell_length_b   4.955
_cell_length_c   7.277
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   135.862
_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
  Al  Al0  1  0.750  0.812  0.890  1.0
  Al  Al1  1  0.750  0.312  0.610  1.0
  Ni  Ni2  1  0.750  0.446  0.281  1.0
  Ni  Ni3  1  0.750  0.946  0.219  1.0
  Ni  Ni4  1  0.250  0.566  0.729  1.0
  Ni  Ni5  1  0.250  0.066  0.771  1.0
  Ni  Ni6  1  0.750  0.334  0.938  1.0
  Ni  Ni7  1  0.750  0.834  0.562  1.0
  Ni  Ni8  1  0.250  0.661  0.071  1.0
  Ni  Ni9  1  0.250  0.161  0.429  1.0
  Ge  Ge10  1  0.250  0.182  0.100  1.0
  Ge  Ge11  1  0.250  0.682  0.400  1.0
[/CIF]
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The compound described by AlGeNi4 crystallizes in the orthorhombic Pmc2_1 space group. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 3-coordinate geometry to four equivalent Ni(4), one Al(1), and four equivalent Ge(1) atoms. In the second Ni site, Ni(2) is bonded in a 5-coordinate geometry to one Ni(4), four equivalent Al(1), and one Ge(1) atom. In the third Ni site, Ni(3) is bonded in a 5-coordinate geometry to two equivalent Ni(4), three equivalent Al(1), and two equivalent Ge(1) atoms. In the fourth Ni site, Ni(4) is bonded in a 12-coordinate geometry to one Ni(2), two equivalent Ni(3), four equivalent Ni(1), two equivalent Al(1), and three equivalent Ge(1) atoms. Al(1) is bonded in a 10-coordinate geometry to one Ni(1), two equivalent Ni(4), three equivalent Ni(3), and four equivalent Ni(2) atoms. Ge(1) is bonded in a 10-coordinate geometry to one Ni(2), two equivalent Ni(3), three equivalent Ni(4), and four equivalent Ni(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_AlNi4Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.768
_cell_length_b   4.955
_cell_length_c   7.277
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   135.862
_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
  Al  Al0  1  0.750  0.812  0.890  1.0
  Al  Al1  1  0.750  0.312  0.610  1.0
  Ni  Ni2  1  0.750  0.446  0.281  1.0
  Ni  Ni3  1  0.750  0.946  0.219  1.0
  Ni  Ni4  1  0.250  0.566  0.729  1.0
  Ni  Ni5  1  0.250  0.066  0.771  1.0
  Ni  Ni6  1  0.750  0.334  0.938  1.0
  Ni  Ni7  1  0.750  0.834  0.562  1.0
  Ni  Ni8  1  0.250  0.661  0.071  1.0
  Ni  Ni9  1  0.250  0.161  0.429  1.0
  Ge  Ge10  1  0.250  0.182  0.100  1.0
  Ge  Ge11  1  0.250  0.682  0.400  1.0
[/CIF]
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