The compound described by KMg14Ni crystallizes in the orthorhombic Amm2 space group. K(1) is bonded to two equivalent Mg(7), four equivalent Mg(3), four equivalent Mg(5), and two equivalent Ni(1) atoms to form KMg10Ni2 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra, corners with six equivalent K(1)Mg10Ni2 cuboctahedra, corners with eight equivalent Mg(4)Mg12 cuboctahedra, and faces with two equivalent Mg(2)Mg12 cuboctahedra. There are seven inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(2), two equivalent Mg(6), four equivalent Mg(4), and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent K(1)Mg10Ni2 cuboctahedra, corners with six equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(2)Mg12 cuboctahedra, and faces with four equivalent Mg(4)Mg12 cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(1), two equivalent Mg(7), four equivalent Mg(4), and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with six equivalent Mg(2)Mg12 cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent K(1)Mg10Ni2 cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, and faces with four equivalent Mg(4)Mg12 cuboctahedra. In the third Mg site, Mg(3) is bonded in a 1-coordinate geometry to two equivalent K(1), two equivalent Mg(5), two equivalent Mg(7), and one Ni(1) atom. In the fourth Mg site, Mg(4) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(5), two equivalent Mg(6), and two equivalent Mg(7) atoms to form distorted MgMg12 cuboctahedra that share corners with four equivalent K(1)Mg10Ni2 cuboctahedra, corners with six equivalent Mg(4)Mg12 cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with two equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, faces with two equivalent Mg(2)Mg12 cuboctahedra, and faces with two equivalent Mg(4)Mg12 cuboctahedra. In the fifth Mg site, Mg(5) is bonded in a 12-coordinate geometry to one K(1), one Mg(1), one Mg(2), one Mg(3), one Mg(4), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and one Ni(1) atom. In the sixth Mg site, Mg(6) is bonded in a distorted single-bond geometry to one Mg(1), two equivalent Mg(4), two equivalent Mg(7), four equivalent Mg(5), and one Ni(1) atom. In the seventh Mg site, Mg(7) is bonded in a 12-coordinate geometry to one K(1), one Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(6), and four equivalent Mg(5) atoms. Ni(1) is bonded in a 10-coordinate geometry to two equivalent K(1), two equivalent Mg(3), two equivalent Mg(6), and four equivalent Mg(5) atoms. is represented by the CIF card [CIF]
data_KMg14Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.498
_cell_length_b   6.347
_cell_length_c   10.325
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.237
_symmetry_Int_Tables_number   1
_cell_volume   371.584
_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
  K  K0  1  0.127  0.813  0.125  1.0
  Mg  Mg1  1  0.165  0.332  0.625  1.0
  Mg  Mg2  1  0.173  0.836  0.625  1.0
  Mg  Mg3  1  0.622  0.321  0.125  1.0
  Mg  Mg4  1  0.666  0.326  0.625  1.0
  Mg  Mg5  1  0.622  0.800  0.125  1.0
  Mg  Mg6  1  0.666  0.839  0.625  1.0
  Mg  Mg7  1  0.340  0.179  0.378  1.0
  Mg  Mg8  1  0.340  0.179  0.872  1.0
  Mg  Mg9  1  0.340  0.661  0.378  1.0
  Mg  Mg10  1  0.340  0.661  0.872  1.0
  Mg  Mg11  1  0.860  0.180  0.347  1.0
  Mg  Mg12  1  0.860  0.180  0.903  1.0
  Mg  Mg13  1  0.828  0.664  0.395  1.0
  Mg  Mg14  1  0.828  0.664  0.855  1.0
  Ni  Ni15  1  0.225  0.362  0.125  1.0
[/CIF]
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The compound described by KMg14Ni crystallizes in the orthorhombic Amm2 space group. K(1) is bonded to two equivalent Mg(7), four equivalent Mg(3), four equivalent Mg(5), and two equivalent Ni(1) atoms to form KMg10Ni2 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra, corners with six equivalent K(1)Mg10Ni2 cuboctahedra, corners with eight equivalent Mg(4)Mg12 cuboctahedra, and faces with two equivalent Mg(2)Mg12 cuboctahedra. There are seven inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(2), two equivalent Mg(6), four equivalent Mg(4), and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent K(1)Mg10Ni2 cuboctahedra, corners with six equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(2)Mg12 cuboctahedra, and faces with four equivalent Mg(4)Mg12 cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(1), two equivalent Mg(7), four equivalent Mg(4), and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with six equivalent Mg(2)Mg12 cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent K(1)Mg10Ni2 cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, and faces with four equivalent Mg(4)Mg12 cuboctahedra. In the third Mg site, Mg(3) is bonded in a 1-coordinate geometry to two equivalent K(1), two equivalent Mg(5), two equivalent Mg(7), and one Ni(1) atom. In the fourth Mg site, Mg(4) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(5), two equivalent Mg(6), and two equivalent Mg(7) atoms to form distorted MgMg12 cuboctahedra that share corners with four equivalent K(1)Mg10Ni2 cuboctahedra, corners with six equivalent Mg(4)Mg12 cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with two equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, faces with two equivalent Mg(2)Mg12 cuboctahedra, and faces with two equivalent Mg(4)Mg12 cuboctahedra. In the fifth Mg site, Mg(5) is bonded in a 12-coordinate geometry to one K(1), one Mg(1), one Mg(2), one Mg(3), one Mg(4), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and one Ni(1) atom. In the sixth Mg site, Mg(6) is bonded in a distorted single-bond geometry to one Mg(1), two equivalent Mg(4), two equivalent Mg(7), four equivalent Mg(5), and one Ni(1) atom. In the seventh Mg site, Mg(7) is bonded in a 12-coordinate geometry to one K(1), one Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(6), and four equivalent Mg(5) atoms. Ni(1) is bonded in a 10-coordinate geometry to two equivalent K(1), two equivalent Mg(3), two equivalent Mg(6), and four equivalent Mg(5) atoms. is represented by the CIF card [CIF]
data_KMg14Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.498
_cell_length_b   6.347
_cell_length_c   10.325
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.237
_symmetry_Int_Tables_number   1
_cell_volume   371.584
_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
  K  K0  1  0.127  0.813  0.125  1.0
  Mg  Mg1  1  0.165  0.332  0.625  1.0
  Mg  Mg2  1  0.173  0.836  0.625  1.0
  Mg  Mg3  1  0.622  0.321  0.125  1.0
  Mg  Mg4  1  0.666  0.326  0.625  1.0
  Mg  Mg5  1  0.622  0.800  0.125  1.0
  Mg  Mg6  1  0.666  0.839  0.625  1.0
  Mg  Mg7  1  0.340  0.179  0.378  1.0
  Mg  Mg8  1  0.340  0.179  0.872  1.0
  Mg  Mg9  1  0.340  0.661  0.378  1.0
  Mg  Mg10  1  0.340  0.661  0.872  1.0
  Mg  Mg11  1  0.860  0.180  0.347  1.0
  Mg  Mg12  1  0.860  0.180  0.903  1.0
  Mg  Mg13  1  0.828  0.664  0.395  1.0
  Mg  Mg14  1  0.828  0.664  0.855  1.0
  Ni  Ni15  1  0.225  0.362  0.125  1.0
[/CIF]
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