The material described by Y2Ni12Cu5 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 18-coordinate geometry to two equivalent Ni(1), two equivalent Ni(2), two equivalent Ni(3), four equivalent Ni(5), and eight equivalent Ni(4) atoms. In the second Y site, Y(2) is bonded in a 20-coordinate geometry to two equivalent Ni(1), two equivalent Ni(2), two equivalent Ni(3), two equivalent Ni(5), four equivalent Ni(4), two equivalent Cu(1), two equivalent Cu(3), and four equivalent Cu(2) atoms. There are five inequivalent Ni sites. In the first Ni site, Ni(4) is bonded to one Y(2), two equivalent Y(1), one Ni(1), one Ni(3), one Ni(4), one Ni(5), two equivalent Ni(2), one Cu(1), one Cu(2), and one Cu(3) atom to form distorted NiY3Cu3Ni6 cuboctahedra that share  a cornercorner with one Cu(3)Y2Cu2Ni8 cuboctahedra, corners with two equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, corners with three equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, corners with three equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, corners with three equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, corners with four equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, corners with seven equivalent Ni(4)Y3Cu3Ni6 cuboctahedra,  an edgeedge with one Ni(1)Y2Cu4Ni6 cuboctahedra,  an edgeedge with one Ni(3)Y2Cu4Ni6 cuboctahedra,  an edgeedge with one Cu(3)Y2Cu2Ni8 cuboctahedra, edges with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, edges with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, edges with three equivalent Ni(4)Y3Cu3Ni6 cuboctahedra,  a faceface with one Cu(2)Y2Cu2Ni8 cuboctahedra,  a faceface with one Cu(3)Y2Cu2Ni8 cuboctahedra, faces with three equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, faces with three equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, faces with three equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, faces with four equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, and faces with five equivalent Ni(4)Y3Cu3Ni6 cuboctahedra. In the second Ni site, Ni(5) is bonded to one Y(2), two equivalent Y(1), two equivalent Ni(1), two equivalent Ni(3), two equivalent Ni(4), one Cu(1), and two equivalent Cu(2) atoms to form distorted NiY3Cu3Ni6 cuboctahedra that share corners with two equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, corners with two equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, corners with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, corners with three equivalent Cu(3)Y2Cu2Ni8 cuboctahedra, corners with four equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, corners with four equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, corners with six equivalent Ni(4)Y3Cu3Ni6 cuboctahedra,  an edgeedge with one Ni(5)Y3Cu3Ni6 cuboctahedra,  an edgeedge with one Cu(3)Y2Cu2Ni8 cuboctahedra, edges with two equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, edges with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, edges with four equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, faces with two equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, faces with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, faces with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, faces with four equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, faces with four equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, and faces with six equivalent Ni(4)Y3Cu3Ni6 cuboctahedra. In the third Ni site, Ni(1) is bonded to one Y(1), one Y(2), one Ni(1), one Ni(3), two equivalent Ni(4), two equivalent Ni(5), two equivalent Cu(1), and two equivalent Cu(2) atoms to form distorted NiY2Cu4Ni6 cuboctahedra that share corners with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, corners with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, corners with two equivalent Cu(3)Y2Cu2Ni8 cuboctahedra, corners with three equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, corners with four equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, corners with five equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, corners with six equivalent Ni(4)Y3Cu3Ni6 cuboctahedra,  an edgeedge with one Ni(2)Y2Cu4Ni6 cuboctahedra, edges with two equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, edges with two equivalent Cu(3)Y2Cu2Ni8 cuboctahedra,  a faceface with one Ni(1)Y2Cu4Ni6 cuboctahedra, faces with two equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, faces with four equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, faces with four equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, faces with four equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, and faces with six equivalent Ni(4)Y3Cu3Ni6 cuboctahedra. In the fourth Ni site, Ni(2) is bonded to one Y(1), one Y(2), one Ni(2), one Ni(3), four equivalent Ni(4), two equivalent Cu(1), and two equivalent Cu(3) atoms to form distorted NiY2Cu4Ni6 cuboctahedra that share corners with three equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, corners with four equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, corners with four equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, corners with four equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, corners with four equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, corners with five equivalent Ni(3)Y2Cu4Ni6 cuboctahedra,  an edgeedge with one Ni(1)Y2Cu4Ni6 cuboctahedra, edges with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, edges with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, faces with two equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, faces with two equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, faces with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, faces with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, faces with two equivalent Cu(3)Y2Cu2Ni8 cuboctahedra, faces with three equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, and faces with eight equivalent Ni(4)Y3Cu3Ni6 cuboctahedra. In the fifth Ni site, Ni(3) is bonded to one Y(1), one Y(2), one Ni(1), one Ni(2), two equivalent Ni(4), two equivalent Ni(5), two equivalent Cu(1), and two equivalent Cu(2) atoms to form distorted NiY2Cu4Ni6 cuboctahedra that share corners with two equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, corners with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, corners with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, corners with two equivalent Cu(3)Y2Cu2Ni8 cuboctahedra, corners with five equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, corners with five equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, corners with six equivalent Ni(4)Y3Cu3Ni6 cuboctahedra,  an edgeedge with one Ni(3)Y2Cu4Ni6 cuboctahedra, edges with two equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, edges with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra,  a faceface with one Ni(3)Y2Cu4Ni6 cuboctahedra, faces with two equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, faces with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, faces with two equivalent Cu(3)Y2Cu2Ni8 cuboctahedra, faces with four equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, faces with four equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, and faces with six equivalent Ni(4)Y3Cu3Ni6 cuboctahedra. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 14-coordinate geometry to one Y(2), one Ni(5), two equivalent Ni(1), two equivalent Ni(2), two equivalent Ni(3), two equivalent Ni(4), one Cu(1), one Cu(3), and two equivalent Cu(2) atoms. In the second Cu site, Cu(2) is bonded to two equivalent Y(2), two equivalent Ni(1), two equivalent Ni(3), two equivalent Ni(4), two equivalent Ni(5), and two equivalent Cu(1) atoms to form CuY2Cu2Ni8 cuboctahedra that share corners with two equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, corners with two equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, corners with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, corners with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, corners with two equivalent Cu(3)Y2Cu2Ni8 cuboctahedra, corners with four equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, corners with eight equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, edges with two equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, edges with two equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, edges with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, edges with four equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, faces with two equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, faces with two equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, faces with two equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, faces with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, faces with two equivalent Cu(3)Y2Cu2Ni8 cuboctahedra, faces with four equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, and faces with four equivalent Cu(2)Y2Cu2Ni8 cuboctahedra. In the third Cu site, Cu(3) is bonded to two equivalent Y(2), four equivalent Ni(2), four equivalent Ni(4), and two equivalent Cu(1) atoms to form CuY2Cu2Ni8 cuboctahedra that share corners with four equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, corners with four equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, corners with four equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, corners with four equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, corners with six equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, edges with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, edges with four equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, edges with four equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, faces with two equivalent Cu(3)Y2Cu2Ni8 cuboctahedra, faces with four equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, faces with four equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, faces with four equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, and faces with four equivalent Cu(2)Y2Cu2Ni8 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Y2Cu5Ni12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.133
_cell_length_b   8.324
_cell_length_c   8.324
_cell_angle_alpha   119.880
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   488.626
_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
  Y  Y0  1  0.750  1.000  0.000  1.0
  Y  Y1  1  0.250  0.000  1.000  1.0
  Y  Y2  1  0.250  0.666  0.334  1.0
  Y  Y3  1  0.750  0.334  0.666  1.0
  Cu  Cu4  1  0.605  0.667  0.333  1.0
  Cu  Cu5  1  0.395  0.333  0.667  1.0
  Cu  Cu6  1  0.105  0.333  0.667  1.0
  Cu  Cu7  1  0.895  0.667  0.333  1.0
  Cu  Cu8  1  0.500  0.500  0.000  1.0
  Cu  Cu9  1  0.500  0.500  0.500  1.0
  Cu  Cu10  1  0.500  0.000  0.500  1.0
  Cu  Cu11  1  0.000  0.500  0.000  1.0
  Cu  Cu12  1  0.000  0.500  0.500  1.0
  Cu  Cu13  1  0.000  0.000  0.500  1.0
  Ni  Ni14  1  0.750  0.674  0.038  1.0
  Ni  Ni15  1  0.750  0.364  0.326  1.0
  Ni  Ni16  1  0.750  0.962  0.636  1.0
  Ni  Ni17  1  0.750  0.364  0.038  1.0
  Ni  Ni18  1  0.750  0.962  0.326  1.0
  Ni  Ni19  1  0.750  0.674  0.636  1.0
  Ni  Ni20  1  0.250  0.326  0.962  1.0
  Ni  Ni21  1  0.250  0.636  0.674  1.0
  Ni  Ni22  1  0.250  0.038  0.364  1.0
  Ni  Ni23  1  0.250  0.636  0.962  1.0
  Ni  Ni24  1  0.250  0.038  0.674  1.0
  Ni  Ni25  1  0.250  0.326  0.364  1.0
  Ni  Ni26  1  0.482  0.836  0.672  1.0
  Ni  Ni27  1  0.482  0.836  0.164  1.0
  Ni  Ni28  1  0.482  0.328  0.164  1.0
  Ni  Ni29  1  0.518  0.164  0.328  1.0
  Ni  Ni30  1  0.518  0.164  0.836  1.0
  Ni  Ni31  1  0.518  0.672  0.836  1.0
  Ni  Ni32  1  0.982  0.164  0.328  1.0
  Ni  Ni33  1  0.982  0.164  0.836  1.0
  Ni  Ni34  1  0.982  0.672  0.836  1.0
  Ni  Ni35  1  0.018  0.836  0.672  1.0
  Ni  Ni36  1  0.018  0.836  0.164  1.0
  Ni  Ni37  1  0.018  0.328  0.164  1.0
[/CIF]
.
The material described by Y2Ni12Cu5 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 18-coordinate geometry to two equivalent Ni(1), two equivalent Ni(2), two equivalent Ni(3), four equivalent Ni(5), and eight equivalent Ni(4) atoms. In the second Y site, Y(2) is bonded in a 20-coordinate geometry to two equivalent Ni(1), two equivalent Ni(2), two equivalent Ni(3), two equivalent Ni(5), four equivalent Ni(4), two equivalent Cu(1), two equivalent Cu(3), and four equivalent Cu(2) atoms. There are five inequivalent Ni sites. In the first Ni site, Ni(4) is bonded to one Y(2), two equivalent Y(1), one Ni(1), one Ni(3), one Ni(4), one Ni(5), two equivalent Ni(2), one Cu(1), one Cu(2), and one Cu(3) atom to form distorted NiY3Cu3Ni6 cuboctahedra that share  a cornercorner with one Cu(3)Y2Cu2Ni8 cuboctahedra, corners with two equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, corners with three equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, corners with three equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, corners with three equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, corners with four equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, corners with seven equivalent Ni(4)Y3Cu3Ni6 cuboctahedra,  an edgeedge with one Ni(1)Y2Cu4Ni6 cuboctahedra,  an edgeedge with one Ni(3)Y2Cu4Ni6 cuboctahedra,  an edgeedge with one Cu(3)Y2Cu2Ni8 cuboctahedra, edges with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, edges with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, edges with three equivalent Ni(4)Y3Cu3Ni6 cuboctahedra,  a faceface with one Cu(2)Y2Cu2Ni8 cuboctahedra,  a faceface with one Cu(3)Y2Cu2Ni8 cuboctahedra, faces with three equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, faces with three equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, faces with three equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, faces with four equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, and faces with five equivalent Ni(4)Y3Cu3Ni6 cuboctahedra. In the second Ni site, Ni(5) is bonded to one Y(2), two equivalent Y(1), two equivalent Ni(1), two equivalent Ni(3), two equivalent Ni(4), one Cu(1), and two equivalent Cu(2) atoms to form distorted NiY3Cu3Ni6 cuboctahedra that share corners with two equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, corners with two equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, corners with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, corners with three equivalent Cu(3)Y2Cu2Ni8 cuboctahedra, corners with four equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, corners with four equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, corners with six equivalent Ni(4)Y3Cu3Ni6 cuboctahedra,  an edgeedge with one Ni(5)Y3Cu3Ni6 cuboctahedra,  an edgeedge with one Cu(3)Y2Cu2Ni8 cuboctahedra, edges with two equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, edges with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, edges with four equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, faces with two equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, faces with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, faces with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, faces with four equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, faces with four equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, and faces with six equivalent Ni(4)Y3Cu3Ni6 cuboctahedra. In the third Ni site, Ni(1) is bonded to one Y(1), one Y(2), one Ni(1), one Ni(3), two equivalent Ni(4), two equivalent Ni(5), two equivalent Cu(1), and two equivalent Cu(2) atoms to form distorted NiY2Cu4Ni6 cuboctahedra that share corners with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, corners with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, corners with two equivalent Cu(3)Y2Cu2Ni8 cuboctahedra, corners with three equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, corners with four equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, corners with five equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, corners with six equivalent Ni(4)Y3Cu3Ni6 cuboctahedra,  an edgeedge with one Ni(2)Y2Cu4Ni6 cuboctahedra, edges with two equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, edges with two equivalent Cu(3)Y2Cu2Ni8 cuboctahedra,  a faceface with one Ni(1)Y2Cu4Ni6 cuboctahedra, faces with two equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, faces with four equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, faces with four equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, faces with four equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, and faces with six equivalent Ni(4)Y3Cu3Ni6 cuboctahedra. In the fourth Ni site, Ni(2) is bonded to one Y(1), one Y(2), one Ni(2), one Ni(3), four equivalent Ni(4), two equivalent Cu(1), and two equivalent Cu(3) atoms to form distorted NiY2Cu4Ni6 cuboctahedra that share corners with three equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, corners with four equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, corners with four equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, corners with four equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, corners with four equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, corners with five equivalent Ni(3)Y2Cu4Ni6 cuboctahedra,  an edgeedge with one Ni(1)Y2Cu4Ni6 cuboctahedra, edges with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, edges with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, faces with two equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, faces with two equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, faces with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, faces with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, faces with two equivalent Cu(3)Y2Cu2Ni8 cuboctahedra, faces with three equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, and faces with eight equivalent Ni(4)Y3Cu3Ni6 cuboctahedra. In the fifth Ni site, Ni(3) is bonded to one Y(1), one Y(2), one Ni(1), one Ni(2), two equivalent Ni(4), two equivalent Ni(5), two equivalent Cu(1), and two equivalent Cu(2) atoms to form distorted NiY2Cu4Ni6 cuboctahedra that share corners with two equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, corners with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, corners with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, corners with two equivalent Cu(3)Y2Cu2Ni8 cuboctahedra, corners with five equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, corners with five equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, corners with six equivalent Ni(4)Y3Cu3Ni6 cuboctahedra,  an edgeedge with one Ni(3)Y2Cu4Ni6 cuboctahedra, edges with two equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, edges with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra,  a faceface with one Ni(3)Y2Cu4Ni6 cuboctahedra, faces with two equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, faces with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, faces with two equivalent Cu(3)Y2Cu2Ni8 cuboctahedra, faces with four equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, faces with four equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, and faces with six equivalent Ni(4)Y3Cu3Ni6 cuboctahedra. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 14-coordinate geometry to one Y(2), one Ni(5), two equivalent Ni(1), two equivalent Ni(2), two equivalent Ni(3), two equivalent Ni(4), one Cu(1), one Cu(3), and two equivalent Cu(2) atoms. In the second Cu site, Cu(2) is bonded to two equivalent Y(2), two equivalent Ni(1), two equivalent Ni(3), two equivalent Ni(4), two equivalent Ni(5), and two equivalent Cu(1) atoms to form CuY2Cu2Ni8 cuboctahedra that share corners with two equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, corners with two equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, corners with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, corners with two equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, corners with two equivalent Cu(3)Y2Cu2Ni8 cuboctahedra, corners with four equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, corners with eight equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, edges with two equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, edges with two equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, edges with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, edges with four equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, faces with two equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, faces with two equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, faces with two equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, faces with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, faces with two equivalent Cu(3)Y2Cu2Ni8 cuboctahedra, faces with four equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, and faces with four equivalent Cu(2)Y2Cu2Ni8 cuboctahedra. In the third Cu site, Cu(3) is bonded to two equivalent Y(2), four equivalent Ni(2), four equivalent Ni(4), and two equivalent Cu(1) atoms to form CuY2Cu2Ni8 cuboctahedra that share corners with four equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, corners with four equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, corners with four equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, corners with four equivalent Cu(2)Y2Cu2Ni8 cuboctahedra, corners with six equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, edges with two equivalent Ni(5)Y3Cu3Ni6 cuboctahedra, edges with four equivalent Ni(1)Y2Cu4Ni6 cuboctahedra, edges with four equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, faces with two equivalent Cu(3)Y2Cu2Ni8 cuboctahedra, faces with four equivalent Ni(2)Y2Cu4Ni6 cuboctahedra, faces with four equivalent Ni(3)Y2Cu4Ni6 cuboctahedra, faces with four equivalent Ni(4)Y3Cu3Ni6 cuboctahedra, and faces with four equivalent Cu(2)Y2Cu2Ni8 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Y2Cu5Ni12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.133
_cell_length_b   8.324
_cell_length_c   8.324
_cell_angle_alpha   119.880
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   488.626
_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
  Y  Y0  1  0.750  1.000  0.000  1.0
  Y  Y1  1  0.250  0.000  1.000  1.0
  Y  Y2  1  0.250  0.666  0.334  1.0
  Y  Y3  1  0.750  0.334  0.666  1.0
  Cu  Cu4  1  0.605  0.667  0.333  1.0
  Cu  Cu5  1  0.395  0.333  0.667  1.0
  Cu  Cu6  1  0.105  0.333  0.667  1.0
  Cu  Cu7  1  0.895  0.667  0.333  1.0
  Cu  Cu8  1  0.500  0.500  0.000  1.0
  Cu  Cu9  1  0.500  0.500  0.500  1.0
  Cu  Cu10  1  0.500  0.000  0.500  1.0
  Cu  Cu11  1  0.000  0.500  0.000  1.0
  Cu  Cu12  1  0.000  0.500  0.500  1.0
  Cu  Cu13  1  0.000  0.000  0.500  1.0
  Ni  Ni14  1  0.750  0.674  0.038  1.0
  Ni  Ni15  1  0.750  0.364  0.326  1.0
  Ni  Ni16  1  0.750  0.962  0.636  1.0
  Ni  Ni17  1  0.750  0.364  0.038  1.0
  Ni  Ni18  1  0.750  0.962  0.326  1.0
  Ni  Ni19  1  0.750  0.674  0.636  1.0
  Ni  Ni20  1  0.250  0.326  0.962  1.0
  Ni  Ni21  1  0.250  0.636  0.674  1.0
  Ni  Ni22  1  0.250  0.038  0.364  1.0
  Ni  Ni23  1  0.250  0.636  0.962  1.0
  Ni  Ni24  1  0.250  0.038  0.674  1.0
  Ni  Ni25  1  0.250  0.326  0.364  1.0
  Ni  Ni26  1  0.482  0.836  0.672  1.0
  Ni  Ni27  1  0.482  0.836  0.164  1.0
  Ni  Ni28  1  0.482  0.328  0.164  1.0
  Ni  Ni29  1  0.518  0.164  0.328  1.0
  Ni  Ni30  1  0.518  0.164  0.836  1.0
  Ni  Ni31  1  0.518  0.672  0.836  1.0
  Ni  Ni32  1  0.982  0.164  0.328  1.0
  Ni  Ni33  1  0.982  0.164  0.836  1.0
  Ni  Ni34  1  0.982  0.672  0.836  1.0
  Ni  Ni35  1  0.018  0.836  0.672  1.0
  Ni  Ni36  1  0.018  0.836  0.164  1.0
  Ni  Ni37  1  0.018  0.328  0.164  1.0
[/CIF]
.