The structure described by TiCoNi2 is beta Cu3Ti-derived structured and crystallizes in the orthorhombic Amm2 space group. There are three inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to two equivalent Co(1), four equivalent Co(2), two equivalent Ni(3), and four equivalent Ni(2) atoms to form TiCo6Ni6 cuboctahedra that share corners with six equivalent Ti(2)Co2Ni10 cuboctahedra, corners with six equivalent Ti(1)Co6Ni6 cuboctahedra, edges with two equivalent Co(1)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(3)Ti4Ni8 cuboctahedra, edges with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, edges with eight equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, faces with two equivalent Co(1)Ti4Co4Ni4 cuboctahedra, faces with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, faces with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, faces with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, and faces with six equivalent Ti(3)Co4Ni8 cuboctahedra. In the second Ti site, Ti(2) is bonded to two equivalent Co(3), two equivalent Ni(3), four equivalent Ni(1), and four equivalent Ni(2) atoms to form TiCo2Ni10 cuboctahedra that share corners with six equivalent Ti(2)Co2Ni10 cuboctahedra, corners with six equivalent Ti(1)Co6Ni6 cuboctahedra, edges with two equivalent Co(1)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(3)Ti4Ni8 cuboctahedra, edges with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, edges with eight equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, faces with two equivalent Co(3)Ti4Ni8 cuboctahedra, faces with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, faces with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, faces with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, and faces with six equivalent Ti(3)Co4Ni8 cuboctahedra. In the third Ti site, Ti(3) is bonded to one Co(1), one Co(3), two equivalent Co(2), two equivalent Ni(1), two equivalent Ni(3), and four equivalent Ni(2) atoms to form TiCo4Ni8 cuboctahedra that share corners with four equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, corners with six equivalent Ti(3)Co4Ni8 cuboctahedra, corners with eight equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, edges with two equivalent Co(1)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(3)Ti4Ni8 cuboctahedra, edges with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra,  a faceface with one Co(1)Ti4Co4Ni4 cuboctahedra,  a faceface with one Co(3)Ti4Ni8 cuboctahedra, faces with two equivalent Ti(3)Co4Ni8 cuboctahedra, faces with two equivalent Co(2)Ti4Co4Ni4 cuboctahedra, faces with two equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, faces with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, faces with three equivalent Ti(2)Co2Ni10 cuboctahedra, faces with three equivalent Ti(1)Co6Ni6 cuboctahedra, and faces with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent Ti(1), two equivalent Ti(3), four equivalent Co(2), and four equivalent Ni(2) atoms to form distorted CoTi4Co4Ni4 cuboctahedra that share corners with six equivalent Co(1)Ti4Co4Ni4 cuboctahedra, corners with six equivalent Co(3)Ti4Ni8 cuboctahedra, edges with two equivalent Ti(2)Co2Ni10 cuboctahedra, edges with two equivalent Ti(1)Co6Ni6 cuboctahedra, edges with four equivalent Ti(3)Co4Ni8 cuboctahedra, edges with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with eight equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, faces with two equivalent Ti(3)Co4Ni8 cuboctahedra, faces with two equivalent Ti(1)Co6Ni6 cuboctahedra, faces with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, faces with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, and faces with six equivalent Ni(3)Ti4Co2Ni6 cuboctahedra. In the second Co site, Co(2) is bonded to two equivalent Ti(1), two equivalent Ti(3), two equivalent Co(1), two equivalent Co(2), two equivalent Ni(2), and two equivalent Ni(3) atoms to form distorted CoTi4Co4Ni4 cuboctahedra that share corners with six equivalent Co(2)Ti4Co4Ni4 cuboctahedra, corners with six equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with two equivalent Ti(2)Co2Ni10 cuboctahedra, edges with two equivalent Ti(1)Co6Ni6 cuboctahedra, edges with two equivalent Co(1)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(3)Ti4Ni8 cuboctahedra, edges with two equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Ti(3)Co4Ni8 cuboctahedra, edges with four equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, faces with two equivalent Ti(3)Co4Ni8 cuboctahedra, faces with two equivalent Ti(1)Co6Ni6 cuboctahedra, faces with two equivalent Co(1)Ti4Co4Ni4 cuboctahedra, faces with two equivalent Co(2)Ti4Co4Ni4 cuboctahedra, faces with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, and faces with eight equivalent Ni(2)Ti4Co3Ni5 cuboctahedra. In the third Co site, Co(3) is bonded to two equivalent Ti(2), two equivalent Ti(3), four equivalent Ni(1), and four equivalent Ni(2) atoms to form CoTi4Ni8 cuboctahedra that share corners with six equivalent Co(1)Ti4Co4Ni4 cuboctahedra, corners with six equivalent Co(3)Ti4Ni8 cuboctahedra, edges with two equivalent Ti(2)Co2Ni10 cuboctahedra, edges with two equivalent Ti(1)Co6Ni6 cuboctahedra, edges with four equivalent Ti(3)Co4Ni8 cuboctahedra, edges with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with eight equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, faces with two equivalent Ti(2)Co2Ni10 cuboctahedra, faces with two equivalent Ti(3)Co4Ni8 cuboctahedra, faces with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, faces with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, and faces with six equivalent Ni(3)Ti4Co2Ni6 cuboctahedra. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent Ti(2), two equivalent Ti(3), two equivalent Co(3), two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(3) atoms to form distorted NiTi4Co2Ni6 cuboctahedra that share corners with six equivalent Co(2)Ti4Co4Ni4 cuboctahedra, corners with six equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with two equivalent Ti(2)Co2Ni10 cuboctahedra, edges with two equivalent Ti(1)Co6Ni6 cuboctahedra, edges with two equivalent Co(1)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(3)Ti4Ni8 cuboctahedra, edges with two equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Ti(3)Co4Ni8 cuboctahedra, edges with four equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, faces with two equivalent Ti(2)Co2Ni10 cuboctahedra, faces with two equivalent Ti(3)Co4Ni8 cuboctahedra, faces with two equivalent Co(3)Ti4Ni8 cuboctahedra, faces with two equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, faces with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, and faces with eight equivalent Ni(2)Ti4Co3Ni5 cuboctahedra. In the second Ni site, Ni(2) is bonded to one Ti(1), one Ti(2), two equivalent Ti(3), one Co(1), one Co(2), one Co(3), one Ni(1), two equivalent Ni(2), and two equivalent Ni(3) atoms to form distorted NiTi4Co3Ni5 cuboctahedra that share corners with four equivalent Ti(3)Co4Ni8 cuboctahedra, corners with four equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, corners with ten equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, edges with two equivalent Ti(2)Co2Ni10 cuboctahedra, edges with two equivalent Ti(3)Co4Ni8 cuboctahedra, edges with two equivalent Ti(1)Co6Ni6 cuboctahedra, edges with two equivalent Co(1)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(3)Ti4Ni8 cuboctahedra, edges with two equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, edges with two equivalent Ni(2)Ti4Co3Ni5 cuboctahedra,  a faceface with one Ti(2)Co2Ni10 cuboctahedra,  a faceface with one Ti(1)Co6Ni6 cuboctahedra,  a faceface with one Co(1)Ti4Co4Ni4 cuboctahedra,  a faceface with one Co(3)Ti4Ni8 cuboctahedra, faces with two equivalent Ti(3)Co4Ni8 cuboctahedra, faces with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, faces with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, faces with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, and faces with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra. In the third Ni site, Ni(3) is bonded to one Ti(1), one Ti(2), two equivalent Ti(3), two equivalent Co(2), two equivalent Ni(1), and four equivalent Ni(2) atoms to form distorted NiTi4Co2Ni6 cuboctahedra that share corners with four equivalent Ti(3)Co4Ni8 cuboctahedra, corners with six equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, corners with eight equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, edges with two equivalent Ti(2)Co2Ni10 cuboctahedra, edges with two equivalent Ti(3)Co4Ni8 cuboctahedra, edges with two equivalent Ti(1)Co6Ni6 cuboctahedra, edges with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra,  a faceface with one Ti(2)Co2Ni10 cuboctahedra,  a faceface with one Ti(1)Co6Ni6 cuboctahedra, faces with two equivalent Ti(3)Co4Ni8 cuboctahedra, faces with two equivalent Co(2)Ti4Co4Ni4 cuboctahedra, faces with two equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, faces with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, faces with three equivalent Co(1)Ti4Co4Ni4 cuboctahedra, faces with three equivalent Co(3)Ti4Ni8 cuboctahedra, and faces with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra. is represented by the CIF card [CIF]
data_TiCoNi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.089
_cell_length_b   5.089
_cell_length_c   8.287
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.161
_symmetry_Int_Tables_number   1
_cell_volume   185.558
_cell_formula_units_Z   4
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
  Ti  Ti0  1  0.667  0.333  0.500  1.0
  Ti  Ti1  1  0.334  0.666  0.000  1.0
  Ti  Ti2  1  0.999  0.001  0.253  1.0
  Ti  Ti3  1  0.999  0.001  0.747  1.0
  Co  Co4  1  0.172  0.828  0.500  1.0
  Co  Co5  1  0.654  0.827  0.500  1.0
  Co  Co6  1  0.173  0.346  0.500  1.0
  Co  Co7  1  0.828  0.172  0.000  1.0
  Ni  Ni8  1  0.344  0.171  0.000  1.0
  Ni  Ni9  1  0.829  0.656  0.000  1.0
  Ni  Ni10  1  0.501  0.000  0.250  1.0
  Ni  Ni11  1  0.500  0.500  0.250  1.0
  Ni  Ni12  1  1.000  0.499  0.250  1.0
  Ni  Ni13  1  0.501  0.000  0.750  1.0
  Ni  Ni14  1  0.500  0.500  0.750  1.0
  Ni  Ni15  1  1.000  0.499  0.750  1.0
[/CIF]
.
The structure described by TiCoNi2 is beta Cu3Ti-derived structured and crystallizes in the orthorhombic Amm2 space group. There are three inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to two equivalent Co(1), four equivalent Co(2), two equivalent Ni(3), and four equivalent Ni(2) atoms to form TiCo6Ni6 cuboctahedra that share corners with six equivalent Ti(2)Co2Ni10 cuboctahedra, corners with six equivalent Ti(1)Co6Ni6 cuboctahedra, edges with two equivalent Co(1)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(3)Ti4Ni8 cuboctahedra, edges with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, edges with eight equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, faces with two equivalent Co(1)Ti4Co4Ni4 cuboctahedra, faces with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, faces with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, faces with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, and faces with six equivalent Ti(3)Co4Ni8 cuboctahedra. In the second Ti site, Ti(2) is bonded to two equivalent Co(3), two equivalent Ni(3), four equivalent Ni(1), and four equivalent Ni(2) atoms to form TiCo2Ni10 cuboctahedra that share corners with six equivalent Ti(2)Co2Ni10 cuboctahedra, corners with six equivalent Ti(1)Co6Ni6 cuboctahedra, edges with two equivalent Co(1)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(3)Ti4Ni8 cuboctahedra, edges with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, edges with eight equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, faces with two equivalent Co(3)Ti4Ni8 cuboctahedra, faces with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, faces with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, faces with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, and faces with six equivalent Ti(3)Co4Ni8 cuboctahedra. In the third Ti site, Ti(3) is bonded to one Co(1), one Co(3), two equivalent Co(2), two equivalent Ni(1), two equivalent Ni(3), and four equivalent Ni(2) atoms to form TiCo4Ni8 cuboctahedra that share corners with four equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, corners with six equivalent Ti(3)Co4Ni8 cuboctahedra, corners with eight equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, edges with two equivalent Co(1)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(3)Ti4Ni8 cuboctahedra, edges with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra,  a faceface with one Co(1)Ti4Co4Ni4 cuboctahedra,  a faceface with one Co(3)Ti4Ni8 cuboctahedra, faces with two equivalent Ti(3)Co4Ni8 cuboctahedra, faces with two equivalent Co(2)Ti4Co4Ni4 cuboctahedra, faces with two equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, faces with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, faces with three equivalent Ti(2)Co2Ni10 cuboctahedra, faces with three equivalent Ti(1)Co6Ni6 cuboctahedra, and faces with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent Ti(1), two equivalent Ti(3), four equivalent Co(2), and four equivalent Ni(2) atoms to form distorted CoTi4Co4Ni4 cuboctahedra that share corners with six equivalent Co(1)Ti4Co4Ni4 cuboctahedra, corners with six equivalent Co(3)Ti4Ni8 cuboctahedra, edges with two equivalent Ti(2)Co2Ni10 cuboctahedra, edges with two equivalent Ti(1)Co6Ni6 cuboctahedra, edges with four equivalent Ti(3)Co4Ni8 cuboctahedra, edges with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with eight equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, faces with two equivalent Ti(3)Co4Ni8 cuboctahedra, faces with two equivalent Ti(1)Co6Ni6 cuboctahedra, faces with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, faces with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, and faces with six equivalent Ni(3)Ti4Co2Ni6 cuboctahedra. In the second Co site, Co(2) is bonded to two equivalent Ti(1), two equivalent Ti(3), two equivalent Co(1), two equivalent Co(2), two equivalent Ni(2), and two equivalent Ni(3) atoms to form distorted CoTi4Co4Ni4 cuboctahedra that share corners with six equivalent Co(2)Ti4Co4Ni4 cuboctahedra, corners with six equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with two equivalent Ti(2)Co2Ni10 cuboctahedra, edges with two equivalent Ti(1)Co6Ni6 cuboctahedra, edges with two equivalent Co(1)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(3)Ti4Ni8 cuboctahedra, edges with two equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Ti(3)Co4Ni8 cuboctahedra, edges with four equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, faces with two equivalent Ti(3)Co4Ni8 cuboctahedra, faces with two equivalent Ti(1)Co6Ni6 cuboctahedra, faces with two equivalent Co(1)Ti4Co4Ni4 cuboctahedra, faces with two equivalent Co(2)Ti4Co4Ni4 cuboctahedra, faces with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, and faces with eight equivalent Ni(2)Ti4Co3Ni5 cuboctahedra. In the third Co site, Co(3) is bonded to two equivalent Ti(2), two equivalent Ti(3), four equivalent Ni(1), and four equivalent Ni(2) atoms to form CoTi4Ni8 cuboctahedra that share corners with six equivalent Co(1)Ti4Co4Ni4 cuboctahedra, corners with six equivalent Co(3)Ti4Ni8 cuboctahedra, edges with two equivalent Ti(2)Co2Ni10 cuboctahedra, edges with two equivalent Ti(1)Co6Ni6 cuboctahedra, edges with four equivalent Ti(3)Co4Ni8 cuboctahedra, edges with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with eight equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, faces with two equivalent Ti(2)Co2Ni10 cuboctahedra, faces with two equivalent Ti(3)Co4Ni8 cuboctahedra, faces with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, faces with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, and faces with six equivalent Ni(3)Ti4Co2Ni6 cuboctahedra. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent Ti(2), two equivalent Ti(3), two equivalent Co(3), two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(3) atoms to form distorted NiTi4Co2Ni6 cuboctahedra that share corners with six equivalent Co(2)Ti4Co4Ni4 cuboctahedra, corners with six equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with two equivalent Ti(2)Co2Ni10 cuboctahedra, edges with two equivalent Ti(1)Co6Ni6 cuboctahedra, edges with two equivalent Co(1)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(3)Ti4Ni8 cuboctahedra, edges with two equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Ti(3)Co4Ni8 cuboctahedra, edges with four equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, faces with two equivalent Ti(2)Co2Ni10 cuboctahedra, faces with two equivalent Ti(3)Co4Ni8 cuboctahedra, faces with two equivalent Co(3)Ti4Ni8 cuboctahedra, faces with two equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, faces with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, and faces with eight equivalent Ni(2)Ti4Co3Ni5 cuboctahedra. In the second Ni site, Ni(2) is bonded to one Ti(1), one Ti(2), two equivalent Ti(3), one Co(1), one Co(2), one Co(3), one Ni(1), two equivalent Ni(2), and two equivalent Ni(3) atoms to form distorted NiTi4Co3Ni5 cuboctahedra that share corners with four equivalent Ti(3)Co4Ni8 cuboctahedra, corners with four equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, corners with ten equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, edges with two equivalent Ti(2)Co2Ni10 cuboctahedra, edges with two equivalent Ti(3)Co4Ni8 cuboctahedra, edges with two equivalent Ti(1)Co6Ni6 cuboctahedra, edges with two equivalent Co(1)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with two equivalent Co(3)Ti4Ni8 cuboctahedra, edges with two equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, edges with two equivalent Ni(2)Ti4Co3Ni5 cuboctahedra,  a faceface with one Ti(2)Co2Ni10 cuboctahedra,  a faceface with one Ti(1)Co6Ni6 cuboctahedra,  a faceface with one Co(1)Ti4Co4Ni4 cuboctahedra,  a faceface with one Co(3)Ti4Ni8 cuboctahedra, faces with two equivalent Ti(3)Co4Ni8 cuboctahedra, faces with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, faces with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, faces with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, and faces with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra. In the third Ni site, Ni(3) is bonded to one Ti(1), one Ti(2), two equivalent Ti(3), two equivalent Co(2), two equivalent Ni(1), and four equivalent Ni(2) atoms to form distorted NiTi4Co2Ni6 cuboctahedra that share corners with four equivalent Ti(3)Co4Ni8 cuboctahedra, corners with six equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, corners with eight equivalent Ni(2)Ti4Co3Ni5 cuboctahedra, edges with two equivalent Ti(2)Co2Ni10 cuboctahedra, edges with two equivalent Ti(3)Co4Ni8 cuboctahedra, edges with two equivalent Ti(1)Co6Ni6 cuboctahedra, edges with four equivalent Co(2)Ti4Co4Ni4 cuboctahedra, edges with four equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, edges with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra,  a faceface with one Ti(2)Co2Ni10 cuboctahedra,  a faceface with one Ti(1)Co6Ni6 cuboctahedra, faces with two equivalent Ti(3)Co4Ni8 cuboctahedra, faces with two equivalent Co(2)Ti4Co4Ni4 cuboctahedra, faces with two equivalent Ni(1)Ti4Co2Ni6 cuboctahedra, faces with two equivalent Ni(3)Ti4Co2Ni6 cuboctahedra, faces with three equivalent Co(1)Ti4Co4Ni4 cuboctahedra, faces with three equivalent Co(3)Ti4Ni8 cuboctahedra, and faces with four equivalent Ni(2)Ti4Co3Ni5 cuboctahedra. is represented by the CIF card [CIF]
data_TiCoNi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.089
_cell_length_b   5.089
_cell_length_c   8.287
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.161
_symmetry_Int_Tables_number   1
_cell_volume   185.558
_cell_formula_units_Z   4
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
  Ti  Ti0  1  0.667  0.333  0.500  1.0
  Ti  Ti1  1  0.334  0.666  0.000  1.0
  Ti  Ti2  1  0.999  0.001  0.253  1.0
  Ti  Ti3  1  0.999  0.001  0.747  1.0
  Co  Co4  1  0.172  0.828  0.500  1.0
  Co  Co5  1  0.654  0.827  0.500  1.0
  Co  Co6  1  0.173  0.346  0.500  1.0
  Co  Co7  1  0.828  0.172  0.000  1.0
  Ni  Ni8  1  0.344  0.171  0.000  1.0
  Ni  Ni9  1  0.829  0.656  0.000  1.0
  Ni  Ni10  1  0.501  0.000  0.250  1.0
  Ni  Ni11  1  0.500  0.500  0.250  1.0
  Ni  Ni12  1  1.000  0.499  0.250  1.0
  Ni  Ni13  1  0.501  0.000  0.750  1.0
  Ni  Ni14  1  0.500  0.500  0.750  1.0
  Ni  Ni15  1  1.000  0.499  0.750  1.0
[/CIF]
.