data_Hf2MgCo
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.28
_cell_length_b   3.3
_cell_length_c   6.8
_cell_angle_alpha   90.0
_cell_angle_beta   95.51
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Hf2MgCo
_chemical_formula_sum   'Hf2 Mg1 Co1'
_cell_volume   73.47
_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
  Hf  Hf1  1  0.0  0.65  0.84  1.0
  Hf  Hf2  1  0.63  0.65  0.93  1.0
  Mg  Mg3  1  0.0  0.0  0.0  1.0
  Co  Co0  1  0.67  0.0  0.39  1.0

data_Hf2MgCo
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.28
_cell_length_b   3.3
_cell_length_c   6.8
_cell_angle_alpha   90.0
_cell_angle_beta   95.51
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Hf2MgCo
_chemical_formula_sum   'Hf2 Mg1 Co1'
_cell_volume   73.47
_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
  Hf  Hf0  1  0.0  0.65  0.84  1.0
  Hf  Hf1  1  0.63  0.65  0.93  1.0
  Mg  Mg2  1  0.0  0.0  0.0  1.0
  Co  Co3  1  0.67  0.0  0.39  1.0

Hf Hf Mg Co
MgHf2Co crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 7-coordinate geometry to two equivalent Hf(1), three equivalent Hf(2), and two equivalent Co(1) atoms. There is one shorter (1.58 Å) and one longer (2.41 Å) Mg(1)-Hf(1) bond length. There are a spread of Mg(1)-Hf(2) bond distances ranging from 1.71-2.49 Å. There is one shorter (2.93 Å) and one longer (3.27 Å) Mg(1)-Co(1) bond length. There are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 5-coordinate geometry to two equivalent Mg(1), two equivalent Hf(2), and one Co(1) atom. There is one shorter (1.43 Å) and one longer (2.10 Å) Hf(1)-Hf(2) bond length. The Hf(1)-Co(1) bond length is 3.38 Å. In the second Hf site, Hf(2) is bonded in a 2-coordinate geometry to three equivalent Mg(1) and two equivalent Hf(1) atoms. Co(1) is bonded in a 3-coordinate geometry to two equivalent Mg(1) and one Hf(1) atom.