data_NaMg2W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.14
_cell_length_b   5.14
_cell_length_c   6.18
_cell_angle_alpha   93.34
_cell_angle_beta   93.34
_cell_angle_gamma   30.42
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaMg2W
_chemical_formula_sum   'Na1 Mg2 W1'
_cell_volume   82.4
_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
  Na  Na2  1  0.0  0.0  0.0  1.0
  Mg  Mg0  1  0.14  0.0  0.42  1.0
  Mg  Mg1  1  0.4  0.0  0.75  1.0
  W  W3  1  0.77  0.0  0.09  1.0

data_NaMg2W
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.69
_cell_length_b   5.14
_cell_length_c   6.18
_cell_angle_alpha   93.34
_cell_angle_beta   90.0
_cell_angle_gamma   105.21
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaMg2W
_chemical_formula_sum   'Na1 Mg2 W1'
_cell_volume   82.4
_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
  Na  Na0  1  0.0  0.0  0.0  1.0
  Mg  Mg1  1  0.0  0.6  0.25  1.0
  Mg  Mg2  1  0.0  0.86  0.58  1.0
  W  W3  1  0.0  0.23  0.91  1.0

Na Mg Mg W
NaMg2W crystallizes in the triclinic P1 space group. Na(1) is bonded in a single-bond geometry to one Mg(1), one Mg(2), and one W(1) atom. The Na(1)-Mg(1) bond length is 2.66 Å. The Na(1)-Mg(2) bond length is 2.63 Å. The Na(1)-W(1) bond length is 1.33 Å. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 5-coordinate geometry to one Na(1), one Mg(2), two equivalent Mg(1), and one W(1) atom. The Mg(1)-Mg(2) bond length is 2.35 Å. Both Mg(1)-Mg(1) bond lengths are 2.69 Å. The Mg(1)-W(1) bond length is 2.74 Å. In the second Mg site, Mg(2) is bonded in a 2-coordinate geometry to one Na(1), one Mg(1), and one W(1) atom. The Mg(2)-W(1) bond length is 2.74 Å. W(1) is bonded in a single-bond geometry to one Na(1), one Mg(1), and one Mg(2) atom.