data_Na2MgPd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.06
_cell_length_b   4.06
_cell_length_c   5.1
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2MgPd
_chemical_formula_sum   'Na2 Mg1 Pd1'
_cell_volume   84.28
_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  Na1  1  0.0  0.03  0.55  1.0
  Na  Na2  1  0.03  0.0  0.55  1.0
  Mg  Mg0  1  0.0  0.0  0.0  1.0
  Pd  Pd3  1  0.03  0.03  0.0  1.0

data_Na2MgPd
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.75
_cell_length_b   5.75
_cell_length_c   5.1
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Na2MgPd
_chemical_formula_sum   'Na4 Mg2 Pd2'
_cell_volume   168.57
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  4  0.02  0.02  0.55  1.0
  Mg  Mg1  2  0.0  0.0  0.0  1.0
  Pd  Pd2  2  0.03  0.0  0.0  1.0

Na Na Mg Pd
(Na)2MgPd is alpha carbon monoxide-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two magnesium--palladium (1/1) molecules and two Na clusters. In each Na cluster, Na(1) is bonded in a single-bond geometry to one Na(1) atom. The Na(1)-Na(1) bond length is 0.18 Å.