The crystal structure described by BaNi2As2 crystallizes in the monoclinic C2/m space group. Ba(1) is bonded in a 16-coordinate geometry to eight equivalent Ni(1) and eight equivalent As(1) atoms. Ni(1) is bonded to four equivalent Ba(1) and four equivalent As(1) atoms to form a mixture of distorted face, corner, and edge-sharing NiBa4As4 tetrahedra. As(1) is bonded in a 8-coordinate geometry to four equivalent Ba(1) and four equivalent Ni(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba(NiAs)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.556
_cell_length_b   6.556
_cell_length_c   4.151
_cell_angle_alpha   72.123
_cell_angle_beta   72.123
_cell_angle_gamma   36.746
_symmetry_Int_Tables_number   1
_cell_volume   101.007
_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
  Ba  Ba0  1  0.000  0.000  0.000  1.0
  Ni  Ni1  1  0.751  0.751  0.779  1.0
  Ni  Ni2  1  0.249  0.249  0.221  1.0
  As  As3  1  0.342  0.342  0.638  1.0
  As  As4  1  0.658  0.658  0.362  1.0
[/CIF]
.
The crystal structure described by BaNi2As2 crystallizes in the monoclinic C2/m space group. Ba(1) is bonded in a 16-coordinate geometry to eight equivalent Ni(1) and eight equivalent As(1) atoms. Ni(1) is bonded to four equivalent Ba(1) and four equivalent As(1) atoms to form a mixture of distorted face, corner, and edge-sharing NiBa4As4 tetrahedra. As(1) is bonded in a 8-coordinate geometry to four equivalent Ba(1) and four equivalent Ni(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba(NiAs)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.556
_cell_length_b   6.556
_cell_length_c   4.151
_cell_angle_alpha   72.123
_cell_angle_beta   72.123
_cell_angle_gamma   36.746
_symmetry_Int_Tables_number   1
_cell_volume   101.007
_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
  Ba  Ba0  1  0.000  0.000  0.000  1.0
  Ni  Ni1  1  0.751  0.751  0.779  1.0
  Ni  Ni2  1  0.249  0.249  0.221  1.0
  As  As3  1  0.342  0.342  0.638  1.0
  As  As4  1  0.658  0.658  0.362  1.0
[/CIF]
.