The compound described by TaSiAs is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. Ta(1) is bonded in a 9-coordinate geometry to four equivalent Si(1) and five equivalent As(1) atoms. Si(1) is bonded in a 8-coordinate geometry to four equivalent Ta(1) and four equivalent Si(1) atoms. As(1) is bonded in a 5-coordinate geometry to five equivalent Ta(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_TaSiAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.505
_cell_length_b   3.505
_cell_length_c   7.866
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   96.661
_cell_formula_units_Z   2
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
  Ta  Ta0  1  0.250  0.250  0.255  1.0
  Ta  Ta1  1  0.750  0.750  0.745  1.0
  Si  Si2  1  0.750  0.250  0.000  1.0
  Si  Si3  1  0.250  0.750  0.000  1.0
  As  As4  1  0.250  0.250  0.612  1.0
  As  As5  1  0.750  0.750  0.388  1.0
[/CIF]
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The compound described by TaSiAs is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. Ta(1) is bonded in a 9-coordinate geometry to four equivalent Si(1) and five equivalent As(1) atoms. Si(1) is bonded in a 8-coordinate geometry to four equivalent Ta(1) and four equivalent Si(1) atoms. As(1) is bonded in a 5-coordinate geometry to five equivalent Ta(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_TaSiAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.505
_cell_length_b   3.505
_cell_length_c   7.866
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   96.661
_cell_formula_units_Z   2
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
  Ta  Ta0  1  0.250  0.250  0.255  1.0
  Ta  Ta1  1  0.750  0.750  0.745  1.0
  Si  Si2  1  0.750  0.250  0.000  1.0
  Si  Si3  1  0.250  0.750  0.000  1.0
  As  As4  1  0.250  0.250  0.612  1.0
  As  As5  1  0.750  0.750  0.388  1.0
[/CIF]
.