The structure described by Hf2Ru3Si4 is Magnesium tetraboride-derived structured and crystallizes in the monoclinic C2/c space group. There are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 11-coordinate geometry to one Ru(1), one Ru(2), three equivalent Ru(3), one Si(1), one Si(2), one Si(4), one Si(5), and two equivalent Si(3) atoms. In the second Hf site, Hf(2) is bonded in a 10-coordinate geometry to one Ru(1), one Ru(2), one Si(1), one Si(2), one Si(3), two equivalent Si(4), and three equivalent Si(5) atoms. There are three inequivalent Ru sites. In the first Ru site, Ru(1) is bonded in a 8-coordinate geometry to one Hf(1), one Hf(2), two equivalent Si(3), two equivalent Si(4), and two equivalent Si(5) atoms. In the second Ru site, Ru(2) is bonded in a 6-coordinate geometry to one Hf(1), one Hf(2), one Si(1), one Si(2), one Si(3), one Si(4), and two equivalent Si(5) atoms. In the third Ru site, Ru(3) is bonded in a 5-coordinate geometry to three equivalent Hf(1), one Si(1), one Si(2), one Si(4), and two equivalent Si(3) atoms. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to two equivalent Hf(1), two equivalent Hf(2), two equivalent Ru(2), and two equivalent Ru(3) atoms. In the second Si site, Si(2) is bonded in a 8-coordinate geometry to two equivalent Hf(1), two equivalent Hf(2), two equivalent Ru(2), and two equivalent Ru(3) atoms. In the third Si site, Si(3) is bonded in a 7-coordinate geometry to one Hf(2), two equivalent Hf(1), one Ru(2), two equivalent Ru(1), two equivalent Ru(3), and one Si(4) atom. In the fourth Si site, Si(4) is bonded in a 9-coordinate geometry to one Hf(1), two equivalent Hf(2), one Ru(2), one Ru(3), two equivalent Ru(1), one Si(3), and one Si(5) atom. In the fifth Si site, Si(5) is bonded in a 9-coordinate geometry to one Hf(1), three equivalent Hf(2), two equivalent Ru(1), two equivalent Ru(2), and one Si(4) atom. is represented by the CIF card [CIF]
data_Hf2Si4Ru3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.874
_cell_length_b   9.874
_cell_length_c   13.316
_cell_angle_alpha   54.054
_cell_angle_beta   54.054
_cell_angle_gamma   31.484
_symmetry_Int_Tables_number   1
_cell_volume   537.283
_cell_formula_units_Z   4
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  0.298  0.555  0.648  1.0
  Hf  Hf1  1  0.445  0.702  0.852  1.0
  Hf  Hf2  1  0.702  0.445  0.352  1.0
  Hf  Hf3  1  0.555  0.298  0.148  1.0
  Hf  Hf4  1  0.038  0.294  0.638  1.0
  Hf  Hf5  1  0.706  0.962  0.862  1.0
  Hf  Hf6  1  0.962  0.706  0.362  1.0
  Hf  Hf7  1  0.294  0.038  0.138  1.0
  Si  Si8  1  0.873  0.127  0.250  1.0
  Si  Si9  1  0.127  0.873  0.750  1.0
  Si  Si10  1  0.381  0.619  0.250  1.0
  Si  Si11  1  0.619  0.381  0.750  1.0
  Si  Si12  1  0.971  0.255  0.894  1.0
  Si  Si13  1  0.745  0.029  0.606  1.0
  Si  Si14  1  0.029  0.745  0.106  1.0
  Si  Si15  1  0.255  0.971  0.394  1.0
  Si  Si16  1  0.572  0.086  0.064  1.0
  Si  Si17  1  0.914  0.428  0.436  1.0
  Si  Si18  1  0.428  0.914  0.936  1.0
  Si  Si19  1  0.086  0.572  0.564  1.0
  Si  Si20  1  0.388  0.143  0.395  1.0
  Si  Si21  1  0.857  0.612  0.105  1.0
  Si  Si22  1  0.612  0.857  0.605  1.0
  Si  Si23  1  0.143  0.388  0.895  1.0
  Ru  Ru24  1  0.650  0.826  0.280  1.0
  Ru  Ru25  1  0.174  0.350  0.220  1.0
  Ru  Ru26  1  0.767  0.479  0.067  1.0
  Ru  Ru27  1  0.826  0.650  0.780  1.0
  Ru  Ru28  1  0.908  0.134  0.584  1.0
  Ru  Ru29  1  0.866  0.092  0.916  1.0
  Ru  Ru30  1  0.092  0.866  0.416  1.0
  Ru  Ru31  1  0.134  0.908  0.084  1.0
  Ru  Ru32  1  0.233  0.521  0.933  1.0
  Ru  Ru33  1  0.479  0.767  0.567  1.0
  Ru  Ru34  1  0.521  0.233  0.433  1.0
  Ru  Ru35  1  0.350  0.174  0.720  1.0
[/CIF]
.
The structure described by Hf2Ru3Si4 is Magnesium tetraboride-derived structured and crystallizes in the monoclinic C2/c space group. There are two inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 11-coordinate geometry to one Ru(1), one Ru(2), three equivalent Ru(3), one Si(1), one Si(2), one Si(4), one Si(5), and two equivalent Si(3) atoms. In the second Hf site, Hf(2) is bonded in a 10-coordinate geometry to one Ru(1), one Ru(2), one Si(1), one Si(2), one Si(3), two equivalent Si(4), and three equivalent Si(5) atoms. There are three inequivalent Ru sites. In the first Ru site, Ru(1) is bonded in a 8-coordinate geometry to one Hf(1), one Hf(2), two equivalent Si(3), two equivalent Si(4), and two equivalent Si(5) atoms. In the second Ru site, Ru(2) is bonded in a 6-coordinate geometry to one Hf(1), one Hf(2), one Si(1), one Si(2), one Si(3), one Si(4), and two equivalent Si(5) atoms. In the third Ru site, Ru(3) is bonded in a 5-coordinate geometry to three equivalent Hf(1), one Si(1), one Si(2), one Si(4), and two equivalent Si(3) atoms. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to two equivalent Hf(1), two equivalent Hf(2), two equivalent Ru(2), and two equivalent Ru(3) atoms. In the second Si site, Si(2) is bonded in a 8-coordinate geometry to two equivalent Hf(1), two equivalent Hf(2), two equivalent Ru(2), and two equivalent Ru(3) atoms. In the third Si site, Si(3) is bonded in a 7-coordinate geometry to one Hf(2), two equivalent Hf(1), one Ru(2), two equivalent Ru(1), two equivalent Ru(3), and one Si(4) atom. In the fourth Si site, Si(4) is bonded in a 9-coordinate geometry to one Hf(1), two equivalent Hf(2), one Ru(2), one Ru(3), two equivalent Ru(1), one Si(3), and one Si(5) atom. In the fifth Si site, Si(5) is bonded in a 9-coordinate geometry to one Hf(1), three equivalent Hf(2), two equivalent Ru(1), two equivalent Ru(2), and one Si(4) atom. is represented by the CIF card [CIF]
data_Hf2Si4Ru3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.874
_cell_length_b   9.874
_cell_length_c   13.316
_cell_angle_alpha   54.054
_cell_angle_beta   54.054
_cell_angle_gamma   31.484
_symmetry_Int_Tables_number   1
_cell_volume   537.283
_cell_formula_units_Z   4
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  0.298  0.555  0.648  1.0
  Hf  Hf1  1  0.445  0.702  0.852  1.0
  Hf  Hf2  1  0.702  0.445  0.352  1.0
  Hf  Hf3  1  0.555  0.298  0.148  1.0
  Hf  Hf4  1  0.038  0.294  0.638  1.0
  Hf  Hf5  1  0.706  0.962  0.862  1.0
  Hf  Hf6  1  0.962  0.706  0.362  1.0
  Hf  Hf7  1  0.294  0.038  0.138  1.0
  Si  Si8  1  0.873  0.127  0.250  1.0
  Si  Si9  1  0.127  0.873  0.750  1.0
  Si  Si10  1  0.381  0.619  0.250  1.0
  Si  Si11  1  0.619  0.381  0.750  1.0
  Si  Si12  1  0.971  0.255  0.894  1.0
  Si  Si13  1  0.745  0.029  0.606  1.0
  Si  Si14  1  0.029  0.745  0.106  1.0
  Si  Si15  1  0.255  0.971  0.394  1.0
  Si  Si16  1  0.572  0.086  0.064  1.0
  Si  Si17  1  0.914  0.428  0.436  1.0
  Si  Si18  1  0.428  0.914  0.936  1.0
  Si  Si19  1  0.086  0.572  0.564  1.0
  Si  Si20  1  0.388  0.143  0.395  1.0
  Si  Si21  1  0.857  0.612  0.105  1.0
  Si  Si22  1  0.612  0.857  0.605  1.0
  Si  Si23  1  0.143  0.388  0.895  1.0
  Ru  Ru24  1  0.650  0.826  0.280  1.0
  Ru  Ru25  1  0.174  0.350  0.220  1.0
  Ru  Ru26  1  0.767  0.479  0.067  1.0
  Ru  Ru27  1  0.826  0.650  0.780  1.0
  Ru  Ru28  1  0.908  0.134  0.584  1.0
  Ru  Ru29  1  0.866  0.092  0.916  1.0
  Ru  Ru30  1  0.092  0.866  0.416  1.0
  Ru  Ru31  1  0.134  0.908  0.084  1.0
  Ru  Ru32  1  0.233  0.521  0.933  1.0
  Ru  Ru33  1  0.479  0.767  0.567  1.0
  Ru  Ru34  1  0.521  0.233  0.433  1.0
  Ru  Ru35  1  0.350  0.174  0.720  1.0
[/CIF]
.