The crystal structure described by Sr2Pd4Al5 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 14-coordinate geometry to one Pd(2), one Pd(3), one Pd(4), three equivalent Pd(1), one Al(1), two equivalent Al(4), two equivalent Al(5), and three equivalent Al(3) atoms. In the second Sr site, Sr(2) is bonded in a 1-coordinate geometry to two equivalent Pd(2), two equivalent Pd(3), and three equivalent Pd(4) atoms. There are four inequivalent Pd sites. In the first Pd site, Pd(2) is bonded in a 9-coordinate geometry to one Sr(1), two equivalent Sr(2), one Al(5), two equivalent Al(3), and three equivalent Al(2) atoms. In the second Pd site, Pd(3) is bonded in a 9-coordinate geometry to one Sr(1), two equivalent Sr(2), one Al(2), one Al(4), two equivalent Al(1), and two equivalent Al(5) atoms. In the third Pd site, Pd(4) is bonded in a 10-coordinate geometry to one Sr(1), three equivalent Sr(2), two equivalent Pd(4), one Al(1), and three equivalent Al(4) atoms. In the fourth Pd site, Pd(1) is bonded in a 7-coordinate geometry to three equivalent Sr(1), one Al(4), one Al(5), two equivalent Al(1), and two equivalent Al(3) atoms. There are five inequivalent Al sites. In the first Al site, Al(1) is bonded in a 5-coordinate geometry to one Sr(1), one Pd(4), two equivalent Pd(1), and two equivalent Pd(3) atoms. In the second Al site, Al(2) is bonded in a 4-coordinate geometry to one Pd(3) and three equivalent Pd(2) atoms. In the third Al site, Al(3) is bonded in a 4-coordinate geometry to three equivalent Sr(1), two equivalent Pd(1), and two equivalent Pd(2) atoms. In the fourth Al site, Al(4) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Pd(1), one Pd(3), and three equivalent Pd(4) atoms. In the fifth Al site, Al(5) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Pd(1), one Pd(2), and two equivalent Pd(3) atoms. is represented by the CIF card [CIF]
data_Sr2Al5Pd4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.322
_cell_length_b   11.139
_cell_length_c   18.310
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   881.374
_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
  Sr  Sr0  1  0.250  0.166  0.807  1.0
  Sr  Sr1  1  0.250  0.334  0.307  1.0
  Sr  Sr2  1  0.750  0.834  0.193  1.0
  Sr  Sr3  1  0.750  0.666  0.693  1.0
  Sr  Sr4  1  0.250  0.739  0.508  1.0
  Sr  Sr5  1  0.250  0.761  0.008  1.0
  Sr  Sr6  1  0.750  0.261  0.492  1.0
  Sr  Sr7  1  0.750  0.239  0.992  1.0
  Al  Al8  1  0.250  0.858  0.827  1.0
  Al  Al9  1  0.250  0.642  0.327  1.0
  Al  Al10  1  0.750  0.142  0.173  1.0
  Al  Al11  1  0.750  0.358  0.673  1.0
  Al  Al12  1  0.250  0.044  0.547  1.0
  Al  Al13  1  0.250  0.456  0.047  1.0
  Al  Al14  1  0.750  0.956  0.453  1.0
  Al  Al15  1  0.750  0.544  0.953  1.0
  Al  Al16  1  0.250  0.929  0.678  1.0
  Al  Al17  1  0.250  0.571  0.178  1.0
  Al  Al18  1  0.750  0.071  0.322  1.0
  Al  Al19  1  0.750  0.429  0.822  1.0
  Al  Al20  1  0.250  0.453  0.601  1.0
  Al  Al21  1  0.250  0.047  0.101  1.0
  Al  Al22  1  0.750  0.547  0.399  1.0
  Al  Al23  1  0.750  0.953  0.899  1.0
  Al  Al24  1  0.250  0.609  0.837  1.0
  Al  Al25  1  0.250  0.891  0.337  1.0
  Al  Al26  1  0.750  0.391  0.163  1.0
  Al  Al27  1  0.750  0.109  0.663  1.0
  Pd  Pd28  1  0.250  0.435  0.744  1.0
  Pd  Pd29  1  0.250  0.065  0.244  1.0
  Pd  Pd30  1  0.750  0.565  0.256  1.0
  Pd  Pd31  1  0.750  0.935  0.756  1.0
  Pd  Pd32  1  0.250  0.420  0.909  1.0
  Pd  Pd33  1  0.250  0.080  0.409  1.0
  Pd  Pd34  1  0.750  0.580  0.091  1.0
  Pd  Pd35  1  0.750  0.920  0.591  1.0
  Pd  Pd36  1  0.250  0.225  0.636  1.0
  Pd  Pd37  1  0.250  0.275  0.136  1.0
  Pd  Pd38  1  0.750  0.775  0.364  1.0
  Pd  Pd39  1  0.750  0.725  0.864  1.0
  Pd  Pd40  1  0.250  0.015  0.952  1.0
  Pd  Pd41  1  0.250  0.485  0.452  1.0
  Pd  Pd42  1  0.750  0.985  0.048  1.0
  Pd  Pd43  1  0.750  0.515  0.548  1.0
[/CIF]
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The crystal structure described by Sr2Pd4Al5 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 14-coordinate geometry to one Pd(2), one Pd(3), one Pd(4), three equivalent Pd(1), one Al(1), two equivalent Al(4), two equivalent Al(5), and three equivalent Al(3) atoms. In the second Sr site, Sr(2) is bonded in a 1-coordinate geometry to two equivalent Pd(2), two equivalent Pd(3), and three equivalent Pd(4) atoms. There are four inequivalent Pd sites. In the first Pd site, Pd(2) is bonded in a 9-coordinate geometry to one Sr(1), two equivalent Sr(2), one Al(5), two equivalent Al(3), and three equivalent Al(2) atoms. In the second Pd site, Pd(3) is bonded in a 9-coordinate geometry to one Sr(1), two equivalent Sr(2), one Al(2), one Al(4), two equivalent Al(1), and two equivalent Al(5) atoms. In the third Pd site, Pd(4) is bonded in a 10-coordinate geometry to one Sr(1), three equivalent Sr(2), two equivalent Pd(4), one Al(1), and three equivalent Al(4) atoms. In the fourth Pd site, Pd(1) is bonded in a 7-coordinate geometry to three equivalent Sr(1), one Al(4), one Al(5), two equivalent Al(1), and two equivalent Al(3) atoms. There are five inequivalent Al sites. In the first Al site, Al(1) is bonded in a 5-coordinate geometry to one Sr(1), one Pd(4), two equivalent Pd(1), and two equivalent Pd(3) atoms. In the second Al site, Al(2) is bonded in a 4-coordinate geometry to one Pd(3) and three equivalent Pd(2) atoms. In the third Al site, Al(3) is bonded in a 4-coordinate geometry to three equivalent Sr(1), two equivalent Pd(1), and two equivalent Pd(2) atoms. In the fourth Al site, Al(4) is bonded in a 5-coordinate geometry to two equivalent Sr(1), one Pd(1), one Pd(3), and three equivalent Pd(4) atoms. In the fifth Al site, Al(5) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Pd(1), one Pd(2), and two equivalent Pd(3) atoms. is represented by the CIF card [CIF]
data_Sr2Al5Pd4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.322
_cell_length_b   11.139
_cell_length_c   18.310
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   881.374
_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
  Sr  Sr0  1  0.250  0.166  0.807  1.0
  Sr  Sr1  1  0.250  0.334  0.307  1.0
  Sr  Sr2  1  0.750  0.834  0.193  1.0
  Sr  Sr3  1  0.750  0.666  0.693  1.0
  Sr  Sr4  1  0.250  0.739  0.508  1.0
  Sr  Sr5  1  0.250  0.761  0.008  1.0
  Sr  Sr6  1  0.750  0.261  0.492  1.0
  Sr  Sr7  1  0.750  0.239  0.992  1.0
  Al  Al8  1  0.250  0.858  0.827  1.0
  Al  Al9  1  0.250  0.642  0.327  1.0
  Al  Al10  1  0.750  0.142  0.173  1.0
  Al  Al11  1  0.750  0.358  0.673  1.0
  Al  Al12  1  0.250  0.044  0.547  1.0
  Al  Al13  1  0.250  0.456  0.047  1.0
  Al  Al14  1  0.750  0.956  0.453  1.0
  Al  Al15  1  0.750  0.544  0.953  1.0
  Al  Al16  1  0.250  0.929  0.678  1.0
  Al  Al17  1  0.250  0.571  0.178  1.0
  Al  Al18  1  0.750  0.071  0.322  1.0
  Al  Al19  1  0.750  0.429  0.822  1.0
  Al  Al20  1  0.250  0.453  0.601  1.0
  Al  Al21  1  0.250  0.047  0.101  1.0
  Al  Al22  1  0.750  0.547  0.399  1.0
  Al  Al23  1  0.750  0.953  0.899  1.0
  Al  Al24  1  0.250  0.609  0.837  1.0
  Al  Al25  1  0.250  0.891  0.337  1.0
  Al  Al26  1  0.750  0.391  0.163  1.0
  Al  Al27  1  0.750  0.109  0.663  1.0
  Pd  Pd28  1  0.250  0.435  0.744  1.0
  Pd  Pd29  1  0.250  0.065  0.244  1.0
  Pd  Pd30  1  0.750  0.565  0.256  1.0
  Pd  Pd31  1  0.750  0.935  0.756  1.0
  Pd  Pd32  1  0.250  0.420  0.909  1.0
  Pd  Pd33  1  0.250  0.080  0.409  1.0
  Pd  Pd34  1  0.750  0.580  0.091  1.0
  Pd  Pd35  1  0.750  0.920  0.591  1.0
  Pd  Pd36  1  0.250  0.225  0.636  1.0
  Pd  Pd37  1  0.250  0.275  0.136  1.0
  Pd  Pd38  1  0.750  0.775  0.364  1.0
  Pd  Pd39  1  0.750  0.725  0.864  1.0
  Pd  Pd40  1  0.250  0.015  0.952  1.0
  Pd  Pd41  1  0.250  0.485  0.452  1.0
  Pd  Pd42  1  0.750  0.985  0.048  1.0
  Pd  Pd43  1  0.750  0.515  0.548  1.0
[/CIF]
.