The structure described by Cs2NaAs7 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 10-coordinate geometry to one As(5), two equivalent As(2), two equivalent As(3), two equivalent As(4), and three equivalent As(1) atoms. In the second Cs site, Cs(2) is bonded in a 10-coordinate geometry to one As(2), one As(4), one As(5), one As(7), two equivalent As(1), two equivalent As(3), and two equivalent As(6) atoms. Na(1) is bonded in a 5-coordinate geometry to one As(2), one As(4), one As(5), one As(6), and two equivalent As(7) atoms. There are seven inequivalent As sites. In the first As site, As(6) is bonded in a 6-coordinate geometry to two equivalent Cs(2), one Na(1), one As(3), one As(5), and one As(7) atom. In the second As site, As(7) is bonded in a 5-coordinate geometry to one Cs(2), two equivalent Na(1), one As(2), and one As(6) atom. In the third As site, As(1) is bonded in a 7-coordinate geometry to two equivalent Cs(2), three equivalent Cs(1), one As(2), and one As(3) atom. In the fourth As site, As(2) is bonded in a 7-coordinate geometry to one Cs(2), two equivalent Cs(1), one Na(1), one As(1), one As(4), and one As(7) atom. In the fifth As site, As(3) is bonded in a 7-coordinate geometry to two equivalent Cs(1), two equivalent Cs(2), one As(1), one As(5), and one As(6) atom. In the sixth As site, As(4) is bonded in a 6-coordinate geometry to one Cs(2), two equivalent Cs(1), one Na(1), one As(2), and one As(5) atom. In the seventh As site, As(5) is bonded in a 6-coordinate geometry to one Cs(1), one Cs(2), one Na(1), one As(3), one As(4), and one As(6) atom. is represented by the CIF card [CIF]
data_Cs2NaAs7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.018
_cell_length_b   10.310
_cell_length_c   11.885
_cell_angle_alpha   90.009
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1350.155
_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
  Cs  Cs0  1  0.297  0.462  0.988  1.0
  Cs  Cs1  1  0.797  0.038  0.012  1.0
  Cs  Cs2  1  0.703  0.538  0.012  1.0
  Cs  Cs3  1  0.203  0.962  0.988  1.0
  Cs  Cs4  1  0.004  0.351  0.734  1.0
  Cs  Cs5  1  0.504  0.149  0.266  1.0
  Cs  Cs6  1  0.996  0.649  0.266  1.0
  Cs  Cs7  1  0.496  0.851  0.734  1.0
  Na  Na8  1  0.198  0.055  0.465  1.0
  Na  Na9  1  0.698  0.445  0.535  1.0
  Na  Na10  1  0.802  0.945  0.535  1.0
  Na  Na11  1  0.302  0.555  0.465  1.0
  As  As12  1  0.500  0.178  0.903  1.0
  As  As13  1  0.000  0.322  0.097  1.0
  As  As14  1  0.500  0.822  0.097  1.0
  As  As15  1  1.000  0.678  0.903  1.0
  As  As16  1  0.653  0.284  0.787  1.0
  As  As17  1  0.153  0.216  0.213  1.0
  As  As18  1  0.347  0.716  0.213  1.0
  As  As19  1  0.847  0.784  0.787  1.0
  As  As20  1  0.334  0.188  0.779  1.0
  As  As21  1  0.834  0.312  0.221  1.0
  As  As22  1  0.666  0.812  0.221  1.0
  As  As23  1  0.166  0.688  0.779  1.0
  As  As24  1  0.953  0.985  0.743  1.0
  As  As25  1  0.453  0.515  0.257  1.0
  As  As26  1  0.047  0.015  0.257  1.0
  As  As27  1  0.547  0.485  0.743  1.0
  As  As28  1  0.366  0.398  0.670  1.0
  As  As29  1  0.866  0.102  0.330  1.0
  As  As30  1  0.634  0.602  0.330  1.0
  As  As31  1  0.134  0.898  0.670  1.0
  As  As32  1  0.425  0.187  0.584  1.0
  As  As33  1  0.925  0.313  0.416  1.0
  As  As34  1  0.575  0.813  0.416  1.0
  As  As35  1  0.075  0.687  0.584  1.0
  As  As36  1  0.136  0.332  0.389  1.0
  As  As37  1  0.636  0.168  0.611  1.0
  As  As38  1  0.864  0.668  0.611  1.0
  As  As39  1  0.364  0.832  0.389  1.0
[/CIF]
.
The structure described by Cs2NaAs7 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 10-coordinate geometry to one As(5), two equivalent As(2), two equivalent As(3), two equivalent As(4), and three equivalent As(1) atoms. In the second Cs site, Cs(2) is bonded in a 10-coordinate geometry to one As(2), one As(4), one As(5), one As(7), two equivalent As(1), two equivalent As(3), and two equivalent As(6) atoms. Na(1) is bonded in a 5-coordinate geometry to one As(2), one As(4), one As(5), one As(6), and two equivalent As(7) atoms. There are seven inequivalent As sites. In the first As site, As(6) is bonded in a 6-coordinate geometry to two equivalent Cs(2), one Na(1), one As(3), one As(5), and one As(7) atom. In the second As site, As(7) is bonded in a 5-coordinate geometry to one Cs(2), two equivalent Na(1), one As(2), and one As(6) atom. In the third As site, As(1) is bonded in a 7-coordinate geometry to two equivalent Cs(2), three equivalent Cs(1), one As(2), and one As(3) atom. In the fourth As site, As(2) is bonded in a 7-coordinate geometry to one Cs(2), two equivalent Cs(1), one Na(1), one As(1), one As(4), and one As(7) atom. In the fifth As site, As(3) is bonded in a 7-coordinate geometry to two equivalent Cs(1), two equivalent Cs(2), one As(1), one As(5), and one As(6) atom. In the sixth As site, As(4) is bonded in a 6-coordinate geometry to one Cs(2), two equivalent Cs(1), one Na(1), one As(2), and one As(5) atom. In the seventh As site, As(5) is bonded in a 6-coordinate geometry to one Cs(1), one Cs(2), one Na(1), one As(3), one As(4), and one As(6) atom. is represented by the CIF card [CIF]
data_Cs2NaAs7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.018
_cell_length_b   10.310
_cell_length_c   11.885
_cell_angle_alpha   90.009
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1350.155
_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
  Cs  Cs0  1  0.297  0.462  0.988  1.0
  Cs  Cs1  1  0.797  0.038  0.012  1.0
  Cs  Cs2  1  0.703  0.538  0.012  1.0
  Cs  Cs3  1  0.203  0.962  0.988  1.0
  Cs  Cs4  1  0.004  0.351  0.734  1.0
  Cs  Cs5  1  0.504  0.149  0.266  1.0
  Cs  Cs6  1  0.996  0.649  0.266  1.0
  Cs  Cs7  1  0.496  0.851  0.734  1.0
  Na  Na8  1  0.198  0.055  0.465  1.0
  Na  Na9  1  0.698  0.445  0.535  1.0
  Na  Na10  1  0.802  0.945  0.535  1.0
  Na  Na11  1  0.302  0.555  0.465  1.0
  As  As12  1  0.500  0.178  0.903  1.0
  As  As13  1  0.000  0.322  0.097  1.0
  As  As14  1  0.500  0.822  0.097  1.0
  As  As15  1  1.000  0.678  0.903  1.0
  As  As16  1  0.653  0.284  0.787  1.0
  As  As17  1  0.153  0.216  0.213  1.0
  As  As18  1  0.347  0.716  0.213  1.0
  As  As19  1  0.847  0.784  0.787  1.0
  As  As20  1  0.334  0.188  0.779  1.0
  As  As21  1  0.834  0.312  0.221  1.0
  As  As22  1  0.666  0.812  0.221  1.0
  As  As23  1  0.166  0.688  0.779  1.0
  As  As24  1  0.953  0.985  0.743  1.0
  As  As25  1  0.453  0.515  0.257  1.0
  As  As26  1  0.047  0.015  0.257  1.0
  As  As27  1  0.547  0.485  0.743  1.0
  As  As28  1  0.366  0.398  0.670  1.0
  As  As29  1  0.866  0.102  0.330  1.0
  As  As30  1  0.634  0.602  0.330  1.0
  As  As31  1  0.134  0.898  0.670  1.0
  As  As32  1  0.425  0.187  0.584  1.0
  As  As33  1  0.925  0.313  0.416  1.0
  As  As34  1  0.575  0.813  0.416  1.0
  As  As35  1  0.075  0.687  0.584  1.0
  As  As36  1  0.136  0.332  0.389  1.0
  As  As37  1  0.636  0.168  0.611  1.0
  As  As38  1  0.864  0.668  0.611  1.0
  As  As39  1  0.364  0.832  0.389  1.0
[/CIF]
.