The crystal structure described by Ce3Si6N11 crystallizes in the tetragonal P4bm space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 8-coordinate geometry to one N(2), one N(4), two equivalent N(3), and four equivalent N(1) atoms. In the second Ce site, Ce(2) is bonded in a 8-coordinate geometry to four equivalent N(1) and four equivalent N(3) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one N(1), one N(2), and two equivalent N(3) atoms to form corner-sharing SiN4 tetrahedra. In the second Si site, Si(2) is bonded to one N(2), one N(4), and two equivalent N(1) atoms to form corner-sharing SiN4 tetrahedra. There are four inequivalent N sites. In the first N site, N(4) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Ce(1) and two equivalent Si(2) atoms. In the second N site, N(1) is bonded in a 2-coordinate geometry to one Ce(2), two equivalent Ce(1), one Si(1), and one Si(2) atom. In the third N site, N(2) is bonded in a trigonal planar geometry to one Ce(1), one Si(2), and two equivalent Si(1) atoms. In the fourth N site, N(3) is bonded to one Ce(1), one Ce(2), and two equivalent Si(1) atoms to form a mixture of distorted edge and corner-sharing NCe2Si2 trigonal pyramids. is represented by the CIF card [CIF]
data_Ce3Si6N11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.130
_cell_length_b   10.130
_cell_length_c   4.854
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   498.081
_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
  Ce  Ce0  1  0.180  0.320  0.646  1.0
  Ce  Ce1  1  0.320  0.820  0.646  1.0
  Ce  Ce2  1  0.680  0.180  0.646  1.0
  Ce  Ce3  1  0.820  0.680  0.646  1.0
  Ce  Ce4  1  0.000  0.000  0.650  1.0
  Ce  Ce5  1  0.500  0.500  0.650  1.0
  Si  Si6  1  0.209  0.079  0.114  1.0
  Si  Si7  1  0.079  0.791  0.114  1.0
  Si  Si8  1  0.921  0.209  0.114  1.0
  Si  Si9  1  0.791  0.921  0.114  1.0
  Si  Si10  1  0.709  0.421  0.114  1.0
  Si  Si11  1  0.291  0.579  0.114  1.0
  Si  Si12  1  0.421  0.291  0.114  1.0
  Si  Si13  1  0.579  0.709  0.114  1.0
  Si  Si14  1  0.117  0.617  0.603  1.0
  Si  Si15  1  0.617  0.883  0.603  1.0
  Si  Si16  1  0.383  0.117  0.603  1.0
  Si  Si17  1  0.883  0.383  0.603  1.0
  N  N18  1  0.231  0.075  0.467  1.0
  N  N19  1  0.075  0.769  0.467  1.0
  N  N20  1  0.925  0.231  0.467  1.0
  N  N21  1  0.769  0.925  0.467  1.0
  N  N22  1  0.731  0.425  0.467  1.0
  N  N23  1  0.269  0.575  0.467  1.0
  N  N24  1  0.425  0.269  0.467  1.0
  N  N25  1  0.575  0.731  0.467  1.0
  N  N26  1  0.153  0.653  0.950  1.0
  N  N27  1  0.653  0.847  0.950  1.0
  N  N28  1  0.347  0.153  0.950  1.0
  N  N29  1  0.847  0.347  0.950  1.0
  N  N30  1  0.178  0.920  0.004  1.0
  N  N31  1  0.920  0.822  0.004  1.0
  N  N32  1  0.080  0.178  0.004  1.0
  N  N33  1  0.822  0.080  0.004  1.0
  N  N34  1  0.678  0.580  0.004  1.0
  N  N35  1  0.322  0.420  0.004  1.0
  N  N36  1  0.580  0.322  0.004  1.0
  N  N37  1  0.420  0.678  0.004  1.0
  N  N38  1  0.000  0.500  0.578  1.0
  N  N39  1  0.500  0.000  0.578  1.0
[/CIF]
.
The crystal structure described by Ce3Si6N11 crystallizes in the tetragonal P4bm space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 8-coordinate geometry to one N(2), one N(4), two equivalent N(3), and four equivalent N(1) atoms. In the second Ce site, Ce(2) is bonded in a 8-coordinate geometry to four equivalent N(1) and four equivalent N(3) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one N(1), one N(2), and two equivalent N(3) atoms to form corner-sharing SiN4 tetrahedra. In the second Si site, Si(2) is bonded to one N(2), one N(4), and two equivalent N(1) atoms to form corner-sharing SiN4 tetrahedra. There are four inequivalent N sites. In the first N site, N(4) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Ce(1) and two equivalent Si(2) atoms. In the second N site, N(1) is bonded in a 2-coordinate geometry to one Ce(2), two equivalent Ce(1), one Si(1), and one Si(2) atom. In the third N site, N(2) is bonded in a trigonal planar geometry to one Ce(1), one Si(2), and two equivalent Si(1) atoms. In the fourth N site, N(3) is bonded to one Ce(1), one Ce(2), and two equivalent Si(1) atoms to form a mixture of distorted edge and corner-sharing NCe2Si2 trigonal pyramids. is represented by the CIF card [CIF]
data_Ce3Si6N11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.130
_cell_length_b   10.130
_cell_length_c   4.854
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   498.081
_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
  Ce  Ce0  1  0.180  0.320  0.646  1.0
  Ce  Ce1  1  0.320  0.820  0.646  1.0
  Ce  Ce2  1  0.680  0.180  0.646  1.0
  Ce  Ce3  1  0.820  0.680  0.646  1.0
  Ce  Ce4  1  0.000  0.000  0.650  1.0
  Ce  Ce5  1  0.500  0.500  0.650  1.0
  Si  Si6  1  0.209  0.079  0.114  1.0
  Si  Si7  1  0.079  0.791  0.114  1.0
  Si  Si8  1  0.921  0.209  0.114  1.0
  Si  Si9  1  0.791  0.921  0.114  1.0
  Si  Si10  1  0.709  0.421  0.114  1.0
  Si  Si11  1  0.291  0.579  0.114  1.0
  Si  Si12  1  0.421  0.291  0.114  1.0
  Si  Si13  1  0.579  0.709  0.114  1.0
  Si  Si14  1  0.117  0.617  0.603  1.0
  Si  Si15  1  0.617  0.883  0.603  1.0
  Si  Si16  1  0.383  0.117  0.603  1.0
  Si  Si17  1  0.883  0.383  0.603  1.0
  N  N18  1  0.231  0.075  0.467  1.0
  N  N19  1  0.075  0.769  0.467  1.0
  N  N20  1  0.925  0.231  0.467  1.0
  N  N21  1  0.769  0.925  0.467  1.0
  N  N22  1  0.731  0.425  0.467  1.0
  N  N23  1  0.269  0.575  0.467  1.0
  N  N24  1  0.425  0.269  0.467  1.0
  N  N25  1  0.575  0.731  0.467  1.0
  N  N26  1  0.153  0.653  0.950  1.0
  N  N27  1  0.653  0.847  0.950  1.0
  N  N28  1  0.347  0.153  0.950  1.0
  N  N29  1  0.847  0.347  0.950  1.0
  N  N30  1  0.178  0.920  0.004  1.0
  N  N31  1  0.920  0.822  0.004  1.0
  N  N32  1  0.080  0.178  0.004  1.0
  N  N33  1  0.822  0.080  0.004  1.0
  N  N34  1  0.678  0.580  0.004  1.0
  N  N35  1  0.322  0.420  0.004  1.0
  N  N36  1  0.580  0.322  0.004  1.0
  N  N37  1  0.420  0.678  0.004  1.0
  N  N38  1  0.000  0.500  0.578  1.0
  N  N39  1  0.500  0.000  0.578  1.0
[/CIF]
.