The structure described by La2SiC(NO2)2 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to two equivalent N(1), two equivalent N(2), one O(1), one O(3), one O(4), and two equivalent O(2) atoms. In the second La site, La(2) is bonded in a 9-coordinate geometry to one N(1), one N(2), one O(2), two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms. Si(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. C(1) is bonded in a linear geometry to one N(1) and one N(2) atom. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted single-bond geometry to one La(2), two equivalent La(1), and one C(1) atom. In the second N site, N(2) is bonded in a distorted single-bond geometry to one La(2), two equivalent La(1), and one C(1) atom. There are four inequivalent O sites. In the first O site, O(3) is bonded in a 4-coordinate geometry to one La(1), two equivalent La(2), and one Si(1) atom. In the second O site, O(4) is bonded in a distorted single-bond geometry to one La(1), two equivalent La(2), and one Si(1) atom. In the third O site, O(1) is bonded in a distorted single-bond geometry to one La(1), two equivalent La(2), and one Si(1) atom. In the fourth O site, O(2) is bonded in a 1-coordinate geometry to one La(2), two equivalent La(1), and one Si(1) atom. is represented by the CIF file [CIF]
data_La2SiC(NO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.916
_cell_length_b   6.575
_cell_length_c   6.680
_cell_angle_alpha   74.725
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   547.289
_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
  La  La0  1  0.099  0.588  0.219  1.0
  La  La1  1  0.599  0.412  0.281  1.0
  La  La2  1  0.901  0.412  0.781  1.0
  La  La3  1  0.401  0.588  0.719  1.0
  La  La4  1  0.855  0.970  0.330  1.0
  La  La5  1  0.355  0.030  0.170  1.0
  La  La6  1  0.145  0.030  0.670  1.0
  La  La7  1  0.645  0.970  0.830  1.0
  Si  Si8  1  0.901  0.908  0.813  1.0
  Si  Si9  1  0.401  0.092  0.687  1.0
  Si  Si10  1  0.099  0.092  0.187  1.0
  Si  Si11  1  0.599  0.908  0.313  1.0
  C  C12  1  0.848  0.474  0.269  1.0
  C  C13  1  0.348  0.526  0.231  1.0
  C  C14  1  0.152  0.526  0.731  1.0
  C  C15  1  0.652  0.474  0.769  1.0
  N  N16  1  0.902  0.575  0.362  1.0
  N  N17  1  0.402  0.425  0.138  1.0
  N  N18  1  0.098  0.425  0.638  1.0
  N  N19  1  0.598  0.575  0.862  1.0
  N  N20  1  0.796  0.370  0.176  1.0
  N  N21  1  0.296  0.630  0.324  1.0
  N  N22  1  0.204  0.630  0.824  1.0
  N  N23  1  0.704  0.370  0.676  1.0
  O  O24  1  0.052  0.894  0.371  1.0
  O  O25  1  0.552  0.106  0.129  1.0
  O  O26  1  0.948  0.106  0.629  1.0
  O  O27  1  0.448  0.894  0.871  1.0
  O  O28  1  0.993  0.747  0.916  1.0
  O  O29  1  0.493  0.253  0.584  1.0
  O  O30  1  0.007  0.253  0.084  1.0
  O  O31  1  0.507  0.747  0.416  1.0
  O  O32  1  0.834  0.025  0.959  1.0
  O  O33  1  0.334  0.975  0.541  1.0
  O  O34  1  0.166  0.975  0.041  1.0
  O  O35  1  0.666  0.025  0.459  1.0
  O  O36  1  0.820  0.777  0.703  1.0
  O  O37  1  0.320  0.223  0.797  1.0
  O  O38  1  0.180  0.223  0.297  1.0
  O  O39  1  0.680  0.777  0.203  1.0
[/CIF]
.
The structure described by La2SiC(NO2)2 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to two equivalent N(1), two equivalent N(2), one O(1), one O(3), one O(4), and two equivalent O(2) atoms. In the second La site, La(2) is bonded in a 9-coordinate geometry to one N(1), one N(2), one O(2), two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms. Si(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. C(1) is bonded in a linear geometry to one N(1) and one N(2) atom. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted single-bond geometry to one La(2), two equivalent La(1), and one C(1) atom. In the second N site, N(2) is bonded in a distorted single-bond geometry to one La(2), two equivalent La(1), and one C(1) atom. There are four inequivalent O sites. In the first O site, O(3) is bonded in a 4-coordinate geometry to one La(1), two equivalent La(2), and one Si(1) atom. In the second O site, O(4) is bonded in a distorted single-bond geometry to one La(1), two equivalent La(2), and one Si(1) atom. In the third O site, O(1) is bonded in a distorted single-bond geometry to one La(1), two equivalent La(2), and one Si(1) atom. In the fourth O site, O(2) is bonded in a 1-coordinate geometry to one La(2), two equivalent La(1), and one Si(1) atom. is represented by the CIF file [CIF]
data_La2SiC(NO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.916
_cell_length_b   6.575
_cell_length_c   6.680
_cell_angle_alpha   74.725
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   547.289
_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
  La  La0  1  0.099  0.588  0.219  1.0
  La  La1  1  0.599  0.412  0.281  1.0
  La  La2  1  0.901  0.412  0.781  1.0
  La  La3  1  0.401  0.588  0.719  1.0
  La  La4  1  0.855  0.970  0.330  1.0
  La  La5  1  0.355  0.030  0.170  1.0
  La  La6  1  0.145  0.030  0.670  1.0
  La  La7  1  0.645  0.970  0.830  1.0
  Si  Si8  1  0.901  0.908  0.813  1.0
  Si  Si9  1  0.401  0.092  0.687  1.0
  Si  Si10  1  0.099  0.092  0.187  1.0
  Si  Si11  1  0.599  0.908  0.313  1.0
  C  C12  1  0.848  0.474  0.269  1.0
  C  C13  1  0.348  0.526  0.231  1.0
  C  C14  1  0.152  0.526  0.731  1.0
  C  C15  1  0.652  0.474  0.769  1.0
  N  N16  1  0.902  0.575  0.362  1.0
  N  N17  1  0.402  0.425  0.138  1.0
  N  N18  1  0.098  0.425  0.638  1.0
  N  N19  1  0.598  0.575  0.862  1.0
  N  N20  1  0.796  0.370  0.176  1.0
  N  N21  1  0.296  0.630  0.324  1.0
  N  N22  1  0.204  0.630  0.824  1.0
  N  N23  1  0.704  0.370  0.676  1.0
  O  O24  1  0.052  0.894  0.371  1.0
  O  O25  1  0.552  0.106  0.129  1.0
  O  O26  1  0.948  0.106  0.629  1.0
  O  O27  1  0.448  0.894  0.871  1.0
  O  O28  1  0.993  0.747  0.916  1.0
  O  O29  1  0.493  0.253  0.584  1.0
  O  O30  1  0.007  0.253  0.084  1.0
  O  O31  1  0.507  0.747  0.416  1.0
  O  O32  1  0.834  0.025  0.959  1.0
  O  O33  1  0.334  0.975  0.541  1.0
  O  O34  1  0.166  0.975  0.041  1.0
  O  O35  1  0.666  0.025  0.459  1.0
  O  O36  1  0.820  0.777  0.703  1.0
  O  O37  1  0.320  0.223  0.797  1.0
  O  O38  1  0.180  0.223  0.297  1.0
  O  O39  1  0.680  0.777  0.203  1.0
[/CIF]
.