The structure described by Sr4(CN2)3C crystallizes in the hexagonal P6_3/mmc space group. The structure consists of two 02329_fluka atoms inside a Sr4(CN2)3 framework. In the Sr4(CN2)3 framework, there are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 6-coordinate geometry to six equivalent N(1) atoms. In the second Sr site, Sr(2) is bonded in a 4-coordinate geometry to four equivalent N(1) atoms. C(1) is bonded in a linear geometry to two equivalent N(1) atoms. N(1) is bonded to one Sr(1), two equivalent Sr(2), and one C(1) atom to form a mixture of corner and edge-sharing NSr3C tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr2C2N3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.191
_cell_length_b   10.191
_cell_length_c   6.932
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   623.429
_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  0.333  0.667  0.750  1.0
  Sr  Sr1  1  0.667  0.333  0.250  1.0
  Sr  Sr2  1  0.198  0.802  0.250  1.0
  Sr  Sr3  1  0.198  0.396  0.250  1.0
  Sr  Sr4  1  0.604  0.802  0.250  1.0
  Sr  Sr5  1  0.802  0.198  0.750  1.0
  Sr  Sr6  1  0.802  0.604  0.750  1.0
  Sr  Sr7  1  0.396  0.198  0.750  1.0
  C  C8  1  0.500  0.500  0.500  1.0
  C  C9  1  0.500  0.000  0.500  1.0
  C  C10  1  0.000  0.500  0.500  1.0
  C  C11  1  0.500  0.500  0.000  1.0
  C  C12  1  0.500  0.000  0.000  1.0
  C  C13  1  0.000  0.500  0.000  1.0
  C  C14  1  0.000  0.000  0.250  1.0
  C  C15  1  0.000  0.000  0.750  1.0
  N  N16  1  0.569  0.431  0.529  1.0
  N  N17  1  0.569  0.139  0.529  1.0
  N  N18  1  0.861  0.431  0.529  1.0
  N  N19  1  0.431  0.569  0.471  1.0
  N  N20  1  0.431  0.861  0.471  1.0
  N  N21  1  0.139  0.569  0.471  1.0
  N  N22  1  0.431  0.569  0.029  1.0
  N  N23  1  0.431  0.861  0.029  1.0
  N  N24  1  0.139  0.569  0.029  1.0
  N  N25  1  0.569  0.431  0.971  1.0
  N  N26  1  0.569  0.139  0.971  1.0
  N  N27  1  0.861  0.431  0.971  1.0
[/CIF]
.
The structure described by Sr4(CN2)3C crystallizes in the hexagonal P6_3/mmc space group. The structure consists of two 02329_fluka atoms inside a Sr4(CN2)3 framework. In the Sr4(CN2)3 framework, there are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 6-coordinate geometry to six equivalent N(1) atoms. In the second Sr site, Sr(2) is bonded in a 4-coordinate geometry to four equivalent N(1) atoms. C(1) is bonded in a linear geometry to two equivalent N(1) atoms. N(1) is bonded to one Sr(1), two equivalent Sr(2), and one C(1) atom to form a mixture of corner and edge-sharing NSr3C tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr2C2N3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.191
_cell_length_b   10.191
_cell_length_c   6.932
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   623.429
_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  0.333  0.667  0.750  1.0
  Sr  Sr1  1  0.667  0.333  0.250  1.0
  Sr  Sr2  1  0.198  0.802  0.250  1.0
  Sr  Sr3  1  0.198  0.396  0.250  1.0
  Sr  Sr4  1  0.604  0.802  0.250  1.0
  Sr  Sr5  1  0.802  0.198  0.750  1.0
  Sr  Sr6  1  0.802  0.604  0.750  1.0
  Sr  Sr7  1  0.396  0.198  0.750  1.0
  C  C8  1  0.500  0.500  0.500  1.0
  C  C9  1  0.500  0.000  0.500  1.0
  C  C10  1  0.000  0.500  0.500  1.0
  C  C11  1  0.500  0.500  0.000  1.0
  C  C12  1  0.500  0.000  0.000  1.0
  C  C13  1  0.000  0.500  0.000  1.0
  C  C14  1  0.000  0.000  0.250  1.0
  C  C15  1  0.000  0.000  0.750  1.0
  N  N16  1  0.569  0.431  0.529  1.0
  N  N17  1  0.569  0.139  0.529  1.0
  N  N18  1  0.861  0.431  0.529  1.0
  N  N19  1  0.431  0.569  0.471  1.0
  N  N20  1  0.431  0.861  0.471  1.0
  N  N21  1  0.139  0.569  0.471  1.0
  N  N22  1  0.431  0.569  0.029  1.0
  N  N23  1  0.431  0.861  0.029  1.0
  N  N24  1  0.139  0.569  0.029  1.0
  N  N25  1  0.569  0.431  0.971  1.0
  N  N26  1  0.569  0.139  0.971  1.0
  N  N27  1  0.861  0.431  0.971  1.0
[/CIF]
.