The compound described by Li4Sr3(SiN3)2 crystallizes in the monoclinic C2/m space group. Li(1) is bonded to one N(2) and three equivalent N(1) atoms to form distorted LiN4 tetrahedra that share corners with three equivalent Li(1)N4 tetrahedra, corners with three equivalent Si(1)N4 tetrahedra,  an edgeedge with one Si(1)N4 tetrahedra, and edges with two equivalent Li(1)N4 tetrahedra. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 6-coordinate geometry to two equivalent N(2) and four equivalent N(1) atoms. In the second Sr site, Sr(2) is bonded in a 4-coordinate geometry to four equivalent N(1) atoms. Si(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form SiN4 tetrahedra that share corners with six equivalent Li(1)N4 tetrahedra,  an edgeedge with one Si(1)N4 tetrahedra, and edges with two equivalent Li(1)N4 tetrahedra. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 7-coordinate geometry to three equivalent Li(1), one Sr(2), two equivalent Sr(1), and one Si(1) atom. In the second N site, N(2) is bonded in a 4-coordinate geometry to two equivalent Li(1), two equivalent Sr(1), and two equivalent Si(1) atoms. is represented by the CIF card [CIF]
data_Sr3Li4(SiN3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.769
_cell_length_b   5.769
_cell_length_c   6.255
_cell_angle_alpha   89.986
_cell_angle_beta   89.986
_cell_angle_gamma   115.372
_symmetry_Int_Tables_number   1
_cell_volume   188.078
_cell_formula_units_Z   1
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  0.691  0.309  0.500  1.0
  Sr  Sr1  1  0.309  0.691  0.500  1.0
  Sr  Sr2  1  0.500  0.500  0.000  1.0
  Li  Li3  1  0.038  0.686  0.122  1.0
  Li  Li4  1  0.686  0.038  0.122  1.0
  Li  Li5  1  0.962  0.314  0.878  1.0
  Li  Li6  1  0.314  0.962  0.878  1.0
  Si  Si7  1  0.111  0.111  0.328  1.0
  Si  Si8  1  0.889  0.889  0.672  1.0
  N  N9  1  0.051  0.351  0.205  1.0
  N  N10  1  0.351  0.051  0.205  1.0
  N  N11  1  0.949  0.649  0.795  1.0
  N  N12  1  0.649  0.949  0.795  1.0
  N  N13  1  0.819  0.819  0.379  1.0
  N  N14  1  0.181  0.181  0.621  1.0
[/CIF]
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The compound described by Li4Sr3(SiN3)2 crystallizes in the monoclinic C2/m space group. Li(1) is bonded to one N(2) and three equivalent N(1) atoms to form distorted LiN4 tetrahedra that share corners with three equivalent Li(1)N4 tetrahedra, corners with three equivalent Si(1)N4 tetrahedra,  an edgeedge with one Si(1)N4 tetrahedra, and edges with two equivalent Li(1)N4 tetrahedra. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 6-coordinate geometry to two equivalent N(2) and four equivalent N(1) atoms. In the second Sr site, Sr(2) is bonded in a 4-coordinate geometry to four equivalent N(1) atoms. Si(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form SiN4 tetrahedra that share corners with six equivalent Li(1)N4 tetrahedra,  an edgeedge with one Si(1)N4 tetrahedra, and edges with two equivalent Li(1)N4 tetrahedra. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 7-coordinate geometry to three equivalent Li(1), one Sr(2), two equivalent Sr(1), and one Si(1) atom. In the second N site, N(2) is bonded in a 4-coordinate geometry to two equivalent Li(1), two equivalent Sr(1), and two equivalent Si(1) atoms. is represented by the CIF card [CIF]
data_Sr3Li4(SiN3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.769
_cell_length_b   5.769
_cell_length_c   6.255
_cell_angle_alpha   89.986
_cell_angle_beta   89.986
_cell_angle_gamma   115.372
_symmetry_Int_Tables_number   1
_cell_volume   188.078
_cell_formula_units_Z   1
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  0.691  0.309  0.500  1.0
  Sr  Sr1  1  0.309  0.691  0.500  1.0
  Sr  Sr2  1  0.500  0.500  0.000  1.0
  Li  Li3  1  0.038  0.686  0.122  1.0
  Li  Li4  1  0.686  0.038  0.122  1.0
  Li  Li5  1  0.962  0.314  0.878  1.0
  Li  Li6  1  0.314  0.962  0.878  1.0
  Si  Si7  1  0.111  0.111  0.328  1.0
  Si  Si8  1  0.889  0.889  0.672  1.0
  N  N9  1  0.051  0.351  0.205  1.0
  N  N10  1  0.351  0.051  0.205  1.0
  N  N11  1  0.949  0.649  0.795  1.0
  N  N12  1  0.649  0.949  0.795  1.0
  N  N13  1  0.819  0.819  0.379  1.0
  N  N14  1  0.181  0.181  0.621  1.0
[/CIF]
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