The crystal structure described by SrGe7N10 crystallizes in the monoclinic Pc space group. Sr(1) is bonded in a 5-coordinate geometry to one N(2), one N(4), one N(7), and two equivalent N(1) atoms. There are seven inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one N(1), one N(2), one N(3), and one N(6) atom to form a mixture of corner and edge-sharing GeN4 tetrahedra. In the second Ge site, Ge(2) is bonded to one N(2), one N(3), one N(4), and one N(6) atom to form a mixture of corner and edge-sharing GeN4 tetrahedra. In the third Ge site, Ge(3) is bonded to one N(4), one N(5), one N(7), and one N(8) atom to form corner-sharing GeN4 tetrahedra. In the fourth Ge site, Ge(4) is bonded to one N(10), one N(2), one N(7), and one N(9) atom to form corner-sharing GeN4 tetrahedra. In the fifth Ge site, Ge(5) is bonded to one N(1), one N(7), one N(8), and one N(9) atom to form corner-sharing GeN4 tetrahedra. In the sixth Ge site, Ge(6) is bonded to one N(10), one N(3), one N(5), and one N(8) atom to form corner-sharing GeN4 tetrahedra. In the seventh Ge site, Ge(7) is bonded to one N(10), one N(5), one N(6), and one N(9) atom to form corner-sharing GeN4 tetrahedra. There are ten inequivalent N sites. In the first N site, N(9) is bonded in a trigonal non-coplanar geometry to one Ge(4), one Ge(5), and one Ge(7) atom. In the second N site, N(10) is bonded in a trigonal planar geometry to one Ge(4), one Ge(6), and one Ge(7) atom. In the third N site, N(1) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Ge(1), and one Ge(5) atom. In the fourth N site, N(2) is bonded in a 4-coordinate geometry to one Sr(1), one Ge(1), one Ge(2), and one Ge(4) atom. In the fifth N site, N(3) is bonded in a distorted trigonal non-coplanar geometry to one Ge(1), one Ge(2), and one Ge(6) atom. In the sixth N site, N(4) is bonded in a distorted trigonal non-coplanar geometry to one Sr(1), one Ge(2), and one Ge(3) atom. In the seventh N site, N(5) is bonded in a trigonal planar geometry to one Ge(3), one Ge(6), and one Ge(7) atom. In the eighth N site, N(6) is bonded in a trigonal planar geometry to one Ge(1), one Ge(2), and one Ge(7) atom. In the ninth N site, N(7) is bonded in a distorted trigonal pyramidal geometry to one Sr(1), one Ge(3), one Ge(4), and one Ge(5) atom. In the tenth N site, N(8) is bonded in a trigonal planar geometry to one Ge(3), one Ge(5), and one Ge(6) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrGe7N10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.265
_cell_length_b   7.167
_cell_length_c   10.242
_cell_angle_alpha   90.000
_cell_angle_beta   105.471
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   513.894
_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
  Sr  Sr0  1  0.915  0.024  0.635  1.0
  Sr  Sr1  1  0.915  0.976  0.135  1.0
  Ge  Ge2  1  0.545  0.971  0.827  1.0
  Ge  Ge3  1  0.545  0.029  0.327  1.0
  Ge  Ge4  1  0.349  0.028  0.018  1.0
  Ge  Ge5  1  0.349  0.972  0.518  1.0
  Ge  Ge6  1  0.112  0.393  0.075  1.0
  Ge  Ge7  1  0.112  0.607  0.575  1.0
  Ge  Ge8  1  0.666  0.365  0.993  1.0
  Ge  Ge9  1  0.666  0.635  0.493  1.0
  Ge  Ge10  1  0.851  0.627  0.813  1.0
  Ge  Ge11  1  0.851  0.373  0.313  1.0
  Ge  Ge12  1  0.297  0.622  0.884  1.0
  Ge  Ge13  1  0.297  0.378  0.384  1.0
  Ge  Ge14  1  0.486  0.370  0.689  1.0
  Ge  Ge15  1  0.486  0.630  0.189  1.0
  N  N16  1  0.773  0.860  0.842  1.0
  N  N17  1  0.773  0.140  0.342  1.0
  N  N18  1  0.573  0.127  0.980  1.0
  N  N19  1  0.573  0.873  0.480  1.0
  N  N20  1  0.318  0.875  0.862  1.0
  N  N21  1  0.318  0.125  0.362  1.0
  N  N22  1  0.142  0.154  0.027  1.0
  N  N23  1  0.142  0.846  0.527  1.0
  N  N24  1  0.284  0.498  0.725  1.0
  N  N25  1  0.284  0.502  0.225  1.0
  N  N26  1  0.459  0.116  0.672  1.0
  N  N27  1  0.459  0.884  0.172  1.0
  N  N28  1  0.887  0.372  0.134  1.0
  N  N29  1  0.887  0.628  0.634  1.0
  N  N30  1  0.080  0.584  0.944  1.0
  N  N31  1  0.080  0.416  0.444  1.0
  N  N32  1  0.708  0.415  0.825  1.0
  N  N33  1  0.708  0.585  0.325  1.0
  N  N34  1  0.498  0.539  0.024  1.0
  N  N35  1  0.498  0.461  0.524  1.0
[/CIF]
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The crystal structure described by SrGe7N10 crystallizes in the monoclinic Pc space group. Sr(1) is bonded in a 5-coordinate geometry to one N(2), one N(4), one N(7), and two equivalent N(1) atoms. There are seven inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one N(1), one N(2), one N(3), and one N(6) atom to form a mixture of corner and edge-sharing GeN4 tetrahedra. In the second Ge site, Ge(2) is bonded to one N(2), one N(3), one N(4), and one N(6) atom to form a mixture of corner and edge-sharing GeN4 tetrahedra. In the third Ge site, Ge(3) is bonded to one N(4), one N(5), one N(7), and one N(8) atom to form corner-sharing GeN4 tetrahedra. In the fourth Ge site, Ge(4) is bonded to one N(10), one N(2), one N(7), and one N(9) atom to form corner-sharing GeN4 tetrahedra. In the fifth Ge site, Ge(5) is bonded to one N(1), one N(7), one N(8), and one N(9) atom to form corner-sharing GeN4 tetrahedra. In the sixth Ge site, Ge(6) is bonded to one N(10), one N(3), one N(5), and one N(8) atom to form corner-sharing GeN4 tetrahedra. In the seventh Ge site, Ge(7) is bonded to one N(10), one N(5), one N(6), and one N(9) atom to form corner-sharing GeN4 tetrahedra. There are ten inequivalent N sites. In the first N site, N(9) is bonded in a trigonal non-coplanar geometry to one Ge(4), one Ge(5), and one Ge(7) atom. In the second N site, N(10) is bonded in a trigonal planar geometry to one Ge(4), one Ge(6), and one Ge(7) atom. In the third N site, N(1) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Ge(1), and one Ge(5) atom. In the fourth N site, N(2) is bonded in a 4-coordinate geometry to one Sr(1), one Ge(1), one Ge(2), and one Ge(4) atom. In the fifth N site, N(3) is bonded in a distorted trigonal non-coplanar geometry to one Ge(1), one Ge(2), and one Ge(6) atom. In the sixth N site, N(4) is bonded in a distorted trigonal non-coplanar geometry to one Sr(1), one Ge(2), and one Ge(3) atom. In the seventh N site, N(5) is bonded in a trigonal planar geometry to one Ge(3), one Ge(6), and one Ge(7) atom. In the eighth N site, N(6) is bonded in a trigonal planar geometry to one Ge(1), one Ge(2), and one Ge(7) atom. In the ninth N site, N(7) is bonded in a distorted trigonal pyramidal geometry to one Sr(1), one Ge(3), one Ge(4), and one Ge(5) atom. In the tenth N site, N(8) is bonded in a trigonal planar geometry to one Ge(3), one Ge(5), and one Ge(6) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrGe7N10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.265
_cell_length_b   7.167
_cell_length_c   10.242
_cell_angle_alpha   90.000
_cell_angle_beta   105.471
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   513.894
_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
  Sr  Sr0  1  0.915  0.024  0.635  1.0
  Sr  Sr1  1  0.915  0.976  0.135  1.0
  Ge  Ge2  1  0.545  0.971  0.827  1.0
  Ge  Ge3  1  0.545  0.029  0.327  1.0
  Ge  Ge4  1  0.349  0.028  0.018  1.0
  Ge  Ge5  1  0.349  0.972  0.518  1.0
  Ge  Ge6  1  0.112  0.393  0.075  1.0
  Ge  Ge7  1  0.112  0.607  0.575  1.0
  Ge  Ge8  1  0.666  0.365  0.993  1.0
  Ge  Ge9  1  0.666  0.635  0.493  1.0
  Ge  Ge10  1  0.851  0.627  0.813  1.0
  Ge  Ge11  1  0.851  0.373  0.313  1.0
  Ge  Ge12  1  0.297  0.622  0.884  1.0
  Ge  Ge13  1  0.297  0.378  0.384  1.0
  Ge  Ge14  1  0.486  0.370  0.689  1.0
  Ge  Ge15  1  0.486  0.630  0.189  1.0
  N  N16  1  0.773  0.860  0.842  1.0
  N  N17  1  0.773  0.140  0.342  1.0
  N  N18  1  0.573  0.127  0.980  1.0
  N  N19  1  0.573  0.873  0.480  1.0
  N  N20  1  0.318  0.875  0.862  1.0
  N  N21  1  0.318  0.125  0.362  1.0
  N  N22  1  0.142  0.154  0.027  1.0
  N  N23  1  0.142  0.846  0.527  1.0
  N  N24  1  0.284  0.498  0.725  1.0
  N  N25  1  0.284  0.502  0.225  1.0
  N  N26  1  0.459  0.116  0.672  1.0
  N  N27  1  0.459  0.884  0.172  1.0
  N  N28  1  0.887  0.372  0.134  1.0
  N  N29  1  0.887  0.628  0.634  1.0
  N  N30  1  0.080  0.584  0.944  1.0
  N  N31  1  0.080  0.416  0.444  1.0
  N  N32  1  0.708  0.415  0.825  1.0
  N  N33  1  0.708  0.585  0.325  1.0
  N  N34  1  0.498  0.539  0.024  1.0
  N  N35  1  0.498  0.461  0.524  1.0
[/CIF]
.