The crystal structure described by Ge3N4 crystallizes in the trigonal P31c space group. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one N(2), one N(3), and two equivalent N(1) atoms to form corner-sharing GeN4 tetrahedra. In the second Ge site, Ge(2) is bonded to one N(1), one N(4), and two equivalent N(2) atoms to form corner-sharing GeN4 tetrahedra. There are four inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Ge(2) and two equivalent Ge(1) atoms. In the second N site, N(2) is bonded in a trigonal planar geometry to one Ge(1) and two equivalent Ge(2) atoms. In the third N site, N(3) is bonded in a trigonal planar geometry to three equivalent Ge(1) atoms. In the fourth N site, N(4) is bonded in a trigonal planar geometry to three equivalent Ge(2) atoms. is represented by the CIF card [CIF]
data_Ge3N4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.223
_cell_length_b   8.223
_cell_length_c   5.946
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   348.220
_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
  Ge  Ge0  1  0.168  0.253  0.024  1.0
  Ge  Ge1  1  0.489  0.571  0.727  1.0
  Ge  Ge2  1  0.253  0.168  0.524  1.0
  Ge  Ge3  1  0.082  0.511  0.727  1.0
  Ge  Ge4  1  0.918  0.429  0.227  1.0
  Ge  Ge5  1  0.832  0.086  0.524  1.0
  Ge  Ge6  1  0.747  0.914  0.024  1.0
  Ge  Ge7  1  0.511  0.082  0.227  1.0
  Ge  Ge8  1  0.429  0.918  0.727  1.0
  Ge  Ge9  1  0.914  0.747  0.524  1.0
  Ge  Ge10  1  0.571  0.489  0.227  1.0
  Ge  Ge11  1  0.086  0.832  0.024  1.0
  N  N12  1  0.680  0.997  0.770  1.0
  N  N13  1  0.003  0.683  0.770  1.0
  N  N14  1  0.612  0.656  0.999  1.0
  N  N15  1  0.045  0.388  0.999  1.0
  N  N16  1  0.320  0.317  0.270  1.0
  N  N17  1  0.955  0.344  0.499  1.0
  N  N18  1  0.683  0.003  0.270  1.0
  N  N19  1  0.000  0.000  0.024  1.0
  N  N20  1  0.344  0.955  0.999  1.0
  N  N21  1  0.317  0.320  0.770  1.0
  N  N22  1  0.997  0.680  0.270  1.0
  N  N23  1  0.656  0.612  0.499  1.0
  N  N24  1  0.000  0.000  0.524  1.0
  N  N25  1  0.667  0.333  0.165  1.0
  N  N26  1  0.388  0.045  0.499  1.0
  N  N27  1  0.333  0.667  0.665  1.0
[/CIF]
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The crystal structure described by Ge3N4 crystallizes in the trigonal P31c space group. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one N(2), one N(3), and two equivalent N(1) atoms to form corner-sharing GeN4 tetrahedra. In the second Ge site, Ge(2) is bonded to one N(1), one N(4), and two equivalent N(2) atoms to form corner-sharing GeN4 tetrahedra. There are four inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Ge(2) and two equivalent Ge(1) atoms. In the second N site, N(2) is bonded in a trigonal planar geometry to one Ge(1) and two equivalent Ge(2) atoms. In the third N site, N(3) is bonded in a trigonal planar geometry to three equivalent Ge(1) atoms. In the fourth N site, N(4) is bonded in a trigonal planar geometry to three equivalent Ge(2) atoms. is represented by the CIF card [CIF]
data_Ge3N4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.223
_cell_length_b   8.223
_cell_length_c   5.946
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   348.220
_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
  Ge  Ge0  1  0.168  0.253  0.024  1.0
  Ge  Ge1  1  0.489  0.571  0.727  1.0
  Ge  Ge2  1  0.253  0.168  0.524  1.0
  Ge  Ge3  1  0.082  0.511  0.727  1.0
  Ge  Ge4  1  0.918  0.429  0.227  1.0
  Ge  Ge5  1  0.832  0.086  0.524  1.0
  Ge  Ge6  1  0.747  0.914  0.024  1.0
  Ge  Ge7  1  0.511  0.082  0.227  1.0
  Ge  Ge8  1  0.429  0.918  0.727  1.0
  Ge  Ge9  1  0.914  0.747  0.524  1.0
  Ge  Ge10  1  0.571  0.489  0.227  1.0
  Ge  Ge11  1  0.086  0.832  0.024  1.0
  N  N12  1  0.680  0.997  0.770  1.0
  N  N13  1  0.003  0.683  0.770  1.0
  N  N14  1  0.612  0.656  0.999  1.0
  N  N15  1  0.045  0.388  0.999  1.0
  N  N16  1  0.320  0.317  0.270  1.0
  N  N17  1  0.955  0.344  0.499  1.0
  N  N18  1  0.683  0.003  0.270  1.0
  N  N19  1  0.000  0.000  0.024  1.0
  N  N20  1  0.344  0.955  0.999  1.0
  N  N21  1  0.317  0.320  0.770  1.0
  N  N22  1  0.997  0.680  0.270  1.0
  N  N23  1  0.656  0.612  0.499  1.0
  N  N24  1  0.000  0.000  0.524  1.0
  N  N25  1  0.667  0.333  0.165  1.0
  N  N26  1  0.388  0.045  0.499  1.0
  N  N27  1  0.333  0.667  0.665  1.0
[/CIF]
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