The compound described by CrGeN2 is Enargite-like structured and crystallizes in the orthorhombic Pna2_1 space group. Cr(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form CrN4 tetrahedra that share corners with four equivalent Cr(1)N4 tetrahedra and corners with eight equivalent Ge(1)N4 tetrahedra. Ge(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form GeN4 tetrahedra that share corners with four equivalent Ge(1)N4 tetrahedra and corners with eight equivalent Cr(1)N4 tetrahedra. There are two inequivalent N sites. In the first N site, N(1) is bonded to two equivalent Cr(1) and two equivalent Ge(1) atoms to form corner-sharing NCr2Ge2 tetrahedra. In the second N site, N(2) is bonded to two equivalent Cr(1) and two equivalent Ge(1) atoms to form corner-sharing NCr2Ge2 tetrahedra. is represented by the CIF card [CIF]
data_CrGeN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.502
_cell_length_b   6.675
_cell_length_c   5.284
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   194.042
_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
  Cr  Cr0  1  0.571  0.883  0.003  1.0
  Cr  Cr1  1  0.429  0.117  0.503  1.0
  Cr  Cr2  1  0.929  0.383  0.503  1.0
  Cr  Cr3  1  0.071  0.617  0.003  1.0
  Ge  Ge4  1  0.568  0.377  1.000  1.0
  Ge  Ge5  1  0.432  0.623  0.500  1.0
  Ge  Ge6  1  0.932  0.877  0.500  1.0
  Ge  Ge7  1  0.068  0.123  1.000  1.0
  N  N8  1  0.570  0.390  0.358  1.0
  N  N9  1  0.430  0.610  0.858  1.0
  N  N10  1  0.930  0.890  0.858  1.0
  N  N11  1  0.070  0.110  0.358  1.0
  N  N12  1  0.603  0.855  0.390  1.0
  N  N13  1  0.397  0.145  0.890  1.0
  N  N14  1  0.897  0.355  0.890  1.0
  N  N15  1  0.103  0.645  0.390  1.0
[/CIF]
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The compound described by CrGeN2 is Enargite-like structured and crystallizes in the orthorhombic Pna2_1 space group. Cr(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form CrN4 tetrahedra that share corners with four equivalent Cr(1)N4 tetrahedra and corners with eight equivalent Ge(1)N4 tetrahedra. Ge(1) is bonded to two equivalent N(1) and two equivalent N(2) atoms to form GeN4 tetrahedra that share corners with four equivalent Ge(1)N4 tetrahedra and corners with eight equivalent Cr(1)N4 tetrahedra. There are two inequivalent N sites. In the first N site, N(1) is bonded to two equivalent Cr(1) and two equivalent Ge(1) atoms to form corner-sharing NCr2Ge2 tetrahedra. In the second N site, N(2) is bonded to two equivalent Cr(1) and two equivalent Ge(1) atoms to form corner-sharing NCr2Ge2 tetrahedra. is represented by the CIF card [CIF]
data_CrGeN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.502
_cell_length_b   6.675
_cell_length_c   5.284
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   194.042
_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
  Cr  Cr0  1  0.571  0.883  0.003  1.0
  Cr  Cr1  1  0.429  0.117  0.503  1.0
  Cr  Cr2  1  0.929  0.383  0.503  1.0
  Cr  Cr3  1  0.071  0.617  0.003  1.0
  Ge  Ge4  1  0.568  0.377  1.000  1.0
  Ge  Ge5  1  0.432  0.623  0.500  1.0
  Ge  Ge6  1  0.932  0.877  0.500  1.0
  Ge  Ge7  1  0.068  0.123  1.000  1.0
  N  N8  1  0.570  0.390  0.358  1.0
  N  N9  1  0.430  0.610  0.858  1.0
  N  N10  1  0.930  0.890  0.858  1.0
  N  N11  1  0.070  0.110  0.358  1.0
  N  N12  1  0.603  0.855  0.390  1.0
  N  N13  1  0.397  0.145  0.890  1.0
  N  N14  1  0.897  0.355  0.890  1.0
  N  N15  1  0.103  0.645  0.390  1.0
[/CIF]
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