The material described by NiGe3O8 is trigonal omega-derived structured and crystallizes in the cubic P4_332 space group. Ni(1) is bonded to six equivalent O(1) atoms to form NiO6 octahedra that share edges with six equivalent Ge(1)O6 octahedra. Ge(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form GeO6 octahedra that share edges with two equivalent Ni(1)O6 octahedra and edges with four equivalent Ge(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Ni(1) and two equivalent Ge(1) atoms. In the second O site, O(2) is bonded in a distorted T-shaped geometry to three equivalent Ge(1) atoms. is represented by the CIF file [CIF]
data_NiGe3O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.120
_cell_length_b   8.120
_cell_length_c   8.120
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   535.470
_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
  Ni  Ni0  1  0.125  0.875  0.375  1.0
  Ni  Ni1  1  0.375  0.125  0.875  1.0
  Ni  Ni2  1  0.625  0.625  0.625  1.0
  Ni  Ni3  1  0.875  0.375  0.125  1.0
  Ge  Ge4  1  0.128  0.122  0.625  1.0
  Ge  Ge5  1  0.125  0.372  0.878  1.0
  Ge  Ge6  1  0.122  0.625  0.128  1.0
  Ge  Ge7  1  0.378  0.375  0.628  1.0
  Ge  Ge8  1  0.375  0.628  0.378  1.0
  Ge  Ge9  1  0.372  0.878  0.125  1.0
  Ge  Ge10  1  0.628  0.378  0.375  1.0
  Ge  Ge11  1  0.625  0.128  0.122  1.0
  Ge  Ge12  1  0.622  0.875  0.872  1.0
  Ge  Ge13  1  0.878  0.125  0.372  1.0
  Ge  Ge14  1  0.875  0.872  0.622  1.0
  Ge  Ge15  1  0.872  0.622  0.875  1.0
  O  O16  1  0.115  0.108  0.387  1.0
  O  O17  1  0.113  0.885  0.608  1.0
  O  O18  1  0.111  0.611  0.889  1.0
  O  O19  1  0.142  0.135  0.863  1.0
  O  O20  1  0.108  0.387  0.115  1.0
  O  O21  1  0.139  0.361  0.639  1.0
  O  O22  1  0.137  0.642  0.365  1.0
  O  O23  1  0.135  0.863  0.142  1.0
  O  O24  1  0.365  0.137  0.642  1.0
  O  O25  1  0.363  0.358  0.865  1.0
  O  O26  1  0.361  0.639  0.139  1.0
  O  O27  1  0.392  0.613  0.615  1.0
  O  O28  1  0.358  0.865  0.363  1.0
  O  O29  1  0.389  0.389  0.389  1.0
  O  O30  1  0.387  0.115  0.108  1.0
  O  O31  1  0.385  0.892  0.887  1.0
  O  O32  1  0.615  0.392  0.613  1.0
  O  O33  1  0.613  0.615  0.392  1.0
  O  O34  1  0.611  0.889  0.111  1.0
  O  O35  1  0.642  0.365  0.137  1.0
  O  O36  1  0.608  0.113  0.885  1.0
  O  O37  1  0.639  0.139  0.361  1.0
  O  O38  1  0.637  0.858  0.635  1.0
  O  O39  1  0.635  0.637  0.858  1.0
  O  O40  1  0.865  0.363  0.358  1.0
  O  O41  1  0.863  0.142  0.135  1.0
  O  O42  1  0.861  0.861  0.861  1.0
  O  O43  1  0.892  0.887  0.385  1.0
  O  O44  1  0.858  0.635  0.637  1.0
  O  O45  1  0.889  0.111  0.611  1.0
  O  O46  1  0.887  0.385  0.892  1.0
  O  O47  1  0.885  0.608  0.113  1.0
[/CIF]
.
The material described by NiGe3O8 is trigonal omega-derived structured and crystallizes in the cubic P4_332 space group. Ni(1) is bonded to six equivalent O(1) atoms to form NiO6 octahedra that share edges with six equivalent Ge(1)O6 octahedra. Ge(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form GeO6 octahedra that share edges with two equivalent Ni(1)O6 octahedra and edges with four equivalent Ge(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Ni(1) and two equivalent Ge(1) atoms. In the second O site, O(2) is bonded in a distorted T-shaped geometry to three equivalent Ge(1) atoms. is represented by the CIF file [CIF]
data_NiGe3O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.120
_cell_length_b   8.120
_cell_length_c   8.120
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   535.470
_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
  Ni  Ni0  1  0.125  0.875  0.375  1.0
  Ni  Ni1  1  0.375  0.125  0.875  1.0
  Ni  Ni2  1  0.625  0.625  0.625  1.0
  Ni  Ni3  1  0.875  0.375  0.125  1.0
  Ge  Ge4  1  0.128  0.122  0.625  1.0
  Ge  Ge5  1  0.125  0.372  0.878  1.0
  Ge  Ge6  1  0.122  0.625  0.128  1.0
  Ge  Ge7  1  0.378  0.375  0.628  1.0
  Ge  Ge8  1  0.375  0.628  0.378  1.0
  Ge  Ge9  1  0.372  0.878  0.125  1.0
  Ge  Ge10  1  0.628  0.378  0.375  1.0
  Ge  Ge11  1  0.625  0.128  0.122  1.0
  Ge  Ge12  1  0.622  0.875  0.872  1.0
  Ge  Ge13  1  0.878  0.125  0.372  1.0
  Ge  Ge14  1  0.875  0.872  0.622  1.0
  Ge  Ge15  1  0.872  0.622  0.875  1.0
  O  O16  1  0.115  0.108  0.387  1.0
  O  O17  1  0.113  0.885  0.608  1.0
  O  O18  1  0.111  0.611  0.889  1.0
  O  O19  1  0.142  0.135  0.863  1.0
  O  O20  1  0.108  0.387  0.115  1.0
  O  O21  1  0.139  0.361  0.639  1.0
  O  O22  1  0.137  0.642  0.365  1.0
  O  O23  1  0.135  0.863  0.142  1.0
  O  O24  1  0.365  0.137  0.642  1.0
  O  O25  1  0.363  0.358  0.865  1.0
  O  O26  1  0.361  0.639  0.139  1.0
  O  O27  1  0.392  0.613  0.615  1.0
  O  O28  1  0.358  0.865  0.363  1.0
  O  O29  1  0.389  0.389  0.389  1.0
  O  O30  1  0.387  0.115  0.108  1.0
  O  O31  1  0.385  0.892  0.887  1.0
  O  O32  1  0.615  0.392  0.613  1.0
  O  O33  1  0.613  0.615  0.392  1.0
  O  O34  1  0.611  0.889  0.111  1.0
  O  O35  1  0.642  0.365  0.137  1.0
  O  O36  1  0.608  0.113  0.885  1.0
  O  O37  1  0.639  0.139  0.361  1.0
  O  O38  1  0.637  0.858  0.635  1.0
  O  O39  1  0.635  0.637  0.858  1.0
  O  O40  1  0.865  0.363  0.358  1.0
  O  O41  1  0.863  0.142  0.135  1.0
  O  O42  1  0.861  0.861  0.861  1.0
  O  O43  1  0.892  0.887  0.385  1.0
  O  O44  1  0.858  0.635  0.637  1.0
  O  O45  1  0.889  0.111  0.611  1.0
  O  O46  1  0.887  0.385  0.892  1.0
  O  O47  1  0.885  0.608  0.113  1.0
[/CIF]
.