The compound described by NaGa(GeO3)2 is Esseneite structured and crystallizes in the monoclinic C2/c space group. Na(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. Ga(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form GaO6 octahedra that share corners with six equivalent Ge(1)O4 tetrahedra and edges with two equivalent Ga(1)O6 octahedra. Ge(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form GeO4 tetrahedra that share corners with three equivalent Ga(1)O6 octahedra and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 40-62°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Na(1), one Ga(1), and one Ge(1) atom. In the second O site, O(2) is bonded to one Na(1), two equivalent Ga(1), and one Ge(1) atom to form a mixture of distorted edge and corner-sharing ONaGa2Ge tetrahedra. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Na(1) and two equivalent Ge(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_NaGa(GeO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.741
_cell_length_b   6.741
_cell_length_c   5.559
_cell_angle_alpha   76.797
_cell_angle_beta   76.797
_cell_angle_gamma   83.086
_symmetry_Int_Tables_number   1
_cell_volume   238.794
_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
  Na  Na0  1  0.302  0.698  0.750  1.0
  Na  Na1  1  0.698  0.302  0.250  1.0
  Ga  Ga2  1  0.905  0.095  0.750  1.0
  Ga  Ga3  1  0.095  0.905  0.250  1.0
  Ge  Ge4  1  0.807  0.616  0.724  1.0
  Ge  Ge5  1  0.384  0.193  0.776  1.0
  Ge  Ge6  1  0.193  0.384  0.276  1.0
  Ge  Ge7  1  0.616  0.807  0.224  1.0
  O  O8  1  0.917  0.369  0.804  1.0
  O  O9  1  0.631  0.083  0.696  1.0
  O  O10  1  0.083  0.631  0.196  1.0
  O  O11  1  0.369  0.917  0.304  1.0
  O  O12  1  0.977  0.816  0.627  1.0
  O  O13  1  0.184  0.023  0.873  1.0
  O  O14  1  0.023  0.184  0.373  1.0
  O  O15  1  0.816  0.977  0.127  1.0
  O  O16  1  0.647  0.628  0.508  1.0
  O  O17  1  0.372  0.353  0.992  1.0
  O  O18  1  0.353  0.372  0.492  1.0
  O  O19  1  0.628  0.647  0.008  1.0
[/CIF]
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The compound described by NaGa(GeO3)2 is Esseneite structured and crystallizes in the monoclinic C2/c space group. Na(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. Ga(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form GaO6 octahedra that share corners with six equivalent Ge(1)O4 tetrahedra and edges with two equivalent Ga(1)O6 octahedra. Ge(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form GeO4 tetrahedra that share corners with three equivalent Ga(1)O6 octahedra and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 40-62°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Na(1), one Ga(1), and one Ge(1) atom. In the second O site, O(2) is bonded to one Na(1), two equivalent Ga(1), and one Ge(1) atom to form a mixture of distorted edge and corner-sharing ONaGa2Ge tetrahedra. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Na(1) and two equivalent Ge(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_NaGa(GeO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.741
_cell_length_b   6.741
_cell_length_c   5.559
_cell_angle_alpha   76.797
_cell_angle_beta   76.797
_cell_angle_gamma   83.086
_symmetry_Int_Tables_number   1
_cell_volume   238.794
_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
  Na  Na0  1  0.302  0.698  0.750  1.0
  Na  Na1  1  0.698  0.302  0.250  1.0
  Ga  Ga2  1  0.905  0.095  0.750  1.0
  Ga  Ga3  1  0.095  0.905  0.250  1.0
  Ge  Ge4  1  0.807  0.616  0.724  1.0
  Ge  Ge5  1  0.384  0.193  0.776  1.0
  Ge  Ge6  1  0.193  0.384  0.276  1.0
  Ge  Ge7  1  0.616  0.807  0.224  1.0
  O  O8  1  0.917  0.369  0.804  1.0
  O  O9  1  0.631  0.083  0.696  1.0
  O  O10  1  0.083  0.631  0.196  1.0
  O  O11  1  0.369  0.917  0.304  1.0
  O  O12  1  0.977  0.816  0.627  1.0
  O  O13  1  0.184  0.023  0.873  1.0
  O  O14  1  0.023  0.184  0.373  1.0
  O  O15  1  0.816  0.977  0.127  1.0
  O  O16  1  0.647  0.628  0.508  1.0
  O  O17  1  0.372  0.353  0.992  1.0
  O  O18  1  0.353  0.372  0.492  1.0
  O  O19  1  0.628  0.647  0.008  1.0
[/CIF]
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