The compound described by Na2BeGeO4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), and four equivalent O(4) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms. Be(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form BeO4 tetrahedra that share corners with four equivalent Ge(1)O4 tetrahedra and  an edgeedge with one Be(1)O4 tetrahedra. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GeO4 tetrahedra that share corners with four equivalent Be(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), two equivalent Be(1), and one Ge(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Na(1), two equivalent Na(2), one Be(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Na(1), two equivalent Na(2), one Be(1), and one Ge(1) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Na(2), four equivalent Na(1), and one Ge(1) atom. is represented by the CIF file [CIF]
data_Na2BeGeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.087
_cell_length_b   7.284
_cell_length_c   10.253
_cell_angle_alpha   89.567
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   379.864
_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
  Na  Na0  1  0.207  0.999  0.892  1.0
  Na  Na1  1  0.707  0.001  0.608  1.0
  Na  Na2  1  0.793  0.001  0.108  1.0
  Na  Na3  1  0.293  0.999  0.392  1.0
  Na  Na4  1  0.319  0.262  0.139  1.0
  Na  Na5  1  0.819  0.738  0.361  1.0
  Na  Na6  1  0.681  0.738  0.861  1.0
  Na  Na7  1  0.181  0.262  0.639  1.0
  Be  Be8  1  0.656  0.500  0.587  1.0
  Be  Be9  1  0.344  0.500  0.413  1.0
  Be  Be10  1  0.844  0.500  0.087  1.0
  Be  Be11  1  0.156  0.500  0.913  1.0
  Ge  Ge12  1  0.155  0.720  0.659  1.0
  Ge  Ge13  1  0.655  0.280  0.841  1.0
  Ge  Ge14  1  0.845  0.280  0.341  1.0
  Ge  Ge15  1  0.345  0.720  0.159  1.0
  O  O16  1  0.168  0.547  0.074  1.0
  O  O17  1  0.668  0.453  0.426  1.0
  O  O18  1  0.832  0.453  0.926  1.0
  O  O19  1  0.332  0.547  0.574  1.0
  O  O20  1  0.314  0.314  0.875  1.0
  O  O21  1  0.186  0.314  0.375  1.0
  O  O22  1  0.814  0.686  0.625  1.0
  O  O23  1  0.686  0.686  0.125  1.0
  O  O24  1  0.283  0.685  0.329  1.0
  O  O25  1  0.783  0.315  0.171  1.0
  O  O26  1  0.717  0.315  0.671  1.0
  O  O27  1  0.217  0.685  0.829  1.0
  O  O28  1  0.238  0.948  0.622  1.0
  O  O29  1  0.738  0.052  0.878  1.0
  O  O30  1  0.762  0.052  0.378  1.0
  O  O31  1  0.262  0.948  0.122  1.0
[/CIF]
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The compound described by Na2BeGeO4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), and four equivalent O(4) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms. Be(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form BeO4 tetrahedra that share corners with four equivalent Ge(1)O4 tetrahedra and  an edgeedge with one Be(1)O4 tetrahedra. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GeO4 tetrahedra that share corners with four equivalent Be(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), two equivalent Be(1), and one Ge(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Na(1), two equivalent Na(2), one Be(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Na(1), two equivalent Na(2), one Be(1), and one Ge(1) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Na(2), four equivalent Na(1), and one Ge(1) atom. is represented by the CIF file [CIF]
data_Na2BeGeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.087
_cell_length_b   7.284
_cell_length_c   10.253
_cell_angle_alpha   89.567
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   379.864
_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
  Na  Na0  1  0.207  0.999  0.892  1.0
  Na  Na1  1  0.707  0.001  0.608  1.0
  Na  Na2  1  0.793  0.001  0.108  1.0
  Na  Na3  1  0.293  0.999  0.392  1.0
  Na  Na4  1  0.319  0.262  0.139  1.0
  Na  Na5  1  0.819  0.738  0.361  1.0
  Na  Na6  1  0.681  0.738  0.861  1.0
  Na  Na7  1  0.181  0.262  0.639  1.0
  Be  Be8  1  0.656  0.500  0.587  1.0
  Be  Be9  1  0.344  0.500  0.413  1.0
  Be  Be10  1  0.844  0.500  0.087  1.0
  Be  Be11  1  0.156  0.500  0.913  1.0
  Ge  Ge12  1  0.155  0.720  0.659  1.0
  Ge  Ge13  1  0.655  0.280  0.841  1.0
  Ge  Ge14  1  0.845  0.280  0.341  1.0
  Ge  Ge15  1  0.345  0.720  0.159  1.0
  O  O16  1  0.168  0.547  0.074  1.0
  O  O17  1  0.668  0.453  0.426  1.0
  O  O18  1  0.832  0.453  0.926  1.0
  O  O19  1  0.332  0.547  0.574  1.0
  O  O20  1  0.314  0.314  0.875  1.0
  O  O21  1  0.186  0.314  0.375  1.0
  O  O22  1  0.814  0.686  0.625  1.0
  O  O23  1  0.686  0.686  0.125  1.0
  O  O24  1  0.283  0.685  0.329  1.0
  O  O25  1  0.783  0.315  0.171  1.0
  O  O26  1  0.717  0.315  0.671  1.0
  O  O27  1  0.217  0.685  0.829  1.0
  O  O28  1  0.238  0.948  0.622  1.0
  O  O29  1  0.738  0.052  0.878  1.0
  O  O30  1  0.762  0.052  0.378  1.0
  O  O31  1  0.262  0.948  0.122  1.0
[/CIF]
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