The structure described by Na2Cu3(GeO3)4 crystallizes in the triclinic P-1 space group. Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(4), one O(6), and two equivalent O(5) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(3), and one O(6) atom. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to two equivalent O(3) and two equivalent O(6) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form corner-sharing GeO4 tetrahedra. In the second Ge site, Ge(2) is bonded to one O(1), one O(4), one O(5), and one O(6) atom to form corner-sharing GeO4 tetrahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one Cu(1), and one Ge(2) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Na(1), one Cu(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Cu(1), one Cu(2), and one Ge(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Ge(1), and one Ge(2) atom. In the fifth O site, O(5) is bonded to two equivalent Na(1), one Ge(1), and one Ge(2) atom to form distorted ONa2Ge2 trigonal pyramids that share corners with three equivalent O(6)NaCu2Ge trigonal pyramids and  an edgeedge with one O(5)Na2Ge2 trigonal pyramid. In the sixth O site, O(6) is bonded to one Na(1), one Cu(1), one Cu(2), and one Ge(2) atom to form distorted ONaCu2Ge trigonal pyramids that share  a cornercorner with one O(6)NaCu2Ge trigonal pyramid and corners with three equivalent O(5)Na2Ge2 trigonal pyramids. is represented by the CIF file [CIF]
data_Na2Cu3(GeO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.556
_cell_length_b   6.529
_cell_length_c   7.771
_cell_angle_alpha   88.366
_cell_angle_beta   77.571
_cell_angle_gamma   89.190
_symmetry_Int_Tables_number   1
_cell_volume   275.138
_cell_formula_units_Z   1
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  0.083  0.255  0.607  1.0
  Na  Na1  1  0.917  0.745  0.393  1.0
  Cu  Cu2  1  0.502  0.174  0.815  1.0
  Cu  Cu3  1  0.498  0.826  0.185  1.0
  Cu  Cu4  1  0.000  0.000  0.000  1.0
  Ge  Ge5  1  0.246  0.391  0.183  1.0
  Ge  Ge6  1  0.754  0.609  0.817  1.0
  Ge  Ge7  1  0.692  0.215  0.371  1.0
  Ge  Ge8  1  0.308  0.785  0.629  1.0
  O  O9  1  0.700  0.125  0.583  1.0
  O  O10  1  0.300  0.875  0.417  1.0
  O  O11  1  0.285  0.642  0.101  1.0
  O  O12  1  0.715  0.358  0.899  1.0
  O  O13  1  0.262  0.181  0.041  1.0
  O  O14  1  0.738  0.819  0.959  1.0
  O  O15  1  0.414  0.346  0.357  1.0
  O  O16  1  0.586  0.654  0.643  1.0
  O  O17  1  0.936  0.398  0.317  1.0
  O  O18  1  0.234  0.995  0.774  1.0
  O  O19  1  0.766  0.005  0.226  1.0
  O  O20  1  0.064  0.602  0.683  1.0
[/CIF]
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The structure described by Na2Cu3(GeO3)4 crystallizes in the triclinic P-1 space group. Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(4), one O(6), and two equivalent O(5) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(3), and one O(6) atom. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to two equivalent O(3) and two equivalent O(6) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form corner-sharing GeO4 tetrahedra. In the second Ge site, Ge(2) is bonded to one O(1), one O(4), one O(5), and one O(6) atom to form corner-sharing GeO4 tetrahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one Cu(1), and one Ge(2) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Na(1), one Cu(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Cu(1), one Cu(2), and one Ge(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Ge(1), and one Ge(2) atom. In the fifth O site, O(5) is bonded to two equivalent Na(1), one Ge(1), and one Ge(2) atom to form distorted ONa2Ge2 trigonal pyramids that share corners with three equivalent O(6)NaCu2Ge trigonal pyramids and  an edgeedge with one O(5)Na2Ge2 trigonal pyramid. In the sixth O site, O(6) is bonded to one Na(1), one Cu(1), one Cu(2), and one Ge(2) atom to form distorted ONaCu2Ge trigonal pyramids that share  a cornercorner with one O(6)NaCu2Ge trigonal pyramid and corners with three equivalent O(5)Na2Ge2 trigonal pyramids. is represented by the CIF file [CIF]
data_Na2Cu3(GeO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.556
_cell_length_b   6.529
_cell_length_c   7.771
_cell_angle_alpha   88.366
_cell_angle_beta   77.571
_cell_angle_gamma   89.190
_symmetry_Int_Tables_number   1
_cell_volume   275.138
_cell_formula_units_Z   1
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  0.083  0.255  0.607  1.0
  Na  Na1  1  0.917  0.745  0.393  1.0
  Cu  Cu2  1  0.502  0.174  0.815  1.0
  Cu  Cu3  1  0.498  0.826  0.185  1.0
  Cu  Cu4  1  0.000  0.000  0.000  1.0
  Ge  Ge5  1  0.246  0.391  0.183  1.0
  Ge  Ge6  1  0.754  0.609  0.817  1.0
  Ge  Ge7  1  0.692  0.215  0.371  1.0
  Ge  Ge8  1  0.308  0.785  0.629  1.0
  O  O9  1  0.700  0.125  0.583  1.0
  O  O10  1  0.300  0.875  0.417  1.0
  O  O11  1  0.285  0.642  0.101  1.0
  O  O12  1  0.715  0.358  0.899  1.0
  O  O13  1  0.262  0.181  0.041  1.0
  O  O14  1  0.738  0.819  0.959  1.0
  O  O15  1  0.414  0.346  0.357  1.0
  O  O16  1  0.586  0.654  0.643  1.0
  O  O17  1  0.936  0.398  0.317  1.0
  O  O18  1  0.234  0.995  0.774  1.0
  O  O19  1  0.766  0.005  0.226  1.0
  O  O20  1  0.064  0.602  0.683  1.0
[/CIF]
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