The crystal structure described by Sr3Ge2(B3O8)2 crystallizes in the triclinic P-1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(3), one O(4), one O(5), one O(7), one O(8), two equivalent O(1), and two equivalent O(2) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(6) atoms. There are three inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. In the second B site, B(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form BO4 tetrahedra that share  a cornercorner with one B(3)O4 tetrahedra and corners with two equivalent Ge(1)O4 tetrahedra. In the third B site, B(3) is bonded to one O(1), one O(6), one O(7), and one O(8) atom to form BO4 tetrahedra that share  a cornercorner with one B(2)O4 tetrahedra and corners with two equivalent Ge(1)O4 tetrahedra. Ge(1) is bonded to one O(4), one O(5), one O(7), and one O(8) atom to form GeO4 tetrahedra that share corners with two equivalent B(2)O4 tetrahedra and corners with two equivalent B(3)O4 tetrahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent Sr(1), one B(1), and one B(3) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Sr(2), two equivalent Sr(1), and one B(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one Sr(2), one B(1), and one B(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one Sr(2), one B(2), and one Ge(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Sr(1), one B(2), and one Ge(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Sr(2), one B(2), and one B(3) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Sr(1), one B(3), and one Ge(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Sr(1), one B(3), and one Ge(1) atom. is represented by the CIF card [CIF]
data_Sr3Ge2(B3O8)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.063
_cell_length_b   7.466
_cell_length_c   8.565
_cell_angle_alpha   103.285
_cell_angle_beta   102.847
_cell_angle_gamma   89.529
_symmetry_Int_Tables_number   1
_cell_volume   306.913
_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
  Sr  Sr0  1  0.091  0.091  0.742  1.0
  Sr  Sr1  1  0.909  0.909  0.258  1.0
  Sr  Sr2  1  0.000  0.500  0.500  1.0
  Ge  Ge3  1  0.700  0.315  0.054  1.0
  Ge  Ge4  1  0.300  0.685  0.946  1.0
  B  B5  1  0.458  0.808  0.539  1.0
  B  B6  1  0.542  0.192  0.461  1.0
  B  B7  1  0.459  0.589  0.258  1.0
  B  B8  1  0.541  0.411  0.742  1.0
  B  B9  1  0.270  0.245  0.196  1.0
  B  B10  1  0.730  0.755  0.804  1.0
  O  O11  1  0.625  0.883  0.696  1.0
  O  O12  1  0.375  0.117  0.304  1.0
  O  O13  1  0.187  0.822  0.512  1.0
  O  O14  1  0.813  0.178  0.488  1.0
  O  O15  1  0.587  0.724  0.414  1.0
  O  O16  1  0.413  0.276  0.586  1.0
  O  O17  1  0.706  0.535  0.190  1.0
  O  O18  1  0.294  0.465  0.810  1.0
  O  O19  1  0.268  0.684  0.146  1.0
  O  O20  1  0.732  0.316  0.854  1.0
  O  O21  1  0.325  0.436  0.293  1.0
  O  O22  1  0.675  0.564  0.707  1.0
  O  O23  1  0.972  0.193  0.141  1.0
  O  O24  1  0.028  0.807  0.859  1.0
  O  O25  1  0.387  0.205  0.046  1.0
  O  O26  1  0.613  0.795  0.954  1.0
[/CIF]
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The crystal structure described by Sr3Ge2(B3O8)2 crystallizes in the triclinic P-1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(3), one O(4), one O(5), one O(7), one O(8), two equivalent O(1), and two equivalent O(2) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(6) atoms. There are three inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. In the second B site, B(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form BO4 tetrahedra that share  a cornercorner with one B(3)O4 tetrahedra and corners with two equivalent Ge(1)O4 tetrahedra. In the third B site, B(3) is bonded to one O(1), one O(6), one O(7), and one O(8) atom to form BO4 tetrahedra that share  a cornercorner with one B(2)O4 tetrahedra and corners with two equivalent Ge(1)O4 tetrahedra. Ge(1) is bonded to one O(4), one O(5), one O(7), and one O(8) atom to form GeO4 tetrahedra that share corners with two equivalent B(2)O4 tetrahedra and corners with two equivalent B(3)O4 tetrahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent Sr(1), one B(1), and one B(3) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Sr(2), two equivalent Sr(1), and one B(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one Sr(2), one B(1), and one B(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one Sr(2), one B(2), and one Ge(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Sr(1), one B(2), and one Ge(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Sr(2), one B(2), and one B(3) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Sr(1), one B(3), and one Ge(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Sr(1), one B(3), and one Ge(1) atom. is represented by the CIF card [CIF]
data_Sr3Ge2(B3O8)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.063
_cell_length_b   7.466
_cell_length_c   8.565
_cell_angle_alpha   103.285
_cell_angle_beta   102.847
_cell_angle_gamma   89.529
_symmetry_Int_Tables_number   1
_cell_volume   306.913
_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
  Sr  Sr0  1  0.091  0.091  0.742  1.0
  Sr  Sr1  1  0.909  0.909  0.258  1.0
  Sr  Sr2  1  0.000  0.500  0.500  1.0
  Ge  Ge3  1  0.700  0.315  0.054  1.0
  Ge  Ge4  1  0.300  0.685  0.946  1.0
  B  B5  1  0.458  0.808  0.539  1.0
  B  B6  1  0.542  0.192  0.461  1.0
  B  B7  1  0.459  0.589  0.258  1.0
  B  B8  1  0.541  0.411  0.742  1.0
  B  B9  1  0.270  0.245  0.196  1.0
  B  B10  1  0.730  0.755  0.804  1.0
  O  O11  1  0.625  0.883  0.696  1.0
  O  O12  1  0.375  0.117  0.304  1.0
  O  O13  1  0.187  0.822  0.512  1.0
  O  O14  1  0.813  0.178  0.488  1.0
  O  O15  1  0.587  0.724  0.414  1.0
  O  O16  1  0.413  0.276  0.586  1.0
  O  O17  1  0.706  0.535  0.190  1.0
  O  O18  1  0.294  0.465  0.810  1.0
  O  O19  1  0.268  0.684  0.146  1.0
  O  O20  1  0.732  0.316  0.854  1.0
  O  O21  1  0.325  0.436  0.293  1.0
  O  O22  1  0.675  0.564  0.707  1.0
  O  O23  1  0.972  0.193  0.141  1.0
  O  O24  1  0.028  0.807  0.859  1.0
  O  O25  1  0.387  0.205  0.046  1.0
  O  O26  1  0.613  0.795  0.954  1.0
[/CIF]
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