The compound described by SrBeB2O5 crystallizes in the monoclinic P2_1/c space group. Sr(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(1), two equivalent O(3), and four equivalent O(5) atoms. Be(1) is bonded to one O(3), one O(4), and two equivalent O(2) atoms to form BeO4 tetrahedra that share corners with two equivalent Be(1)O4 tetrahedra and corners with four equivalent B(2)O4 tetrahedra. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(5) atom. In the second B site, B(2) is bonded to one O(1), one O(2), and two equivalent O(4) atoms to form BO4 tetrahedra that share corners with two equivalent B(2)O4 tetrahedra and corners with four equivalent Be(1)O4 tetrahedra. There are five inequivalent O sites. In the first O site, O(5) is bonded in a distorted single-bond geometry to four equivalent Sr(1) and one B(1) atom. In the second O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Sr(1), one B(1), and one B(2) atom. In the third O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Sr(1), two equivalent Be(1), and one B(2) atom. In the fourth O site, O(3) is bonded in a distorted bent 120 degrees geometry to two equivalent Sr(1), one Be(1), and one B(1) atom. In the fifth O site, O(4) is bonded in a trigonal planar geometry to one Be(1) and two equivalent B(2) atoms. is represented by the CIF card [CIF]
data_SrBeB2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.888
_cell_length_b   5.276
_cell_length_c   17.745
_cell_angle_alpha   80.523
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   359.049
_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
  Sr  Sr0  1  0.647  0.784  0.928  1.0
  Sr  Sr1  1  0.853  0.784  0.428  1.0
  Sr  Sr2  1  0.353  0.216  0.072  1.0
  Sr  Sr3  1  0.147  0.216  0.572  1.0
  Be  Be4  1  0.763  0.892  0.714  1.0
  Be  Be5  1  0.737  0.892  0.214  1.0
  Be  Be6  1  0.237  0.108  0.286  1.0
  Be  Be7  1  0.263  0.108  0.786  1.0
  B  B8  1  0.012  0.298  0.901  1.0
  B  B9  1  0.488  0.298  0.401  1.0
  B  B10  1  0.988  0.702  0.099  1.0
  B  B11  1  0.512  0.702  0.599  1.0
  B  B12  1  0.279  0.597  0.786  1.0
  B  B13  1  0.221  0.597  0.286  1.0
  B  B14  1  0.721  0.403  0.214  1.0
  B  B15  1  0.779  0.403  0.714  1.0
  O  O16  1  0.129  0.541  0.865  1.0
  O  O17  1  0.371  0.541  0.365  1.0
  O  O18  1  0.871  0.459  0.135  1.0
  O  O19  1  0.629  0.459  0.635  1.0
  O  O20  1  0.467  0.841  0.780  1.0
  O  O21  1  0.033  0.841  0.280  1.0
  O  O22  1  0.533  0.159  0.220  1.0
  O  O23  1  0.967  0.159  0.720  1.0
  O  O24  1  0.117  0.082  0.873  1.0
  O  O25  1  0.383  0.082  0.373  1.0
  O  O26  1  0.883  0.918  0.127  1.0
  O  O27  1  0.617  0.918  0.627  1.0
  O  O28  1  0.001  0.625  0.726  1.0
  O  O29  1  0.499  0.625  0.226  1.0
  O  O30  1  0.999  0.375  0.274  1.0
  O  O31  1  0.501  0.375  0.774  1.0
  O  O32  1  0.806  0.283  0.964  1.0
  O  O33  1  0.694  0.283  0.464  1.0
  O  O34  1  0.194  0.717  0.036  1.0
  O  O35  1  0.306  0.717  0.536  1.0
[/CIF]
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The compound described by SrBeB2O5 crystallizes in the monoclinic P2_1/c space group. Sr(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(1), two equivalent O(3), and four equivalent O(5) atoms. Be(1) is bonded to one O(3), one O(4), and two equivalent O(2) atoms to form BeO4 tetrahedra that share corners with two equivalent Be(1)O4 tetrahedra and corners with four equivalent B(2)O4 tetrahedra. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(5) atom. In the second B site, B(2) is bonded to one O(1), one O(2), and two equivalent O(4) atoms to form BO4 tetrahedra that share corners with two equivalent B(2)O4 tetrahedra and corners with four equivalent Be(1)O4 tetrahedra. There are five inequivalent O sites. In the first O site, O(5) is bonded in a distorted single-bond geometry to four equivalent Sr(1) and one B(1) atom. In the second O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Sr(1), one B(1), and one B(2) atom. In the third O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Sr(1), two equivalent Be(1), and one B(2) atom. In the fourth O site, O(3) is bonded in a distorted bent 120 degrees geometry to two equivalent Sr(1), one Be(1), and one B(1) atom. In the fifth O site, O(4) is bonded in a trigonal planar geometry to one Be(1) and two equivalent B(2) atoms. is represented by the CIF card [CIF]
data_SrBeB2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.888
_cell_length_b   5.276
_cell_length_c   17.745
_cell_angle_alpha   80.523
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   359.049
_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
  Sr  Sr0  1  0.647  0.784  0.928  1.0
  Sr  Sr1  1  0.853  0.784  0.428  1.0
  Sr  Sr2  1  0.353  0.216  0.072  1.0
  Sr  Sr3  1  0.147  0.216  0.572  1.0
  Be  Be4  1  0.763  0.892  0.714  1.0
  Be  Be5  1  0.737  0.892  0.214  1.0
  Be  Be6  1  0.237  0.108  0.286  1.0
  Be  Be7  1  0.263  0.108  0.786  1.0
  B  B8  1  0.012  0.298  0.901  1.0
  B  B9  1  0.488  0.298  0.401  1.0
  B  B10  1  0.988  0.702  0.099  1.0
  B  B11  1  0.512  0.702  0.599  1.0
  B  B12  1  0.279  0.597  0.786  1.0
  B  B13  1  0.221  0.597  0.286  1.0
  B  B14  1  0.721  0.403  0.214  1.0
  B  B15  1  0.779  0.403  0.714  1.0
  O  O16  1  0.129  0.541  0.865  1.0
  O  O17  1  0.371  0.541  0.365  1.0
  O  O18  1  0.871  0.459  0.135  1.0
  O  O19  1  0.629  0.459  0.635  1.0
  O  O20  1  0.467  0.841  0.780  1.0
  O  O21  1  0.033  0.841  0.280  1.0
  O  O22  1  0.533  0.159  0.220  1.0
  O  O23  1  0.967  0.159  0.720  1.0
  O  O24  1  0.117  0.082  0.873  1.0
  O  O25  1  0.383  0.082  0.373  1.0
  O  O26  1  0.883  0.918  0.127  1.0
  O  O27  1  0.617  0.918  0.627  1.0
  O  O28  1  0.001  0.625  0.726  1.0
  O  O29  1  0.499  0.625  0.226  1.0
  O  O30  1  0.999  0.375  0.274  1.0
  O  O31  1  0.501  0.375  0.774  1.0
  O  O32  1  0.806  0.283  0.964  1.0
  O  O33  1  0.694  0.283  0.464  1.0
  O  O34  1  0.194  0.717  0.036  1.0
  O  O35  1  0.306  0.717  0.536  1.0
[/CIF]
.