The material described by SrBe2(BO3)2 crystallizes in the monoclinic P2_1/c space group. Sr(1) is bonded in a 9-coordinate geometry to one O(2), one O(3), one O(4), two equivalent O(1), two equivalent O(5), and two equivalent O(6) atoms. There are two inequivalent Be sites. In the first Be site, Be(1) is bonded to one O(1), one O(5), and two equivalent O(2) atoms to form corner-sharing BeO4 tetrahedra. In the second Be site, Be(2) is bonded to one O(4), one O(6), and two equivalent O(3) atoms to form edge-sharing BeO4 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(4) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(2), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to two equivalent Sr(1), one Be(1), and one B(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Sr(1), two equivalent Be(1), and one B(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Sr(1), two equivalent Be(2), and one B(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one Be(2), and one B(1) atom. In the fifth O site, O(5) is bonded in a distorted water-like geometry to two equivalent Sr(1), one Be(1), and one B(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to two equivalent Sr(1), one Be(2), and one B(2) atom. is represented by the CIF file [CIF]
data_SrBe2(BO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.530
_cell_length_b   9.338
_cell_length_c   11.938
_cell_angle_alpha   65.328
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   458.952
_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  0.527  0.230  0.845  1.0
  Sr  Sr1  1  0.973  0.230  0.345  1.0
  Sr  Sr2  1  0.473  0.770  0.155  1.0
  Sr  Sr3  1  0.027  0.770  0.655  1.0
  Be  Be4  1  0.561  0.909  0.807  1.0
  Be  Be5  1  0.439  0.091  0.193  1.0
  Be  Be6  1  0.597  0.578  0.547  1.0
  Be  Be7  1  0.097  0.422  0.953  1.0
  Be  Be8  1  0.939  0.909  0.307  1.0
  Be  Be9  1  0.403  0.422  0.453  1.0
  Be  Be10  1  0.061  0.091  0.693  1.0
  Be  Be11  1  0.903  0.578  0.047  1.0
  B  B12  1  0.438  0.405  0.144  1.0
  B  B13  1  0.092  0.870  0.924  1.0
  B  B14  1  0.908  0.130  0.076  1.0
  B  B15  1  0.562  0.595  0.856  1.0
  B  B16  1  0.062  0.405  0.644  1.0
  B  B17  1  0.408  0.870  0.424  1.0
  B  B18  1  0.592  0.130  0.576  1.0
  B  B19  1  0.938  0.595  0.356  1.0
  O  O20  1  0.992  0.248  0.712  1.0
  O  O21  1  0.082  0.059  0.182  1.0
  O  O22  1  0.008  0.752  0.288  1.0
  O  O23  1  0.508  0.248  0.212  1.0
  O  O24  1  0.418  0.059  0.682  1.0
  O  O25  1  0.337  0.440  0.586  1.0
  O  O26  1  0.872  0.521  0.640  1.0
  O  O27  1  0.128  0.479  0.360  1.0
  O  O28  1  0.879  0.077  0.580  1.0
  O  O29  1  0.628  0.521  0.140  1.0
  O  O30  1  0.511  0.753  0.531  1.0
  O  O31  1  0.837  0.560  0.914  1.0
  O  O32  1  0.663  0.560  0.414  1.0
  O  O33  1  0.489  0.247  0.469  1.0
  O  O34  1  0.989  0.753  0.031  1.0
  O  O35  1  0.918  0.941  0.818  1.0
  O  O36  1  0.492  0.752  0.788  1.0
  O  O37  1  0.121  0.923  0.420  1.0
  O  O38  1  0.582  0.941  0.318  1.0
  O  O39  1  0.372  0.479  0.860  1.0
  O  O40  1  0.011  0.247  0.969  1.0
  O  O41  1  0.621  0.077  0.080  1.0
  O  O42  1  0.163  0.440  0.086  1.0
  O  O43  1  0.379  0.923  0.920  1.0
[/CIF]
.
The material described by SrBe2(BO3)2 crystallizes in the monoclinic P2_1/c space group. Sr(1) is bonded in a 9-coordinate geometry to one O(2), one O(3), one O(4), two equivalent O(1), two equivalent O(5), and two equivalent O(6) atoms. There are two inequivalent Be sites. In the first Be site, Be(1) is bonded to one O(1), one O(5), and two equivalent O(2) atoms to form corner-sharing BeO4 tetrahedra. In the second Be site, Be(2) is bonded to one O(4), one O(6), and two equivalent O(3) atoms to form edge-sharing BeO4 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(4) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(2), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to two equivalent Sr(1), one Be(1), and one B(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Sr(1), two equivalent Be(1), and one B(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Sr(1), two equivalent Be(2), and one B(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Sr(1), one Be(2), and one B(1) atom. In the fifth O site, O(5) is bonded in a distorted water-like geometry to two equivalent Sr(1), one Be(1), and one B(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to two equivalent Sr(1), one Be(2), and one B(2) atom. is represented by the CIF file [CIF]
data_SrBe2(BO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.530
_cell_length_b   9.338
_cell_length_c   11.938
_cell_angle_alpha   65.328
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   458.952
_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  0.527  0.230  0.845  1.0
  Sr  Sr1  1  0.973  0.230  0.345  1.0
  Sr  Sr2  1  0.473  0.770  0.155  1.0
  Sr  Sr3  1  0.027  0.770  0.655  1.0
  Be  Be4  1  0.561  0.909  0.807  1.0
  Be  Be5  1  0.439  0.091  0.193  1.0
  Be  Be6  1  0.597  0.578  0.547  1.0
  Be  Be7  1  0.097  0.422  0.953  1.0
  Be  Be8  1  0.939  0.909  0.307  1.0
  Be  Be9  1  0.403  0.422  0.453  1.0
  Be  Be10  1  0.061  0.091  0.693  1.0
  Be  Be11  1  0.903  0.578  0.047  1.0
  B  B12  1  0.438  0.405  0.144  1.0
  B  B13  1  0.092  0.870  0.924  1.0
  B  B14  1  0.908  0.130  0.076  1.0
  B  B15  1  0.562  0.595  0.856  1.0
  B  B16  1  0.062  0.405  0.644  1.0
  B  B17  1  0.408  0.870  0.424  1.0
  B  B18  1  0.592  0.130  0.576  1.0
  B  B19  1  0.938  0.595  0.356  1.0
  O  O20  1  0.992  0.248  0.712  1.0
  O  O21  1  0.082  0.059  0.182  1.0
  O  O22  1  0.008  0.752  0.288  1.0
  O  O23  1  0.508  0.248  0.212  1.0
  O  O24  1  0.418  0.059  0.682  1.0
  O  O25  1  0.337  0.440  0.586  1.0
  O  O26  1  0.872  0.521  0.640  1.0
  O  O27  1  0.128  0.479  0.360  1.0
  O  O28  1  0.879  0.077  0.580  1.0
  O  O29  1  0.628  0.521  0.140  1.0
  O  O30  1  0.511  0.753  0.531  1.0
  O  O31  1  0.837  0.560  0.914  1.0
  O  O32  1  0.663  0.560  0.414  1.0
  O  O33  1  0.489  0.247  0.469  1.0
  O  O34  1  0.989  0.753  0.031  1.0
  O  O35  1  0.918  0.941  0.818  1.0
  O  O36  1  0.492  0.752  0.788  1.0
  O  O37  1  0.121  0.923  0.420  1.0
  O  O38  1  0.582  0.941  0.318  1.0
  O  O39  1  0.372  0.479  0.860  1.0
  O  O40  1  0.011  0.247  0.969  1.0
  O  O41  1  0.621  0.077  0.080  1.0
  O  O42  1  0.163  0.440  0.086  1.0
  O  O43  1  0.379  0.923  0.920  1.0
[/CIF]
.