The compound described by Na2ZnB6O11 crystallizes in the monoclinic Cc space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 7-coordinate geometry to one O(11), one O(2), one O(3), one O(4), one O(7), one O(8), and one O(9) atom. In the second Na site, Na(2) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(11), one O(2), one O(3), one O(5), and one O(9) atom. Zn(1) is bonded in a trigonal planar geometry to one O(10), one O(6), and one O(7) atom. There are six 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 in a trigonal planar geometry to one O(2), one O(4), and one O(7) atom. In the third B site, B(3) is bonded to one O(2), one O(3), one O(6), and one O(8) atom to form corner-sharing BO4 tetrahedra. In the fourth B site, B(4) is bonded to one O(1), one O(11), one O(6), and one O(9) atom to form corner-sharing BO4 tetrahedra. In the fifth B site, B(5) is bonded in a trigonal planar geometry to one O(10), one O(11), and one O(5) atom. In the sixth B site, B(6) is bonded in a trigonal planar geometry to one O(4), one O(8), and one O(9) atom. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Na(2), one B(1), and one B(4) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Na(1), one Na(2), one B(2), and one B(3) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Na(1), one Na(2), one B(1), and one B(3) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Na(1), one B(2), and one B(6) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Na(2), one B(1), and one B(5) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Zn(1), one B(3), and one B(4) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Na(1), one Zn(1), and one B(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Na(1), one B(3), and one B(6) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Na(1), one Na(2), one B(4), and one B(6) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Na(2), one Zn(1), and one B(5) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Na(1), one Na(2), one B(4), and one B(5) atom. is represented by the CIF card [CIF]
data_Na2ZnB6O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.595
_cell_length_b   6.595
_cell_length_c   11.603
_cell_angle_alpha   71.916
_cell_angle_beta   71.916
_cell_angle_gamma   69.032
_symmetry_Int_Tables_number   1
_cell_volume   436.516
_cell_formula_units_Z   2
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  0.449  0.633  0.101  1.0
  Na  Na1  1  0.633  0.449  0.601  1.0
  Na  Na2  1  0.340  0.168  0.169  1.0
  Na  Na3  1  0.168  0.340  0.669  1.0
  Zn  Zn4  1  0.027  0.764  0.883  1.0
  Zn  Zn5  1  0.764  0.027  0.383  1.0
  B  B6  1  0.157  0.106  0.979  1.0
  B  B7  1  0.106  0.157  0.479  1.0
  B  B8  1  0.595  0.002  0.645  1.0
  B  B9  1  0.002  0.595  0.145  1.0
  B  B10  1  0.570  0.987  0.866  1.0
  B  B11  1  0.987  0.570  0.366  1.0
  B  B12  1  0.809  0.219  0.896  1.0
  B  B13  1  0.219  0.809  0.396  1.0
  B  B14  1  0.180  0.791  0.620  1.0
  B  B15  1  0.791  0.180  0.120  1.0
  B  B16  1  0.684  0.639  0.787  1.0
  B  B17  1  0.639  0.684  0.287  1.0
  O  O18  1  0.059  0.144  0.883  1.0
  O  O19  1  0.144  0.059  0.383  1.0
  O  O20  1  0.517  0.104  0.744  1.0
  O  O21  1  0.104  0.517  0.244  1.0
  O  O22  1  0.381  0.045  0.971  1.0
  O  O23  1  0.045  0.381  0.471  1.0
  O  O24  1  0.662  0.768  0.668  1.0
  O  O25  1  0.768  0.662  0.168  1.0
  O  O26  1  0.025  0.120  0.098  1.0
  O  O27  1  0.120  0.025  0.598  1.0
  O  O28  1  0.768  0.031  0.875  1.0
  O  O29  1  0.031  0.768  0.375  1.0
  O  O30  1  0.134  0.602  0.029  1.0
  O  O31  1  0.602  0.134  0.529  1.0
  O  O32  1  0.637  0.738  0.884  1.0
  O  O33  1  0.738  0.637  0.384  1.0
  O  O34  1  0.757  0.415  0.794  1.0
  O  O35  1  0.415  0.757  0.294  1.0
  O  O36  1  0.166  0.659  0.735  1.0
  O  O37  1  0.659  0.166  0.235  1.0
  O  O38  1  0.689  0.262  0.020  1.0
  O  O39  1  0.262  0.689  0.520  1.0
[/CIF]
.
The compound described by Na2ZnB6O11 crystallizes in the monoclinic Cc space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 7-coordinate geometry to one O(11), one O(2), one O(3), one O(4), one O(7), one O(8), and one O(9) atom. In the second Na site, Na(2) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(11), one O(2), one O(3), one O(5), and one O(9) atom. Zn(1) is bonded in a trigonal planar geometry to one O(10), one O(6), and one O(7) atom. There are six 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 in a trigonal planar geometry to one O(2), one O(4), and one O(7) atom. In the third B site, B(3) is bonded to one O(2), one O(3), one O(6), and one O(8) atom to form corner-sharing BO4 tetrahedra. In the fourth B site, B(4) is bonded to one O(1), one O(11), one O(6), and one O(9) atom to form corner-sharing BO4 tetrahedra. In the fifth B site, B(5) is bonded in a trigonal planar geometry to one O(10), one O(11), and one O(5) atom. In the sixth B site, B(6) is bonded in a trigonal planar geometry to one O(4), one O(8), and one O(9) atom. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Na(2), one B(1), and one B(4) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Na(1), one Na(2), one B(2), and one B(3) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Na(1), one Na(2), one B(1), and one B(3) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Na(1), one B(2), and one B(6) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Na(2), one B(1), and one B(5) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Zn(1), one B(3), and one B(4) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Na(1), one Zn(1), and one B(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Na(1), one B(3), and one B(6) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Na(1), one Na(2), one B(4), and one B(6) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Na(2), one Zn(1), and one B(5) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Na(1), one Na(2), one B(4), and one B(5) atom. is represented by the CIF card [CIF]
data_Na2ZnB6O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.595
_cell_length_b   6.595
_cell_length_c   11.603
_cell_angle_alpha   71.916
_cell_angle_beta   71.916
_cell_angle_gamma   69.032
_symmetry_Int_Tables_number   1
_cell_volume   436.516
_cell_formula_units_Z   2
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  0.449  0.633  0.101  1.0
  Na  Na1  1  0.633  0.449  0.601  1.0
  Na  Na2  1  0.340  0.168  0.169  1.0
  Na  Na3  1  0.168  0.340  0.669  1.0
  Zn  Zn4  1  0.027  0.764  0.883  1.0
  Zn  Zn5  1  0.764  0.027  0.383  1.0
  B  B6  1  0.157  0.106  0.979  1.0
  B  B7  1  0.106  0.157  0.479  1.0
  B  B8  1  0.595  0.002  0.645  1.0
  B  B9  1  0.002  0.595  0.145  1.0
  B  B10  1  0.570  0.987  0.866  1.0
  B  B11  1  0.987  0.570  0.366  1.0
  B  B12  1  0.809  0.219  0.896  1.0
  B  B13  1  0.219  0.809  0.396  1.0
  B  B14  1  0.180  0.791  0.620  1.0
  B  B15  1  0.791  0.180  0.120  1.0
  B  B16  1  0.684  0.639  0.787  1.0
  B  B17  1  0.639  0.684  0.287  1.0
  O  O18  1  0.059  0.144  0.883  1.0
  O  O19  1  0.144  0.059  0.383  1.0
  O  O20  1  0.517  0.104  0.744  1.0
  O  O21  1  0.104  0.517  0.244  1.0
  O  O22  1  0.381  0.045  0.971  1.0
  O  O23  1  0.045  0.381  0.471  1.0
  O  O24  1  0.662  0.768  0.668  1.0
  O  O25  1  0.768  0.662  0.168  1.0
  O  O26  1  0.025  0.120  0.098  1.0
  O  O27  1  0.120  0.025  0.598  1.0
  O  O28  1  0.768  0.031  0.875  1.0
  O  O29  1  0.031  0.768  0.375  1.0
  O  O30  1  0.134  0.602  0.029  1.0
  O  O31  1  0.602  0.134  0.529  1.0
  O  O32  1  0.637  0.738  0.884  1.0
  O  O33  1  0.738  0.637  0.384  1.0
  O  O34  1  0.757  0.415  0.794  1.0
  O  O35  1  0.415  0.757  0.294  1.0
  O  O36  1  0.166  0.659  0.735  1.0
  O  O37  1  0.659  0.166  0.235  1.0
  O  O38  1  0.689  0.262  0.020  1.0
  O  O39  1  0.262  0.689  0.520  1.0
[/CIF]
.