The material described by Na4BeAlSi4O12Cl crystallizes in the monoclinic Cc space group. There are four inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(5), one O(9), and one Cl(1) atom to form distorted NaClO3 tetrahedra that share  a cornercorner with one Na(3)ClO3 tetrahedra,  a cornercorner with one Na(4)ClO3 tetrahedra,  a cornercorner with one Be(1)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  a cornercorner with one Si(4)O4 tetrahedra. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one O(12), one O(2), one O(6), and one Cl(1) atom. In the third Na site, Na(3) is bonded to one O(3), one O(4), one O(8), and one Cl(1) atom to form NaClO3 tetrahedra that share  a cornercorner with one Na(1)ClO3 tetrahedra,  a cornercorner with one Na(4)ClO3 tetrahedra,  a cornercorner with one Be(1)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  a cornercorner with one Si(4)O4 tetrahedra. In the fourth Na site, Na(4) is bonded to one O(10), one O(11), one O(7), and one Cl(1) atom to form distorted NaClO3 tetrahedra that share  a cornercorner with one Na(1)ClO3 tetrahedra,  a cornercorner with one Na(3)ClO3 tetrahedra,  a cornercorner with one Be(1)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. Be(1) is bonded to one O(3), one O(5), one O(6), and one O(7) atom to form BeO4 tetrahedra that share  a cornercorner with one Na(1)ClO3 tetrahedra,  a cornercorner with one Na(3)ClO3 tetrahedra,  a cornercorner with one Na(4)ClO3 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  a cornercorner with one Si(4)O4 tetrahedra. Al(1) is bonded to one O(10), one O(12), one O(8), and one O(9) atom to form AlO4 tetrahedra that share  a cornercorner with one Na(1)ClO3 tetrahedra,  a cornercorner with one Na(3)ClO3 tetrahedra,  a cornercorner with one Na(4)ClO3 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  a cornercorner with one Si(4)O4 tetrahedra. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(12), one O(2), one O(4), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)ClO3 tetrahedra,  a cornercorner with one Na(3)ClO3 tetrahedra,  a cornercorner with one Be(1)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(4)O4 tetrahedra. In the second Si site, Si(2) is bonded to one O(1), one O(10), one O(2), and one O(3) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)ClO3 tetrahedra,  a cornercorner with one Na(3)ClO3 tetrahedra,  a cornercorner with one Na(4)ClO3 tetrahedra,  a cornercorner with one Be(1)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. In the third Si site, Si(3) is bonded to one O(1), one O(11), one O(7), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)ClO3 tetrahedra,  a cornercorner with one Na(3)ClO3 tetrahedra,  a cornercorner with one Be(1)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and corners with two equivalent Na(4)ClO3 tetrahedra. In the fourth Si site, Si(4) is bonded to one O(11), one O(4), one O(6), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)ClO3 tetrahedra,  a cornercorner with one Na(3)ClO3 tetrahedra,  a cornercorner with one Na(4)ClO3 tetrahedra,  a cornercorner with one Be(1)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one Si(2), and one Si(3) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(2), one Si(1), and one Si(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(3), one Be(1), and one Si(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(3), one Si(1), and one Si(4) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(1), one Be(1), and one Si(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(2), one Be(1), and one Si(4) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Na(4), one Be(1), and one Si(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Na(3), one Al(1), and one Si(3) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Na(1), one Al(1), and one Si(4) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Na(4), one Al(1), and one Si(2) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Na(4), one Si(3), and one Si(4) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Na(2), one Al(1), and one Si(1) atom. Cl(1) is bonded in a tetrahedral geometry to one Na(1), one Na(2), one Na(3), and one Na(4) atom. is represented by the CIF card [CIF]
data_Na4BeAlSi4ClO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.714
_cell_length_b   7.714
_cell_length_c   12.613
_cell_angle_alpha   89.950
_cell_angle_beta   89.950
_cell_angle_gamma   109.881
_symmetry_Int_Tables_number   1
_cell_volume   705.822
_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  0.189  0.707  0.822  1.0
  Na  Na1  1  0.136  0.024  0.489  1.0
  Na  Na2  1  0.663  0.179  0.691  1.0
  Na  Na3  1  0.707  0.189  0.322  1.0
  Na  Na4  1  0.179  0.663  0.191  1.0
  Na  Na5  1  0.483  0.625  0.497  1.0
  Na  Na6  1  0.024  0.136  0.989  1.0
  Na  Na7  1  0.625  0.483  0.997  1.0
  Be  Be8  1  0.371  0.124  0.879  1.0
  Be  Be9  1  0.124  0.371  0.379  1.0
  Al  Al10  1  0.877  0.632  0.622  1.0
  Al  Al11  1  0.632  0.877  0.122  1.0
  Si  Si12  1  0.005  0.009  0.749  1.0
  Si  Si13  1  0.615  0.876  0.871  1.0
  Si  Si14  1  0.489  0.497  0.255  1.0
  Si  Si15  1  0.125  0.379  0.625  1.0
  Si  Si16  1  0.876  0.615  0.371  1.0
  Si  Si17  1  0.497  0.489  0.755  1.0
  Si  Si18  1  0.009  0.005  0.249  1.0
  Si  Si19  1  0.379  0.125  0.125  1.0
  Cl  Cl20  1  0.499  1.000  0.500  1.0
  Cl  Cl21  1  1.000  0.499  0.000  1.0
  O  O22  1  0.503  0.696  0.795  1.0
  O  O23  1  0.836  0.951  0.838  1.0
  O  O24  1  0.530  0.035  0.849  1.0
  O  O25  1  0.004  0.210  0.705  1.0
  O  O26  1  0.012  0.188  0.310  1.0
  O  O27  1  0.188  0.012  0.810  1.0
  O  O28  1  0.104  0.312  0.504  1.0
  O  O29  1  0.346  0.447  0.351  1.0
  O  O30  1  0.035  0.530  0.349  1.0
  O  O31  1  0.447  0.346  0.851  1.0
  O  O32  1  0.500  0.692  0.200  1.0
  O  O33  1  0.061  0.554  0.653  1.0
  O  O34  1  0.696  0.503  0.295  1.0
  O  O35  1  0.605  0.798  0.991  1.0
  O  O36  1  0.692  0.500  0.700  1.0
  O  O37  1  0.346  0.441  0.656  1.0
  O  O38  1  0.798  0.605  0.491  1.0
  O  O39  1  0.869  0.957  0.148  1.0
  O  O40  1  0.957  0.869  0.648  1.0
  O  O41  1  0.554  0.061  0.153  1.0
  O  O42  1  0.951  0.836  0.338  1.0
  O  O43  1  0.210  0.004  0.205  1.0
  O  O44  1  0.312  0.104  0.004  1.0
  O  O45  1  0.441  0.346  0.156  1.0
[/CIF]
.
The material described by Na4BeAlSi4O12Cl crystallizes in the monoclinic Cc space group. There are four inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(5), one O(9), and one Cl(1) atom to form distorted NaClO3 tetrahedra that share  a cornercorner with one Na(3)ClO3 tetrahedra,  a cornercorner with one Na(4)ClO3 tetrahedra,  a cornercorner with one Be(1)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  a cornercorner with one Si(4)O4 tetrahedra. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one O(12), one O(2), one O(6), and one Cl(1) atom. In the third Na site, Na(3) is bonded to one O(3), one O(4), one O(8), and one Cl(1) atom to form NaClO3 tetrahedra that share  a cornercorner with one Na(1)ClO3 tetrahedra,  a cornercorner with one Na(4)ClO3 tetrahedra,  a cornercorner with one Be(1)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  a cornercorner with one Si(4)O4 tetrahedra. In the fourth Na site, Na(4) is bonded to one O(10), one O(11), one O(7), and one Cl(1) atom to form distorted NaClO3 tetrahedra that share  a cornercorner with one Na(1)ClO3 tetrahedra,  a cornercorner with one Na(3)ClO3 tetrahedra,  a cornercorner with one Be(1)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. Be(1) is bonded to one O(3), one O(5), one O(6), and one O(7) atom to form BeO4 tetrahedra that share  a cornercorner with one Na(1)ClO3 tetrahedra,  a cornercorner with one Na(3)ClO3 tetrahedra,  a cornercorner with one Na(4)ClO3 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  a cornercorner with one Si(4)O4 tetrahedra. Al(1) is bonded to one O(10), one O(12), one O(8), and one O(9) atom to form AlO4 tetrahedra that share  a cornercorner with one Na(1)ClO3 tetrahedra,  a cornercorner with one Na(3)ClO3 tetrahedra,  a cornercorner with one Na(4)ClO3 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  a cornercorner with one Si(4)O4 tetrahedra. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(12), one O(2), one O(4), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)ClO3 tetrahedra,  a cornercorner with one Na(3)ClO3 tetrahedra,  a cornercorner with one Be(1)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(4)O4 tetrahedra. In the second Si site, Si(2) is bonded to one O(1), one O(10), one O(2), and one O(3) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)ClO3 tetrahedra,  a cornercorner with one Na(3)ClO3 tetrahedra,  a cornercorner with one Na(4)ClO3 tetrahedra,  a cornercorner with one Be(1)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. In the third Si site, Si(3) is bonded to one O(1), one O(11), one O(7), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)ClO3 tetrahedra,  a cornercorner with one Na(3)ClO3 tetrahedra,  a cornercorner with one Be(1)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and corners with two equivalent Na(4)ClO3 tetrahedra. In the fourth Si site, Si(4) is bonded to one O(11), one O(4), one O(6), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)ClO3 tetrahedra,  a cornercorner with one Na(3)ClO3 tetrahedra,  a cornercorner with one Na(4)ClO3 tetrahedra,  a cornercorner with one Be(1)O4 tetrahedra,  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one Si(2), and one Si(3) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(2), one Si(1), and one Si(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(3), one Be(1), and one Si(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(3), one Si(1), and one Si(4) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(1), one Be(1), and one Si(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(2), one Be(1), and one Si(4) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Na(4), one Be(1), and one Si(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Na(3), one Al(1), and one Si(3) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Na(1), one Al(1), and one Si(4) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Na(4), one Al(1), and one Si(2) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Na(4), one Si(3), and one Si(4) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Na(2), one Al(1), and one Si(1) atom. Cl(1) is bonded in a tetrahedral geometry to one Na(1), one Na(2), one Na(3), and one Na(4) atom. is represented by the CIF card [CIF]
data_Na4BeAlSi4ClO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.714
_cell_length_b   7.714
_cell_length_c   12.613
_cell_angle_alpha   89.950
_cell_angle_beta   89.950
_cell_angle_gamma   109.881
_symmetry_Int_Tables_number   1
_cell_volume   705.822
_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  0.189  0.707  0.822  1.0
  Na  Na1  1  0.136  0.024  0.489  1.0
  Na  Na2  1  0.663  0.179  0.691  1.0
  Na  Na3  1  0.707  0.189  0.322  1.0
  Na  Na4  1  0.179  0.663  0.191  1.0
  Na  Na5  1  0.483  0.625  0.497  1.0
  Na  Na6  1  0.024  0.136  0.989  1.0
  Na  Na7  1  0.625  0.483  0.997  1.0
  Be  Be8  1  0.371  0.124  0.879  1.0
  Be  Be9  1  0.124  0.371  0.379  1.0
  Al  Al10  1  0.877  0.632  0.622  1.0
  Al  Al11  1  0.632  0.877  0.122  1.0
  Si  Si12  1  0.005  0.009  0.749  1.0
  Si  Si13  1  0.615  0.876  0.871  1.0
  Si  Si14  1  0.489  0.497  0.255  1.0
  Si  Si15  1  0.125  0.379  0.625  1.0
  Si  Si16  1  0.876  0.615  0.371  1.0
  Si  Si17  1  0.497  0.489  0.755  1.0
  Si  Si18  1  0.009  0.005  0.249  1.0
  Si  Si19  1  0.379  0.125  0.125  1.0
  Cl  Cl20  1  0.499  1.000  0.500  1.0
  Cl  Cl21  1  1.000  0.499  0.000  1.0
  O  O22  1  0.503  0.696  0.795  1.0
  O  O23  1  0.836  0.951  0.838  1.0
  O  O24  1  0.530  0.035  0.849  1.0
  O  O25  1  0.004  0.210  0.705  1.0
  O  O26  1  0.012  0.188  0.310  1.0
  O  O27  1  0.188  0.012  0.810  1.0
  O  O28  1  0.104  0.312  0.504  1.0
  O  O29  1  0.346  0.447  0.351  1.0
  O  O30  1  0.035  0.530  0.349  1.0
  O  O31  1  0.447  0.346  0.851  1.0
  O  O32  1  0.500  0.692  0.200  1.0
  O  O33  1  0.061  0.554  0.653  1.0
  O  O34  1  0.696  0.503  0.295  1.0
  O  O35  1  0.605  0.798  0.991  1.0
  O  O36  1  0.692  0.500  0.700  1.0
  O  O37  1  0.346  0.441  0.656  1.0
  O  O38  1  0.798  0.605  0.491  1.0
  O  O39  1  0.869  0.957  0.148  1.0
  O  O40  1  0.957  0.869  0.648  1.0
  O  O41  1  0.554  0.061  0.153  1.0
  O  O42  1  0.951  0.836  0.338  1.0
  O  O43  1  0.210  0.004  0.205  1.0
  O  O44  1  0.312  0.104  0.004  1.0
  O  O45  1  0.441  0.346  0.156  1.0
[/CIF]
.