The compound described by (Na8Al6Si6NO30)2N2 is Chalcostibite-derived structured and crystallizes in the triclinic P1 space group. The structure consists of one ammonia atom inside a Na8Al6Si6NO30 framework. In the Na8Al6Si6NO30 framework, there are eight inequivalent Na sites. In the first Na site, Na(1) is bonded in a 4-coordinate geometry to one O(11), one O(27), one O(29), one O(3), and one O(6) atom. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one O(12), one O(28), one O(4), and one O(5) atom. In the third Na site, Na(3) is bonded to one O(1), one O(28), one O(7), and one O(9) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Al(3)O4 tetrahedra,  a cornercorner with one Al(5)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, and  a cornercorner with one N(1)O4 tetrahedra. In the fourth Na site, Na(4) is bonded to one O(10), one O(2), one O(27), and one O(8) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Al(3)O4 tetrahedra,  a cornercorner with one Al(4)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one N(1)O4 tetrahedra. In the fifth Na site, Na(5) is bonded to one O(15), one O(18), one O(25), and one O(29) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Al(4)O4 tetrahedra,  a cornercorner with one Al(6)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, and  a cornercorner with one N(1)O4 tetrahedra. In the sixth Na site, Na(6) is bonded to one O(16), one O(17), one O(26), and one O(30) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Al(5)O4 tetrahedra,  a cornercorner with one Al(6)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one N(1)O4 tetrahedra. In the seventh Na site, Na(7) is bonded in a 6-coordinate geometry to one O(13), one O(18), one O(19), one O(21), one O(23), and one O(25) atom. In the eighth Na site, Na(8) is bonded in a 6-coordinate geometry to one O(14), one O(17), one O(20), one O(22), one O(24), and one O(26) atom. There are six inequivalent Al sites. In the first Al site, Al(1) is bonded in a 5-coordinate geometry to one O(1), one O(21), one O(23), one O(29), and one O(3) atom. In the second Al site, Al(2) is bonded in a 5-coordinate geometry to one O(2), one O(22), one O(24), one O(30), and one O(4) atom. In the third Al site, Al(3) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form AlO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. In the fourth Al site, Al(4) is bonded to one O(10), one O(11), one O(14), and one O(15) atom to form AlO4 tetrahedra that share  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. In the fifth Al site, Al(5) is bonded to one O(12), one O(13), one O(16), and one O(9) atom to form AlO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(6)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. In the sixth Al site, Al(6) is bonded to one O(17), one O(18), one O(19), and one O(20) atom to form AlO4 tetrahedra that share  a cornercorner with one Na(5)O4 tetrahedra,  a cornercorner with one Na(6)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. There are six inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(19), one O(30), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(6)O4 tetrahedra,  a cornercorner with one Al(3)O4 tetrahedra, and  a cornercorner with one Al(6)O4 tetrahedra. In the second Si site, Si(2) is bonded to one O(2), one O(20), one O(29), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 tetrahedra,  a cornercorner with one Al(3)O4 tetrahedra, and  a cornercorner with one Al(6)O4 tetrahedra. In the third Si site, Si(3) is bonded to one O(10), one O(3), one O(4), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Al(4)O4 tetrahedra, and  a cornercorner with one Al(5)O4 tetrahedra. In the fourth Si site, Si(4) is bonded to one O(12), one O(14), one O(17), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(6)O4 tetrahedra,  a cornercorner with one Al(3)O4 tetrahedra,  a cornercorner with one Al(4)O4 tetrahedra,  a cornercorner with one Al(5)O4 tetrahedra, and  a cornercorner with one Al(6)O4 tetrahedra. In the fifth Si site, Si(5) is bonded to one O(11), one O(13), one O(18), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(5)O4 tetrahedra,  a cornercorner with one Al(3)O4 tetrahedra,  a cornercorner with one Al(4)O4 tetrahedra,  a cornercorner with one Al(5)O4 tetrahedra, and  a cornercorner with one Al(6)O4 tetrahedra. In the sixth Si site, Si(6) is bonded in a 6-coordinate geometry to one O(15), one O(16), one O(21), one O(22), one O(23), and one O(24) atom. N(1) is bonded to one O(25), one O(26), one O(27), and one O(28) atom to form NO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 tetrahedra, and  a cornercorner with one Na(6)O4 tetrahedra. There are thirty inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(3), one Al(1), and one Si(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(4), one Al(2), and one Si(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one Al(1), and one Si(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(2), one Al(2), and one Si(3) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(2), one Al(3), and one Si(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(1), one Al(3), and one Si(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Na(3), one Al(3), and one Si(5) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Na(4), one Al(3), and one Si(4) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Na(3), one Al(5), and one Si(3) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Na(4), one Al(4), and one Si(3) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Na(1), one Al(4), and one Si(5) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Na(2), one Al(5), and one Si(4) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Na(7), one Al(5), and one Si(5) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Na(8), one Al(4), and one Si(4) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Na(5), one Al(4), and one Si(6) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Na(6), one Al(5), and one Si(6) atom. In the seventeenth O site, O(17) is bonded to one Na(6), one Na(8), one Al(6), and one Si(4) atom to form distorted corner-sharing ONa2AlSi trigonal pyramids. In the eighteenth O site, O(18) is bonded in a 4-coordinate geometry to one Na(5), one Na(7), one Al(6), and one Si(5) atom. In the nineteenth O site, O(19) is bonded in a 3-coordinate geometry to one Na(7), one Al(6), and one Si(1) atom. In the twentieth O site, O(20) is bonded in a 3-coordinate geometry to one Na(8), one Al(6), and one Si(2) atom. In the twenty-first O site, O(21) is bonded in a 2-coordinate geometry to one Na(7), one Al(1), one Si(6), and one O(23) atom. In the twenty-second O site, O(22) is bonded in a 2-coordinate geometry to one Na(8), one Al(2), one Si(6), and one O(24) atom. In the twenty-third O site, O(23) is bonded to one Na(7), one Al(1), one Si(6), and one O(21) atom to form distorted corner-sharing ONaAlSiO tetrahedra. In the twenty-fourth O site, O(24) is bonded to one Na(8), one Al(2), one Si(6), and one O(22) atom to form distorted ONaAlSiO tetrahedra that share  a cornercorner with one O(23)NaAlSiO tetrahedra and  a cornercorner with one O(17)Na2AlSi trigonal pyramid. In the twenty-fifth O site, O(25) is bonded in a distorted trigonal planar geometry to one Na(5), one Na(7), and one N(1) atom. In the twenty-sixth O site, O(26) is bonded in a distorted trigonal planar geometry to one Na(6), one Na(8), and one N(1) atom. In the twenty-seventh O site, O(27) is bonded in a trigonal planar geometry to one Na(1), one Na(4), and one N(1) atom. In the twenty-eighth O site, O(28) is bonded in a trigonal planar geometry to one Na(2), one Na(3), and one N(1) atom. In the twenty-ninth O site, O(29) is bonded in a 4-coordinate geometry to one Na(1), one Na(5), one Al(1), and one Si(2) atom. In the thirtieth O site, O(30) is bonded in a 3-coordinate geometry to one Na(6), one Al(2), and one Si(1) atom. is represented by the CIF file [CIF]
data_Na4Al3Si3NO15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.134
_cell_length_b   9.231
_cell_length_c   9.237
_cell_angle_alpha   90.179
_cell_angle_beta   90.033
_cell_angle_gamma   90.242
_symmetry_Int_Tables_number   1
_cell_volume   778.790
_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  0.214  0.790  0.208  1.0
  Na  Na1  1  0.789  0.208  0.208  1.0
  Na  Na2  1  0.223  0.220  0.219  1.0
  Na  Na3  1  0.779  0.781  0.216  1.0
  Na  Na4  1  0.206  0.798  0.796  1.0
  Na  Na5  1  0.793  0.206  0.790  1.0
  Na  Na6  1  0.208  0.186  0.792  1.0
  Na  Na7  1  0.792  0.820  0.794  1.0
  Al  Al8  1  0.247  0.496  0.005  1.0
  Al  Al9  1  0.751  0.502  0.003  1.0
  Al  Al10  1  0.500  0.001  0.251  1.0
  Al  Al11  1  0.999  0.749  0.497  1.0
  Al  Al12  1  0.999  0.253  0.500  1.0
  Al  Al13  1  0.498  0.999  0.750  1.0
  Si  Si14  1  0.503  0.249  1.000  1.0
  Si  Si15  1  0.496  0.750  0.001  1.0
  Si  Si16  1  0.999  0.499  0.251  1.0
  Si  Si17  1  0.751  0.002  0.500  1.0
  Si  Si18  1  0.247  0.999  0.498  1.0
  Si  Si19  1  0.999  0.504  0.750  1.0
  N  N20  1  0.004  0.998  0.011  1.0
  N  N21  1  0.499  0.500  0.501  1.0
  O  O22  1  0.360  0.348  0.039  1.0
  O  O23  1  0.641  0.652  0.038  1.0
  O  O24  1  0.145  0.544  0.158  1.0
  O  O25  1  0.857  0.453  0.153  1.0
  O  O26  1  0.539  0.152  0.143  1.0
  O  O27  1  0.462  0.848  0.145  1.0
  O  O28  1  0.345  0.040  0.356  1.0
  O  O29  1  0.656  0.962  0.354  1.0
  O  O30  1  0.042  0.357  0.347  1.0
  O  O31  1  0.953  0.642  0.346  1.0
  O  O32  1  0.155  0.853  0.456  1.0
  O  O33  1  0.843  0.150  0.462  1.0
  O  O34  1  0.147  0.139  0.539  1.0
  O  O35  1  0.852  0.862  0.539  1.0
  O  O36  1  0.036  0.646  0.652  1.0
  O  O37  1  0.964  0.358  0.655  1.0
  O  O38  1  0.655  0.033  0.646  1.0
  O  O39  1  0.341  0.964  0.646  1.0
  O  O40  1  0.462  0.152  0.857  1.0
  O  O41  1  0.535  0.847  0.858  1.0
  O  O42  1  0.179  0.472  0.810  1.0
  O  O43  1  0.816  0.532  0.810  1.0
  O  O44  1  0.081  0.379  0.912  1.0
  O  O45  1  0.925  0.622  0.907  1.0
  O  O46  1  0.129  0.996  0.936  1.0
  O  O47  1  0.883  0.015  0.931  1.0
  O  O48  1  0.993  0.874  0.102  1.0
  O  O49  1  0.009  0.100  0.126  1.0
  O  O50  1  0.346  0.657  0.967  1.0
  O  O51  1  0.652  0.342  0.963  1.0
[/CIF]
.
The compound described by (Na8Al6Si6NO30)2N2 is Chalcostibite-derived structured and crystallizes in the triclinic P1 space group. The structure consists of one ammonia atom inside a Na8Al6Si6NO30 framework. In the Na8Al6Si6NO30 framework, there are eight inequivalent Na sites. In the first Na site, Na(1) is bonded in a 4-coordinate geometry to one O(11), one O(27), one O(29), one O(3), and one O(6) atom. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one O(12), one O(28), one O(4), and one O(5) atom. In the third Na site, Na(3) is bonded to one O(1), one O(28), one O(7), and one O(9) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Al(3)O4 tetrahedra,  a cornercorner with one Al(5)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, and  a cornercorner with one N(1)O4 tetrahedra. In the fourth Na site, Na(4) is bonded to one O(10), one O(2), one O(27), and one O(8) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Al(3)O4 tetrahedra,  a cornercorner with one Al(4)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one N(1)O4 tetrahedra. In the fifth Na site, Na(5) is bonded to one O(15), one O(18), one O(25), and one O(29) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Al(4)O4 tetrahedra,  a cornercorner with one Al(6)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, and  a cornercorner with one N(1)O4 tetrahedra. In the sixth Na site, Na(6) is bonded to one O(16), one O(17), one O(26), and one O(30) atom to form distorted NaO4 tetrahedra that share  a cornercorner with one Al(5)O4 tetrahedra,  a cornercorner with one Al(6)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one N(1)O4 tetrahedra. In the seventh Na site, Na(7) is bonded in a 6-coordinate geometry to one O(13), one O(18), one O(19), one O(21), one O(23), and one O(25) atom. In the eighth Na site, Na(8) is bonded in a 6-coordinate geometry to one O(14), one O(17), one O(20), one O(22), one O(24), and one O(26) atom. There are six inequivalent Al sites. In the first Al site, Al(1) is bonded in a 5-coordinate geometry to one O(1), one O(21), one O(23), one O(29), and one O(3) atom. In the second Al site, Al(2) is bonded in a 5-coordinate geometry to one O(2), one O(22), one O(24), one O(30), and one O(4) atom. In the third Al site, Al(3) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form AlO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. In the fourth Al site, Al(4) is bonded to one O(10), one O(11), one O(14), and one O(15) atom to form AlO4 tetrahedra that share  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. In the fifth Al site, Al(5) is bonded to one O(12), one O(13), one O(16), and one O(9) atom to form AlO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(6)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. In the sixth Al site, Al(6) is bonded to one O(17), one O(18), one O(19), and one O(20) atom to form AlO4 tetrahedra that share  a cornercorner with one Na(5)O4 tetrahedra,  a cornercorner with one Na(6)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. There are six inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(19), one O(30), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(6)O4 tetrahedra,  a cornercorner with one Al(3)O4 tetrahedra, and  a cornercorner with one Al(6)O4 tetrahedra. In the second Si site, Si(2) is bonded to one O(2), one O(20), one O(29), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 tetrahedra,  a cornercorner with one Al(3)O4 tetrahedra, and  a cornercorner with one Al(6)O4 tetrahedra. In the third Si site, Si(3) is bonded to one O(10), one O(3), one O(4), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Al(4)O4 tetrahedra, and  a cornercorner with one Al(5)O4 tetrahedra. In the fourth Si site, Si(4) is bonded to one O(12), one O(14), one O(17), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(6)O4 tetrahedra,  a cornercorner with one Al(3)O4 tetrahedra,  a cornercorner with one Al(4)O4 tetrahedra,  a cornercorner with one Al(5)O4 tetrahedra, and  a cornercorner with one Al(6)O4 tetrahedra. In the fifth Si site, Si(5) is bonded to one O(11), one O(13), one O(18), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(5)O4 tetrahedra,  a cornercorner with one Al(3)O4 tetrahedra,  a cornercorner with one Al(4)O4 tetrahedra,  a cornercorner with one Al(5)O4 tetrahedra, and  a cornercorner with one Al(6)O4 tetrahedra. In the sixth Si site, Si(6) is bonded in a 6-coordinate geometry to one O(15), one O(16), one O(21), one O(22), one O(23), and one O(24) atom. N(1) is bonded to one O(25), one O(26), one O(27), and one O(28) atom to form NO4 tetrahedra that share  a cornercorner with one Na(3)O4 tetrahedra,  a cornercorner with one Na(4)O4 tetrahedra,  a cornercorner with one Na(5)O4 tetrahedra, and  a cornercorner with one Na(6)O4 tetrahedra. There are thirty inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(3), one Al(1), and one Si(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(4), one Al(2), and one Si(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one Al(1), and one Si(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(2), one Al(2), and one Si(3) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(2), one Al(3), and one Si(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(1), one Al(3), and one Si(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Na(3), one Al(3), and one Si(5) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Na(4), one Al(3), and one Si(4) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Na(3), one Al(5), and one Si(3) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Na(4), one Al(4), and one Si(3) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Na(1), one Al(4), and one Si(5) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Na(2), one Al(5), and one Si(4) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Na(7), one Al(5), and one Si(5) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Na(8), one Al(4), and one Si(4) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Na(5), one Al(4), and one Si(6) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Na(6), one Al(5), and one Si(6) atom. In the seventeenth O site, O(17) is bonded to one Na(6), one Na(8), one Al(6), and one Si(4) atom to form distorted corner-sharing ONa2AlSi trigonal pyramids. In the eighteenth O site, O(18) is bonded in a 4-coordinate geometry to one Na(5), one Na(7), one Al(6), and one Si(5) atom. In the nineteenth O site, O(19) is bonded in a 3-coordinate geometry to one Na(7), one Al(6), and one Si(1) atom. In the twentieth O site, O(20) is bonded in a 3-coordinate geometry to one Na(8), one Al(6), and one Si(2) atom. In the twenty-first O site, O(21) is bonded in a 2-coordinate geometry to one Na(7), one Al(1), one Si(6), and one O(23) atom. In the twenty-second O site, O(22) is bonded in a 2-coordinate geometry to one Na(8), one Al(2), one Si(6), and one O(24) atom. In the twenty-third O site, O(23) is bonded to one Na(7), one Al(1), one Si(6), and one O(21) atom to form distorted corner-sharing ONaAlSiO tetrahedra. In the twenty-fourth O site, O(24) is bonded to one Na(8), one Al(2), one Si(6), and one O(22) atom to form distorted ONaAlSiO tetrahedra that share  a cornercorner with one O(23)NaAlSiO tetrahedra and  a cornercorner with one O(17)Na2AlSi trigonal pyramid. In the twenty-fifth O site, O(25) is bonded in a distorted trigonal planar geometry to one Na(5), one Na(7), and one N(1) atom. In the twenty-sixth O site, O(26) is bonded in a distorted trigonal planar geometry to one Na(6), one Na(8), and one N(1) atom. In the twenty-seventh O site, O(27) is bonded in a trigonal planar geometry to one Na(1), one Na(4), and one N(1) atom. In the twenty-eighth O site, O(28) is bonded in a trigonal planar geometry to one Na(2), one Na(3), and one N(1) atom. In the twenty-ninth O site, O(29) is bonded in a 4-coordinate geometry to one Na(1), one Na(5), one Al(1), and one Si(2) atom. In the thirtieth O site, O(30) is bonded in a 3-coordinate geometry to one Na(6), one Al(2), and one Si(1) atom. is represented by the CIF file [CIF]
data_Na4Al3Si3NO15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.134
_cell_length_b   9.231
_cell_length_c   9.237
_cell_angle_alpha   90.179
_cell_angle_beta   90.033
_cell_angle_gamma   90.242
_symmetry_Int_Tables_number   1
_cell_volume   778.790
_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  0.214  0.790  0.208  1.0
  Na  Na1  1  0.789  0.208  0.208  1.0
  Na  Na2  1  0.223  0.220  0.219  1.0
  Na  Na3  1  0.779  0.781  0.216  1.0
  Na  Na4  1  0.206  0.798  0.796  1.0
  Na  Na5  1  0.793  0.206  0.790  1.0
  Na  Na6  1  0.208  0.186  0.792  1.0
  Na  Na7  1  0.792  0.820  0.794  1.0
  Al  Al8  1  0.247  0.496  0.005  1.0
  Al  Al9  1  0.751  0.502  0.003  1.0
  Al  Al10  1  0.500  0.001  0.251  1.0
  Al  Al11  1  0.999  0.749  0.497  1.0
  Al  Al12  1  0.999  0.253  0.500  1.0
  Al  Al13  1  0.498  0.999  0.750  1.0
  Si  Si14  1  0.503  0.249  1.000  1.0
  Si  Si15  1  0.496  0.750  0.001  1.0
  Si  Si16  1  0.999  0.499  0.251  1.0
  Si  Si17  1  0.751  0.002  0.500  1.0
  Si  Si18  1  0.247  0.999  0.498  1.0
  Si  Si19  1  0.999  0.504  0.750  1.0
  N  N20  1  0.004  0.998  0.011  1.0
  N  N21  1  0.499  0.500  0.501  1.0
  O  O22  1  0.360  0.348  0.039  1.0
  O  O23  1  0.641  0.652  0.038  1.0
  O  O24  1  0.145  0.544  0.158  1.0
  O  O25  1  0.857  0.453  0.153  1.0
  O  O26  1  0.539  0.152  0.143  1.0
  O  O27  1  0.462  0.848  0.145  1.0
  O  O28  1  0.345  0.040  0.356  1.0
  O  O29  1  0.656  0.962  0.354  1.0
  O  O30  1  0.042  0.357  0.347  1.0
  O  O31  1  0.953  0.642  0.346  1.0
  O  O32  1  0.155  0.853  0.456  1.0
  O  O33  1  0.843  0.150  0.462  1.0
  O  O34  1  0.147  0.139  0.539  1.0
  O  O35  1  0.852  0.862  0.539  1.0
  O  O36  1  0.036  0.646  0.652  1.0
  O  O37  1  0.964  0.358  0.655  1.0
  O  O38  1  0.655  0.033  0.646  1.0
  O  O39  1  0.341  0.964  0.646  1.0
  O  O40  1  0.462  0.152  0.857  1.0
  O  O41  1  0.535  0.847  0.858  1.0
  O  O42  1  0.179  0.472  0.810  1.0
  O  O43  1  0.816  0.532  0.810  1.0
  O  O44  1  0.081  0.379  0.912  1.0
  O  O45  1  0.925  0.622  0.907  1.0
  O  O46  1  0.129  0.996  0.936  1.0
  O  O47  1  0.883  0.015  0.931  1.0
  O  O48  1  0.993  0.874  0.102  1.0
  O  O49  1  0.009  0.100  0.126  1.0
  O  O50  1  0.346  0.657  0.967  1.0
  O  O51  1  0.652  0.342  0.963  1.0
[/CIF]
.