The structure described by Na2Mo2As3O16 crystallizes in the triclinic P-1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 5-coordinate geometry to one O(12), one O(13), one O(14), one O(3), and one O(4) atom. In the second Na site, Na(2) is bonded in a 5-coordinate geometry to one O(10), one O(11), one O(14), one O(15), one O(16), and one O(9) atom. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(7), and two equivalent O(4) atoms. In the second Mo site, Mo(2) is bonded in a 6-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. There are three inequivalent As sites. In the first As site, As(1) is bonded in a distorted T-shaped geometry to one O(10), one O(6), and one O(9) atom. In the second As site, As(2) is bonded in a distorted trigonal non-coplanar geometry to one O(10), one O(11), and one O(7) atom. In the third As site, As(3) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(11), one O(8), and one O(9) atom. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Mo(1) and one As(3) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Mo(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one Mo(1), and one Mo(2) atom. In the fourth O site, O(4) is bonded to one Na(1), one Mo(2), and two equivalent Mo(1) atoms to form distorted edge-sharing ONaMo3 tetrahedra. In the fifth O site, O(5) is bonded in a single-bond geometry to one Mo(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Mo(2) and one As(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(2), and one As(2) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Mo(2) and one As(3) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Na(2), one As(1), and one As(3) atom. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Na(2), one As(1), and one As(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Na(2), one As(2), and one As(3) atom. In the twelfth O site, O(12) is bonded in an L-shaped geometry to one Na(1) and one O(15) atom. In the thirteenth O site, O(13) is bonded in a bent 120 degrees geometry to one Na(1) and one O(16) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one O(15) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 120 degrees geometry to one Na(2), one O(12), and one O(14) atom. In the sixteenth O site, O(16) is bonded in a distorted bent 120 degrees geometry to one Na(2) and one O(13) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2Mo2As3O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.926
_cell_length_b   11.576
_cell_length_c   9.477
_cell_angle_alpha   105.232
_cell_angle_beta   101.609
_cell_angle_gamma   106.081
_symmetry_Int_Tables_number   1
_cell_volume   770.188
_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  0.829  0.965  0.216  1.0
  Na  Na1  1  0.171  0.035  0.784  1.0
  Na  Na2  1  0.281  0.357  0.471  1.0
  Na  Na3  1  0.719  0.643  0.529  1.0
  Mo  Mo4  1  0.565  0.909  0.850  1.0
  Mo  Mo5  1  0.435  0.091  0.150  1.0
  Mo  Mo6  1  0.741  0.205  0.939  1.0
  Mo  Mo7  1  0.259  0.795  0.061  1.0
  As  As8  1  0.101  0.445  0.187  1.0
  As  As9  1  0.899  0.555  0.813  1.0
  As  As10  1  0.802  0.328  0.370  1.0
  As  As11  1  0.198  0.672  0.630  1.0
  As  As12  1  0.481  0.399  0.153  1.0
  As  As13  1  0.519  0.601  0.847  1.0
  O  O14  1  0.628  0.774  0.900  1.0
  O  O15  1  0.372  0.226  0.100  1.0
  O  O16  1  0.534  0.862  0.656  1.0
  O  O17  1  0.466  0.138  0.344  1.0
  O  O18  1  0.795  0.032  0.942  1.0
  O  O19  1  0.205  0.968  0.058  1.0
  O  O20  1  0.491  0.066  0.901  1.0
  O  O21  1  0.509  0.934  0.099  1.0
  O  O22  1  0.735  0.191  0.754  1.0
  O  O23  1  0.265  0.809  0.246  1.0
  O  O24  1  0.004  0.287  0.045  1.0
  O  O25  1  0.996  0.713  0.955  1.0
  O  O26  1  0.713  0.195  0.190  1.0
  O  O27  1  0.287  0.805  0.810  1.0
  O  O28  1  0.685  0.344  0.005  1.0
  O  O29  1  0.315  0.656  0.995  1.0
  O  O30  1  0.325  0.437  0.272  1.0
  O  O31  1  0.675  0.563  0.728  1.0
  O  O32  1  0.022  0.413  0.348  1.0
  O  O33  1  0.978  0.587  0.652  1.0
  O  O34  1  0.663  0.428  0.327  1.0
  O  O35  1  0.337  0.572  0.673  1.0
  O  O36  1  0.811  0.978  0.492  1.0
  O  O37  1  0.189  0.022  0.508  1.0
  O  O38  1  0.720  0.719  0.187  1.0
  O  O39  1  0.280  0.281  0.813  1.0
  O  O40  1  0.091  0.139  0.371  1.0
  O  O41  1  0.909  0.861  0.629  1.0
  O  O42  1  0.163  0.130  0.512  1.0
  O  O43  1  0.837  0.870  0.488  1.0
  O  O44  1  0.369  0.332  0.736  1.0
  O  O45  1  0.631  0.668  0.264  1.0
[/CIF]
.
The structure described by Na2Mo2As3O16 crystallizes in the triclinic P-1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 5-coordinate geometry to one O(12), one O(13), one O(14), one O(3), and one O(4) atom. In the second Na site, Na(2) is bonded in a 5-coordinate geometry to one O(10), one O(11), one O(14), one O(15), one O(16), and one O(9) atom. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(7), and two equivalent O(4) atoms. In the second Mo site, Mo(2) is bonded in a 6-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. There are three inequivalent As sites. In the first As site, As(1) is bonded in a distorted T-shaped geometry to one O(10), one O(6), and one O(9) atom. In the second As site, As(2) is bonded in a distorted trigonal non-coplanar geometry to one O(10), one O(11), and one O(7) atom. In the third As site, As(3) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(11), one O(8), and one O(9) atom. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Mo(1) and one As(3) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Mo(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one Mo(1), and one Mo(2) atom. In the fourth O site, O(4) is bonded to one Na(1), one Mo(2), and two equivalent Mo(1) atoms to form distorted edge-sharing ONaMo3 tetrahedra. In the fifth O site, O(5) is bonded in a single-bond geometry to one Mo(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Mo(2) and one As(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(2), and one As(2) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Mo(2) and one As(3) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Na(2), one As(1), and one As(3) atom. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Na(2), one As(1), and one As(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Na(2), one As(2), and one As(3) atom. In the twelfth O site, O(12) is bonded in an L-shaped geometry to one Na(1) and one O(15) atom. In the thirteenth O site, O(13) is bonded in a bent 120 degrees geometry to one Na(1) and one O(16) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one O(15) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 120 degrees geometry to one Na(2), one O(12), and one O(14) atom. In the sixteenth O site, O(16) is bonded in a distorted bent 120 degrees geometry to one Na(2) and one O(13) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2Mo2As3O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.926
_cell_length_b   11.576
_cell_length_c   9.477
_cell_angle_alpha   105.232
_cell_angle_beta   101.609
_cell_angle_gamma   106.081
_symmetry_Int_Tables_number   1
_cell_volume   770.188
_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  0.829  0.965  0.216  1.0
  Na  Na1  1  0.171  0.035  0.784  1.0
  Na  Na2  1  0.281  0.357  0.471  1.0
  Na  Na3  1  0.719  0.643  0.529  1.0
  Mo  Mo4  1  0.565  0.909  0.850  1.0
  Mo  Mo5  1  0.435  0.091  0.150  1.0
  Mo  Mo6  1  0.741  0.205  0.939  1.0
  Mo  Mo7  1  0.259  0.795  0.061  1.0
  As  As8  1  0.101  0.445  0.187  1.0
  As  As9  1  0.899  0.555  0.813  1.0
  As  As10  1  0.802  0.328  0.370  1.0
  As  As11  1  0.198  0.672  0.630  1.0
  As  As12  1  0.481  0.399  0.153  1.0
  As  As13  1  0.519  0.601  0.847  1.0
  O  O14  1  0.628  0.774  0.900  1.0
  O  O15  1  0.372  0.226  0.100  1.0
  O  O16  1  0.534  0.862  0.656  1.0
  O  O17  1  0.466  0.138  0.344  1.0
  O  O18  1  0.795  0.032  0.942  1.0
  O  O19  1  0.205  0.968  0.058  1.0
  O  O20  1  0.491  0.066  0.901  1.0
  O  O21  1  0.509  0.934  0.099  1.0
  O  O22  1  0.735  0.191  0.754  1.0
  O  O23  1  0.265  0.809  0.246  1.0
  O  O24  1  0.004  0.287  0.045  1.0
  O  O25  1  0.996  0.713  0.955  1.0
  O  O26  1  0.713  0.195  0.190  1.0
  O  O27  1  0.287  0.805  0.810  1.0
  O  O28  1  0.685  0.344  0.005  1.0
  O  O29  1  0.315  0.656  0.995  1.0
  O  O30  1  0.325  0.437  0.272  1.0
  O  O31  1  0.675  0.563  0.728  1.0
  O  O32  1  0.022  0.413  0.348  1.0
  O  O33  1  0.978  0.587  0.652  1.0
  O  O34  1  0.663  0.428  0.327  1.0
  O  O35  1  0.337  0.572  0.673  1.0
  O  O36  1  0.811  0.978  0.492  1.0
  O  O37  1  0.189  0.022  0.508  1.0
  O  O38  1  0.720  0.719  0.187  1.0
  O  O39  1  0.280  0.281  0.813  1.0
  O  O40  1  0.091  0.139  0.371  1.0
  O  O41  1  0.909  0.861  0.629  1.0
  O  O42  1  0.163  0.130  0.512  1.0
  O  O43  1  0.837  0.870  0.488  1.0
  O  O44  1  0.369  0.332  0.736  1.0
  O  O45  1  0.631  0.668  0.264  1.0
[/CIF]
.