The structure described by AlPO4 is quartz (alpha)-derived structured and crystallizes in the monoclinic P2/c space group. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to two equivalent O(4) and two equivalent O(6) atoms to form AlO4 tetrahedra that share corners with four equivalent P(2)O4 tetrahedra. In the second Al site, Al(2) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form AlO4 tetrahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with two equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to two equivalent O(3) and two equivalent O(5) atoms to form PO4 tetrahedra that share corners with four equivalent Al(2)O4 tetrahedra. In the second P site, P(2) is bonded to one O(1), one O(2), one O(4), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Al(1)O4 tetrahedra and corners with two equivalent Al(2)O4 tetrahedra. There are six inequivalent O sites. In the first O site, O(6) is bonded in a bent 150 degrees geometry to one Al(1) and one P(2) atom. In the second O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Al(2) and one P(2) atom. In the third O site, O(2) is bonded in a bent 150 degrees geometry to one Al(2) and one P(2) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one Al(2) and one P(1) atom. In the fifth O site, O(4) is bonded in a bent 150 degrees geometry to one Al(1) and one P(2) atom. In the sixth O site, O(5) is bonded in a bent 150 degrees geometry to one Al(2) and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_AlPO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.852
_cell_length_b   8.737
_cell_length_c   10.855
_cell_angle_alpha   89.772
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   460.145
_cell_formula_units_Z   6
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
  Al  Al0  1  0.464  0.750  0.500  1.0
  Al  Al1  1  0.536  0.250  0.500  1.0
  Al  Al2  1  0.741  0.515  0.834  1.0
  Al  Al3  1  0.741  0.985  0.166  1.0
  Al  Al4  1  0.259  0.485  0.166  1.0
  Al  Al5  1  0.259  0.015  0.834  1.0
  P  P6  1  0.036  0.750  0.000  1.0
  P  P7  1  0.964  0.250  0.000  1.0
  P  P8  1  0.764  0.515  0.333  1.0
  P  P9  1  0.764  0.985  0.667  1.0
  P  P10  1  0.236  0.485  0.667  1.0
  P  P11  1  0.236  0.015  0.333  1.0
  O  O12  1  0.065  0.530  0.296  1.0
  O  O13  1  0.065  0.970  0.704  1.0
  O  O14  1  0.935  0.470  0.704  1.0
  O  O15  1  0.935  0.030  0.296  1.0
  O  O16  1  0.597  0.475  0.218  1.0
  O  O17  1  0.597  0.025  0.782  1.0
  O  O18  1  0.403  0.525  0.782  1.0
  O  O19  1  0.403  0.975  0.218  1.0
  O  O20  1  0.852  0.686  0.898  1.0
  O  O21  1  0.852  0.814  0.102  1.0
  O  O22  1  0.148  0.314  0.102  1.0
  O  O23  1  0.148  0.186  0.898  1.0
  O  O24  1  0.668  0.667  0.386  1.0
  O  O25  1  0.668  0.833  0.614  1.0
  O  O26  1  0.332  0.333  0.614  1.0
  O  O27  1  0.332  0.167  0.386  1.0
  O  O28  1  0.779  0.375  0.947  1.0
  O  O29  1  0.779  0.125  0.053  1.0
  O  O30  1  0.221  0.625  0.053  1.0
  O  O31  1  0.221  0.875  0.947  1.0
  O  O32  1  0.737  0.389  0.430  1.0
  O  O33  1  0.737  0.111  0.570  1.0
  O  O34  1  0.263  0.611  0.570  1.0
  O  O35  1  0.263  0.889  0.430  1.0
[/CIF]
.
The structure described by AlPO4 is quartz (alpha)-derived structured and crystallizes in the monoclinic P2/c space group. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to two equivalent O(4) and two equivalent O(6) atoms to form AlO4 tetrahedra that share corners with four equivalent P(2)O4 tetrahedra. In the second Al site, Al(2) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form AlO4 tetrahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with two equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to two equivalent O(3) and two equivalent O(5) atoms to form PO4 tetrahedra that share corners with four equivalent Al(2)O4 tetrahedra. In the second P site, P(2) is bonded to one O(1), one O(2), one O(4), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Al(1)O4 tetrahedra and corners with two equivalent Al(2)O4 tetrahedra. There are six inequivalent O sites. In the first O site, O(6) is bonded in a bent 150 degrees geometry to one Al(1) and one P(2) atom. In the second O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Al(2) and one P(2) atom. In the third O site, O(2) is bonded in a bent 150 degrees geometry to one Al(2) and one P(2) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one Al(2) and one P(1) atom. In the fifth O site, O(4) is bonded in a bent 150 degrees geometry to one Al(1) and one P(2) atom. In the sixth O site, O(5) is bonded in a bent 150 degrees geometry to one Al(2) and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_AlPO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.852
_cell_length_b   8.737
_cell_length_c   10.855
_cell_angle_alpha   89.772
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   460.145
_cell_formula_units_Z   6
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
  Al  Al0  1  0.464  0.750  0.500  1.0
  Al  Al1  1  0.536  0.250  0.500  1.0
  Al  Al2  1  0.741  0.515  0.834  1.0
  Al  Al3  1  0.741  0.985  0.166  1.0
  Al  Al4  1  0.259  0.485  0.166  1.0
  Al  Al5  1  0.259  0.015  0.834  1.0
  P  P6  1  0.036  0.750  0.000  1.0
  P  P7  1  0.964  0.250  0.000  1.0
  P  P8  1  0.764  0.515  0.333  1.0
  P  P9  1  0.764  0.985  0.667  1.0
  P  P10  1  0.236  0.485  0.667  1.0
  P  P11  1  0.236  0.015  0.333  1.0
  O  O12  1  0.065  0.530  0.296  1.0
  O  O13  1  0.065  0.970  0.704  1.0
  O  O14  1  0.935  0.470  0.704  1.0
  O  O15  1  0.935  0.030  0.296  1.0
  O  O16  1  0.597  0.475  0.218  1.0
  O  O17  1  0.597  0.025  0.782  1.0
  O  O18  1  0.403  0.525  0.782  1.0
  O  O19  1  0.403  0.975  0.218  1.0
  O  O20  1  0.852  0.686  0.898  1.0
  O  O21  1  0.852  0.814  0.102  1.0
  O  O22  1  0.148  0.314  0.102  1.0
  O  O23  1  0.148  0.186  0.898  1.0
  O  O24  1  0.668  0.667  0.386  1.0
  O  O25  1  0.668  0.833  0.614  1.0
  O  O26  1  0.332  0.333  0.614  1.0
  O  O27  1  0.332  0.167  0.386  1.0
  O  O28  1  0.779  0.375  0.947  1.0
  O  O29  1  0.779  0.125  0.053  1.0
  O  O30  1  0.221  0.625  0.053  1.0
  O  O31  1  0.221  0.875  0.947  1.0
  O  O32  1  0.737  0.389  0.430  1.0
  O  O33  1  0.737  0.111  0.570  1.0
  O  O34  1  0.263  0.611  0.570  1.0
  O  O35  1  0.263  0.889  0.430  1.0
[/CIF]
.