The material structure described by K3AlP2 is alpha Pu-derived structured and crystallizes in the triclinic P-1 space group. There are twelve inequivalent K sites. In the first K site, K(1) is bonded in a 15-coordinate geometry to one K(3), one K(4), one K(6), one K(7), one K(8), one K(9), one Al(3), two equivalent Al(2), one P(1), one P(3), one P(5), one P(8), and two equivalent P(2) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to two equivalent Al(1), one P(1), one P(3), one P(6), one P(7), and two equivalent P(4) atoms. In the third K site, K(3) is bonded in a 4-coordinate geometry to one K(1), one P(2), one P(3), one P(4), and one P(5) atom. In the fourth K site, K(4) is bonded in a 4-coordinate geometry to one K(1), one P(2), one P(3), one P(4), and one P(5) atom. In the fifth K site, K(5) is bonded in a 4-coordinate geometry to one P(1), one P(4), one P(6), and one P(7) atom. In the sixth K site, K(6) is bonded in a 4-coordinate geometry to one K(1), one P(1), one P(4), and two equivalent P(2) atoms. In the seventh K site, K(7) is bonded in a 4-coordinate geometry to one K(1), one P(1), one P(2), one P(6), and one P(8) atom. In the eighth K site, K(8) is bonded in a 6-coordinate geometry to one K(1), one Al(3), one Al(4), one P(3), one P(6), one P(7), and one P(8) atom. In the ninth K site, K(9) is bonded in a 6-coordinate geometry to one K(1), one Al(3), one Al(4), one P(1), one P(5), one P(7), and one P(8) atom. In the tenth K site, K(10) is bonded in a 3-coordinate geometry to one P(1), one P(3), one P(4), and one P(6) atom. In the eleventh K site, K(11) is bonded in a 4-coordinate geometry to one P(5), one P(6), and two equivalent P(8) atoms. In the twelfth K site, K(12) is bonded in a 3-coordinate geometry to one P(5), one P(6), and two equivalent P(7) atoms. There are four inequivalent Al sites. In the first Al site, Al(1) is bonded to two equivalent K(2), one P(1), one P(3), and two equivalent P(4) atoms to form a mixture of distorted edge and face-sharing AlK2P4 tetrahedra. In the second Al site, Al(2) is bonded to two equivalent K(1), one P(1), one P(3), and two equivalent P(2) atoms to form a mixture of distorted edge and face-sharing AlK2P4 tetrahedra. In the third Al site, Al(3) is bonded in a 3-coordinate geometry to one K(1), one K(8), one K(9), one P(5), one P(7), and one P(8) atom. In the fourth Al site, Al(4) is bonded in a distorted trigonal planar geometry to one K(8), one K(9), one P(6), one P(7), and one P(8) atom. There are eight inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to one K(1), one K(10), one K(2), one K(5), one K(6), one K(7), one K(9), one Al(1), and one Al(2) atom. In the second P site, P(2) is bonded in a 9-coordinate geometry to one K(3), one K(4), one K(7), two equivalent K(1), two equivalent K(6), and two equivalent Al(2) atoms. In the third P site, P(3) is bonded in a 8-coordinate geometry to one K(1), one K(10), one K(2), one K(3), one K(4), one K(8), one Al(1), and one Al(2) atom. In the fourth P site, P(4) is bonded in a 8-coordinate geometry to one K(10), one K(3), one K(4), one K(5), one K(6), two equivalent K(2), and two equivalent Al(1) atoms. In the fifth P site, P(5) is bonded in a 7-coordinate geometry to one K(1), one K(11), one K(12), one K(3), one K(4), one K(9), and one Al(3) atom. In the sixth P site, P(6) is bonded in a 8-coordinate geometry to one K(10), one K(11), one K(12), one K(2), one K(5), one K(7), one K(8), and one Al(4) atom. In the seventh P site, P(7) is bonded in a 8-coordinate geometry to one K(2), one K(5), one K(8), one K(9), two equivalent K(12), one Al(3), and one Al(4) atom. In the eighth P site, P(8) is bonded in a 2-coordinate geometry to one K(1), one K(7), one K(8), one K(9), two equivalent K(11), one Al(3), and one Al(4) atom. is represented by the CIF card [CIF]
data_K3AlP2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.855
_cell_length_b   11.850
_cell_length_c   15.227
_cell_angle_alpha   72.608
_cell_angle_beta   73.357
_cell_angle_gamma   71.699
_symmetry_Int_Tables_number   1
_cell_volume   1414.655
_cell_formula_units_Z   8
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
  K  K0  1  0.345  0.915  0.693  1.0
  K  K1  1  0.655  0.085  0.307  1.0
  K  K2  1  0.819  0.399  0.692  1.0
  K  K3  1  0.181  0.601  0.308  1.0
  K  K4  1  0.813  0.764  0.681  1.0
  K  K5  1  0.187  0.236  0.319  1.0
  K  K6  1  0.224  0.747  0.619  1.0
  K  K7  1  0.776  0.253  0.381  1.0
  K  K8  1  0.160  0.420  0.757  1.0
  K  K9  1  0.840  0.580  0.243  1.0
  K  K10  1  0.981  0.108  0.584  1.0
  K  K11  1  0.019  0.892  0.416  1.0
  K  K12  1  0.532  0.082  0.744  1.0
  K  K13  1  0.468  0.918  0.256  1.0
  K  K14  1  0.487  0.575  0.839  1.0
  K  K15  1  0.513  0.425  0.161  1.0
  K  K16  1  0.032  0.097  0.848  1.0
  K  K17  1  0.968  0.903  0.152  1.0
  K  K18  1  0.508  0.377  0.583  1.0
  K  K19  1  0.492  0.623  0.417  1.0
  K  K20  1  0.319  0.084  0.025  1.0
  K  K21  1  0.681  0.916  0.975  1.0
  K  K22  1  0.823  0.620  0.978  1.0
  K  K23  1  0.177  0.380  0.022  1.0
  Al  Al24  1  0.155  0.388  0.510  1.0
  Al  Al25  1  0.845  0.612  0.490  1.0
  Al  Al26  1  0.406  0.141  0.509  1.0
  Al  Al27  1  0.594  0.859  0.491  1.0
  Al  Al28  1  0.152  0.778  0.927  1.0
  Al  Al29  1  0.848  0.222  0.073  1.0
  Al  Al30  1  0.639  0.266  0.946  1.0
  Al  Al31  1  0.361  0.734  0.054  1.0
  P  P32  1  0.217  0.218  0.641  1.0
  P  P33  1  0.783  0.782  0.359  1.0
  P  P34  1  0.330  0.986  0.462  1.0
  P  P35  1  0.670  0.014  0.538  1.0
  P  P36  1  0.595  0.664  0.604  1.0
  P  P37  1  0.405  0.336  0.396  1.0
  P  P38  1  0.095  0.588  0.540  1.0
  P  P39  1  0.905  0.412  0.460  1.0
  P  P40  1  0.999  0.824  0.820  1.0
  P  P41  1  0.001  0.176  0.180  1.0
  P  P42  1  0.485  0.294  0.844  1.0
  P  P43  1  0.515  0.706  0.156  1.0
  P  P44  1  0.840  0.366  0.930  1.0
  P  P45  1  0.160  0.634  0.070  1.0
  P  P46  1  0.361  0.872  0.910  1.0
  P  P47  1  0.639  0.128  0.090  1.0
[/CIF]
.
The material structure described by K3AlP2 is alpha Pu-derived structured and crystallizes in the triclinic P-1 space group. There are twelve inequivalent K sites. In the first K site, K(1) is bonded in a 15-coordinate geometry to one K(3), one K(4), one K(6), one K(7), one K(8), one K(9), one Al(3), two equivalent Al(2), one P(1), one P(3), one P(5), one P(8), and two equivalent P(2) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to two equivalent Al(1), one P(1), one P(3), one P(6), one P(7), and two equivalent P(4) atoms. In the third K site, K(3) is bonded in a 4-coordinate geometry to one K(1), one P(2), one P(3), one P(4), and one P(5) atom. In the fourth K site, K(4) is bonded in a 4-coordinate geometry to one K(1), one P(2), one P(3), one P(4), and one P(5) atom. In the fifth K site, K(5) is bonded in a 4-coordinate geometry to one P(1), one P(4), one P(6), and one P(7) atom. In the sixth K site, K(6) is bonded in a 4-coordinate geometry to one K(1), one P(1), one P(4), and two equivalent P(2) atoms. In the seventh K site, K(7) is bonded in a 4-coordinate geometry to one K(1), one P(1), one P(2), one P(6), and one P(8) atom. In the eighth K site, K(8) is bonded in a 6-coordinate geometry to one K(1), one Al(3), one Al(4), one P(3), one P(6), one P(7), and one P(8) atom. In the ninth K site, K(9) is bonded in a 6-coordinate geometry to one K(1), one Al(3), one Al(4), one P(1), one P(5), one P(7), and one P(8) atom. In the tenth K site, K(10) is bonded in a 3-coordinate geometry to one P(1), one P(3), one P(4), and one P(6) atom. In the eleventh K site, K(11) is bonded in a 4-coordinate geometry to one P(5), one P(6), and two equivalent P(8) atoms. In the twelfth K site, K(12) is bonded in a 3-coordinate geometry to one P(5), one P(6), and two equivalent P(7) atoms. There are four inequivalent Al sites. In the first Al site, Al(1) is bonded to two equivalent K(2), one P(1), one P(3), and two equivalent P(4) atoms to form a mixture of distorted edge and face-sharing AlK2P4 tetrahedra. In the second Al site, Al(2) is bonded to two equivalent K(1), one P(1), one P(3), and two equivalent P(2) atoms to form a mixture of distorted edge and face-sharing AlK2P4 tetrahedra. In the third Al site, Al(3) is bonded in a 3-coordinate geometry to one K(1), one K(8), one K(9), one P(5), one P(7), and one P(8) atom. In the fourth Al site, Al(4) is bonded in a distorted trigonal planar geometry to one K(8), one K(9), one P(6), one P(7), and one P(8) atom. There are eight inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to one K(1), one K(10), one K(2), one K(5), one K(6), one K(7), one K(9), one Al(1), and one Al(2) atom. In the second P site, P(2) is bonded in a 9-coordinate geometry to one K(3), one K(4), one K(7), two equivalent K(1), two equivalent K(6), and two equivalent Al(2) atoms. In the third P site, P(3) is bonded in a 8-coordinate geometry to one K(1), one K(10), one K(2), one K(3), one K(4), one K(8), one Al(1), and one Al(2) atom. In the fourth P site, P(4) is bonded in a 8-coordinate geometry to one K(10), one K(3), one K(4), one K(5), one K(6), two equivalent K(2), and two equivalent Al(1) atoms. In the fifth P site, P(5) is bonded in a 7-coordinate geometry to one K(1), one K(11), one K(12), one K(3), one K(4), one K(9), and one Al(3) atom. In the sixth P site, P(6) is bonded in a 8-coordinate geometry to one K(10), one K(11), one K(12), one K(2), one K(5), one K(7), one K(8), and one Al(4) atom. In the seventh P site, P(7) is bonded in a 8-coordinate geometry to one K(2), one K(5), one K(8), one K(9), two equivalent K(12), one Al(3), and one Al(4) atom. In the eighth P site, P(8) is bonded in a 2-coordinate geometry to one K(1), one K(7), one K(8), one K(9), two equivalent K(11), one Al(3), and one Al(4) atom. is represented by the CIF card [CIF]
data_K3AlP2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.855
_cell_length_b   11.850
_cell_length_c   15.227
_cell_angle_alpha   72.608
_cell_angle_beta   73.357
_cell_angle_gamma   71.699
_symmetry_Int_Tables_number   1
_cell_volume   1414.655
_cell_formula_units_Z   8
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
  K  K0  1  0.345  0.915  0.693  1.0
  K  K1  1  0.655  0.085  0.307  1.0
  K  K2  1  0.819  0.399  0.692  1.0
  K  K3  1  0.181  0.601  0.308  1.0
  K  K4  1  0.813  0.764  0.681  1.0
  K  K5  1  0.187  0.236  0.319  1.0
  K  K6  1  0.224  0.747  0.619  1.0
  K  K7  1  0.776  0.253  0.381  1.0
  K  K8  1  0.160  0.420  0.757  1.0
  K  K9  1  0.840  0.580  0.243  1.0
  K  K10  1  0.981  0.108  0.584  1.0
  K  K11  1  0.019  0.892  0.416  1.0
  K  K12  1  0.532  0.082  0.744  1.0
  K  K13  1  0.468  0.918  0.256  1.0
  K  K14  1  0.487  0.575  0.839  1.0
  K  K15  1  0.513  0.425  0.161  1.0
  K  K16  1  0.032  0.097  0.848  1.0
  K  K17  1  0.968  0.903  0.152  1.0
  K  K18  1  0.508  0.377  0.583  1.0
  K  K19  1  0.492  0.623  0.417  1.0
  K  K20  1  0.319  0.084  0.025  1.0
  K  K21  1  0.681  0.916  0.975  1.0
  K  K22  1  0.823  0.620  0.978  1.0
  K  K23  1  0.177  0.380  0.022  1.0
  Al  Al24  1  0.155  0.388  0.510  1.0
  Al  Al25  1  0.845  0.612  0.490  1.0
  Al  Al26  1  0.406  0.141  0.509  1.0
  Al  Al27  1  0.594  0.859  0.491  1.0
  Al  Al28  1  0.152  0.778  0.927  1.0
  Al  Al29  1  0.848  0.222  0.073  1.0
  Al  Al30  1  0.639  0.266  0.946  1.0
  Al  Al31  1  0.361  0.734  0.054  1.0
  P  P32  1  0.217  0.218  0.641  1.0
  P  P33  1  0.783  0.782  0.359  1.0
  P  P34  1  0.330  0.986  0.462  1.0
  P  P35  1  0.670  0.014  0.538  1.0
  P  P36  1  0.595  0.664  0.604  1.0
  P  P37  1  0.405  0.336  0.396  1.0
  P  P38  1  0.095  0.588  0.540  1.0
  P  P39  1  0.905  0.412  0.460  1.0
  P  P40  1  0.999  0.824  0.820  1.0
  P  P41  1  0.001  0.176  0.180  1.0
  P  P42  1  0.485  0.294  0.844  1.0
  P  P43  1  0.515  0.706  0.156  1.0
  P  P44  1  0.840  0.366  0.930  1.0
  P  P45  1  0.160  0.634  0.070  1.0
  P  P46  1  0.361  0.872  0.910  1.0
  P  P47  1  0.639  0.128  0.090  1.0
[/CIF]
.