The structure described by Sr3P14 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a body-centered cubic geometry to two equivalent P(1), two equivalent P(2), two equivalent P(4), and two equivalent P(5) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one P(1), one P(2), one P(3), one P(6), one P(7), two equivalent P(4), and two equivalent P(5) atoms. There are seven inequivalent P sites. In the first P site, P(1) is bonded in a see-saw-like geometry to one Sr(1), one Sr(2), one P(2), and one P(3) atom. In the second P site, P(2) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), one P(1), one P(6), and one P(7) atom. In the third P site, P(3) is bonded to one Sr(2), one P(1), one P(4), and one P(5) atom to form distorted corner-sharing PSrP3 tetrahedra. In the fourth P site, P(4) is bonded to one Sr(1), two equivalent Sr(2), one P(3), and one P(6) atom to form PSr3P2 square pyramids that share  a cornercorner with one P(4)Sr3P2 square pyramid, corners with two equivalent P(3)SrP3 tetrahedra, corners with three equivalent P(5)Sr3P2 trigonal bipyramids,  an edgeedge with one P(4)Sr3P2 square pyramid, and edges with two equivalent P(5)Sr3P2 trigonal bipyramids. In the fifth P site, P(5) is bonded to one Sr(1), two equivalent Sr(2), one P(3), and one P(7) atom to form PSr3P2 trigonal bipyramids that share corners with three equivalent P(4)Sr3P2 square pyramids, corners with two equivalent P(3)SrP3 tetrahedra, corners with three equivalent P(5)Sr3P2 trigonal bipyramids, and edges with two equivalent P(4)Sr3P2 square pyramids. In the sixth P site, P(6) is bonded in a 4-coordinate geometry to one Sr(2), one P(2), one P(4), and one P(7) atom. In the seventh P site, P(7) is bonded in a 4-coordinate geometry to one Sr(2), one P(2), one P(5), and one P(6) atom. is represented by the CIF file [CIF]
data_Sr3P14
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.368
_cell_length_b   9.926
_cell_length_c   12.802
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   89.802
_symmetry_Int_Tables_number   1
_cell_volume   809.222
_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
  Sr  Sr0  1  0.500  0.500  0.000  1.0
  Sr  Sr1  1  0.000  0.000  0.500  1.0
  Sr  Sr2  1  0.693  0.113  0.843  1.0
  Sr  Sr3  1  0.807  0.387  0.343  1.0
  Sr  Sr4  1  0.307  0.887  0.157  1.0
  Sr  Sr5  1  0.193  0.613  0.657  1.0
  P  P6  1  0.337  0.049  0.677  1.0
  P  P7  1  0.163  0.451  0.177  1.0
  P  P8  1  0.663  0.951  0.323  1.0
  P  P9  1  0.837  0.549  0.823  1.0
  P  P10  1  0.576  0.141  0.583  1.0
  P  P11  1  0.924  0.359  0.083  1.0
  P  P12  1  0.424  0.859  0.417  1.0
  P  P13  1  0.076  0.641  0.917  1.0
  P  P14  1  0.147  0.229  0.709  1.0
  P  P15  1  0.353  0.271  0.209  1.0
  P  P16  1  0.853  0.771  0.291  1.0
  P  P17  1  0.647  0.729  0.791  1.0
  P  P18  1  0.104  0.318  0.553  1.0
  P  P19  1  0.396  0.182  0.053  1.0
  P  P20  1  0.896  0.682  0.447  1.0
  P  P21  1  0.604  0.818  0.947  1.0
  P  P22  1  0.388  0.361  0.773  1.0
  P  P23  1  0.112  0.139  0.273  1.0
  P  P24  1  0.612  0.639  0.227  1.0
  P  P25  1  0.888  0.861  0.727  1.0
  P  P26  1  0.073  0.185  0.003  1.0
  P  P27  1  0.427  0.315  0.503  1.0
  P  P28  1  0.927  0.815  0.997  1.0
  P  P29  1  0.573  0.685  0.497  1.0
  P  P30  1  0.614  0.353  0.648  1.0
  P  P31  1  0.886  0.147  0.148  1.0
  P  P32  1  0.386  0.647  0.352  1.0
  P  P33  1  0.114  0.853  0.852  1.0
[/CIF]
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The structure described by Sr3P14 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a body-centered cubic geometry to two equivalent P(1), two equivalent P(2), two equivalent P(4), and two equivalent P(5) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one P(1), one P(2), one P(3), one P(6), one P(7), two equivalent P(4), and two equivalent P(5) atoms. There are seven inequivalent P sites. In the first P site, P(1) is bonded in a see-saw-like geometry to one Sr(1), one Sr(2), one P(2), and one P(3) atom. In the second P site, P(2) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), one P(1), one P(6), and one P(7) atom. In the third P site, P(3) is bonded to one Sr(2), one P(1), one P(4), and one P(5) atom to form distorted corner-sharing PSrP3 tetrahedra. In the fourth P site, P(4) is bonded to one Sr(1), two equivalent Sr(2), one P(3), and one P(6) atom to form PSr3P2 square pyramids that share  a cornercorner with one P(4)Sr3P2 square pyramid, corners with two equivalent P(3)SrP3 tetrahedra, corners with three equivalent P(5)Sr3P2 trigonal bipyramids,  an edgeedge with one P(4)Sr3P2 square pyramid, and edges with two equivalent P(5)Sr3P2 trigonal bipyramids. In the fifth P site, P(5) is bonded to one Sr(1), two equivalent Sr(2), one P(3), and one P(7) atom to form PSr3P2 trigonal bipyramids that share corners with three equivalent P(4)Sr3P2 square pyramids, corners with two equivalent P(3)SrP3 tetrahedra, corners with three equivalent P(5)Sr3P2 trigonal bipyramids, and edges with two equivalent P(4)Sr3P2 square pyramids. In the sixth P site, P(6) is bonded in a 4-coordinate geometry to one Sr(2), one P(2), one P(4), and one P(7) atom. In the seventh P site, P(7) is bonded in a 4-coordinate geometry to one Sr(2), one P(2), one P(5), and one P(6) atom. is represented by the CIF file [CIF]
data_Sr3P14
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.368
_cell_length_b   9.926
_cell_length_c   12.802
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   89.802
_symmetry_Int_Tables_number   1
_cell_volume   809.222
_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
  Sr  Sr0  1  0.500  0.500  0.000  1.0
  Sr  Sr1  1  0.000  0.000  0.500  1.0
  Sr  Sr2  1  0.693  0.113  0.843  1.0
  Sr  Sr3  1  0.807  0.387  0.343  1.0
  Sr  Sr4  1  0.307  0.887  0.157  1.0
  Sr  Sr5  1  0.193  0.613  0.657  1.0
  P  P6  1  0.337  0.049  0.677  1.0
  P  P7  1  0.163  0.451  0.177  1.0
  P  P8  1  0.663  0.951  0.323  1.0
  P  P9  1  0.837  0.549  0.823  1.0
  P  P10  1  0.576  0.141  0.583  1.0
  P  P11  1  0.924  0.359  0.083  1.0
  P  P12  1  0.424  0.859  0.417  1.0
  P  P13  1  0.076  0.641  0.917  1.0
  P  P14  1  0.147  0.229  0.709  1.0
  P  P15  1  0.353  0.271  0.209  1.0
  P  P16  1  0.853  0.771  0.291  1.0
  P  P17  1  0.647  0.729  0.791  1.0
  P  P18  1  0.104  0.318  0.553  1.0
  P  P19  1  0.396  0.182  0.053  1.0
  P  P20  1  0.896  0.682  0.447  1.0
  P  P21  1  0.604  0.818  0.947  1.0
  P  P22  1  0.388  0.361  0.773  1.0
  P  P23  1  0.112  0.139  0.273  1.0
  P  P24  1  0.612  0.639  0.227  1.0
  P  P25  1  0.888  0.861  0.727  1.0
  P  P26  1  0.073  0.185  0.003  1.0
  P  P27  1  0.427  0.315  0.503  1.0
  P  P28  1  0.927  0.815  0.997  1.0
  P  P29  1  0.573  0.685  0.497  1.0
  P  P30  1  0.614  0.353  0.648  1.0
  P  P31  1  0.886  0.147  0.148  1.0
  P  P32  1  0.386  0.647  0.352  1.0
  P  P33  1  0.114  0.853  0.852  1.0
[/CIF]
.