The structure described by BeP2N4 crystallizes in the trigonal R-3 space group. Be(1) is bonded to one N(1), one N(2), one N(3), and one N(4) atom to form BeN4 tetrahedra that share corners with four equivalent P(1)N4 tetrahedra and corners with four equivalent P(2)N4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one N(1), one N(2), and two equivalent N(4) atoms to form PN4 tetrahedra that share corners with two equivalent P(1)N4 tetrahedra, corners with two equivalent P(2)N4 tetrahedra, and corners with four equivalent Be(1)N4 tetrahedra. In the second P site, P(2) is bonded to one N(1), one N(2), and two equivalent N(3) atoms to form PN4 tetrahedra that share corners with two equivalent P(1)N4 tetrahedra, corners with two equivalent P(2)N4 tetrahedra, and corners with four equivalent Be(1)N4 tetrahedra. There are four inequivalent N sites. In the first N site, N(3) is bonded in a trigonal planar geometry to one Be(1) and two equivalent P(2) atoms. In the second N site, N(4) is bonded in a trigonal planar geometry to one Be(1) and two equivalent P(1) atoms. In the third N site, N(1) is bonded in a trigonal planar geometry to one Be(1), one P(1), and one P(2) atom. In the fourth N site, N(2) is bonded in a trigonal planar geometry to one Be(1), one P(1), and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Be(PN2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.890
_cell_length_b   7.890
_cell_length_c   7.890
_cell_angle_alpha   108.149
_cell_angle_beta   108.149
_cell_angle_gamma   108.149
_symmetry_Int_Tables_number   1
_cell_volume   395.460
_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
  Be  Be0  1  0.962  0.732  0.556  1.0
  Be  Be1  1  0.556  0.962  0.732  1.0
  Be  Be2  1  0.732  0.556  0.962  1.0
  Be  Be3  1  0.038  0.268  0.444  1.0
  Be  Be4  1  0.444  0.038  0.268  1.0
  Be  Be5  1  0.268  0.444  0.038  1.0
  P  P6  1  0.601  0.777  0.370  1.0
  P  P7  1  0.370  0.601  0.777  1.0
  P  P8  1  0.777  0.370  0.601  1.0
  P  P9  1  0.399  0.223  0.630  1.0
  P  P10  1  0.630  0.399  0.223  1.0
  P  P11  1  0.223  0.630  0.399  1.0
  P  P12  1  0.930  0.113  0.708  1.0
  P  P13  1  0.708  0.930  0.113  1.0
  P  P14  1  0.113  0.708  0.930  1.0
  P  P15  1  0.070  0.887  0.292  1.0
  P  P16  1  0.292  0.070  0.887  1.0
  P  P17  1  0.887  0.292  0.070  1.0
  N  N18  1  0.832  0.875  0.548  1.0
  N  N19  1  0.548  0.832  0.875  1.0
  N  N20  1  0.875  0.548  0.832  1.0
  N  N21  1  0.168  0.125  0.452  1.0
  N  N22  1  0.452  0.168  0.125  1.0
  N  N23  1  0.125  0.452  0.168  1.0
  N  N24  1  0.087  0.751  0.413  1.0
  N  N25  1  0.413  0.087  0.751  1.0
  N  N26  1  0.751  0.413  0.087  1.0
  N  N27  1  0.913  0.249  0.587  1.0
  N  N28  1  0.587  0.913  0.249  1.0
  N  N29  1  0.249  0.587  0.913  1.0
  N  N30  1  0.136  0.836  0.803  1.0
  N  N31  1  0.803  0.136  0.836  1.0
  N  N32  1  0.836  0.803  0.136  1.0
  N  N33  1  0.864  0.164  0.197  1.0
  N  N34  1  0.197  0.864  0.164  1.0
  N  N35  1  0.164  0.197  0.864  1.0
  N  N36  1  0.787  0.481  0.457  1.0
  N  N37  1  0.457  0.787  0.481  1.0
  N  N38  1  0.481  0.457  0.787  1.0
  N  N39  1  0.213  0.519  0.543  1.0
  N  N40  1  0.543  0.213  0.519  1.0
  N  N41  1  0.519  0.543  0.213  1.0
[/CIF]
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The structure described by BeP2N4 crystallizes in the trigonal R-3 space group. Be(1) is bonded to one N(1), one N(2), one N(3), and one N(4) atom to form BeN4 tetrahedra that share corners with four equivalent P(1)N4 tetrahedra and corners with four equivalent P(2)N4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one N(1), one N(2), and two equivalent N(4) atoms to form PN4 tetrahedra that share corners with two equivalent P(1)N4 tetrahedra, corners with two equivalent P(2)N4 tetrahedra, and corners with four equivalent Be(1)N4 tetrahedra. In the second P site, P(2) is bonded to one N(1), one N(2), and two equivalent N(3) atoms to form PN4 tetrahedra that share corners with two equivalent P(1)N4 tetrahedra, corners with two equivalent P(2)N4 tetrahedra, and corners with four equivalent Be(1)N4 tetrahedra. There are four inequivalent N sites. In the first N site, N(3) is bonded in a trigonal planar geometry to one Be(1) and two equivalent P(2) atoms. In the second N site, N(4) is bonded in a trigonal planar geometry to one Be(1) and two equivalent P(1) atoms. In the third N site, N(1) is bonded in a trigonal planar geometry to one Be(1), one P(1), and one P(2) atom. In the fourth N site, N(2) is bonded in a trigonal planar geometry to one Be(1), one P(1), and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Be(PN2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.890
_cell_length_b   7.890
_cell_length_c   7.890
_cell_angle_alpha   108.149
_cell_angle_beta   108.149
_cell_angle_gamma   108.149
_symmetry_Int_Tables_number   1
_cell_volume   395.460
_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
  Be  Be0  1  0.962  0.732  0.556  1.0
  Be  Be1  1  0.556  0.962  0.732  1.0
  Be  Be2  1  0.732  0.556  0.962  1.0
  Be  Be3  1  0.038  0.268  0.444  1.0
  Be  Be4  1  0.444  0.038  0.268  1.0
  Be  Be5  1  0.268  0.444  0.038  1.0
  P  P6  1  0.601  0.777  0.370  1.0
  P  P7  1  0.370  0.601  0.777  1.0
  P  P8  1  0.777  0.370  0.601  1.0
  P  P9  1  0.399  0.223  0.630  1.0
  P  P10  1  0.630  0.399  0.223  1.0
  P  P11  1  0.223  0.630  0.399  1.0
  P  P12  1  0.930  0.113  0.708  1.0
  P  P13  1  0.708  0.930  0.113  1.0
  P  P14  1  0.113  0.708  0.930  1.0
  P  P15  1  0.070  0.887  0.292  1.0
  P  P16  1  0.292  0.070  0.887  1.0
  P  P17  1  0.887  0.292  0.070  1.0
  N  N18  1  0.832  0.875  0.548  1.0
  N  N19  1  0.548  0.832  0.875  1.0
  N  N20  1  0.875  0.548  0.832  1.0
  N  N21  1  0.168  0.125  0.452  1.0
  N  N22  1  0.452  0.168  0.125  1.0
  N  N23  1  0.125  0.452  0.168  1.0
  N  N24  1  0.087  0.751  0.413  1.0
  N  N25  1  0.413  0.087  0.751  1.0
  N  N26  1  0.751  0.413  0.087  1.0
  N  N27  1  0.913  0.249  0.587  1.0
  N  N28  1  0.587  0.913  0.249  1.0
  N  N29  1  0.249  0.587  0.913  1.0
  N  N30  1  0.136  0.836  0.803  1.0
  N  N31  1  0.803  0.136  0.836  1.0
  N  N32  1  0.836  0.803  0.136  1.0
  N  N33  1  0.864  0.164  0.197  1.0
  N  N34  1  0.197  0.864  0.164  1.0
  N  N35  1  0.164  0.197  0.864  1.0
  N  N36  1  0.787  0.481  0.457  1.0
  N  N37  1  0.457  0.787  0.481  1.0
  N  N38  1  0.481  0.457  0.787  1.0
  N  N39  1  0.213  0.519  0.543  1.0
  N  N40  1  0.543  0.213  0.519  1.0
  N  N41  1  0.519  0.543  0.213  1.0
[/CIF]
.