The structure described by (Cr4PO16)2(N2)3 is Indium-derived structured and crystallizes in the trigonal R3m space group. The structure is zero-dimensional and consists of nine ammonia atoms and three Cr4PO16 clusters. In each Cr4PO16 cluster, there are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form CrO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra. In the second Cr site, Cr(2) is bonded to one O(4) and three equivalent O(5) atoms to form CrO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra. P(1) is bonded to one O(4) and three equivalent O(1) atoms to form PO4 tetrahedra that share  a cornercorner with one Cr(2)O4 tetrahedra and corners with three equivalent Cr(1)O4 tetrahedra. There are five inequivalent O sites. In the first O site, O(3) is bonded in a single-bond geometry to one Cr(1) atom. In the second O site, O(4) is bonded in a linear geometry to one Cr(2) and one P(1) atom. In the third O site, O(5) is bonded in a single-bond geometry to one Cr(2) atom. In the fourth O site, O(1) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the fifth O site, O(2) is bonded in a single-bond geometry to one Cr(1) atom. is represented by the CIF file [CIF]
data_Cr4PN3O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.883
_cell_length_b   7.883
_cell_length_c   7.883
_cell_angle_alpha   102.217
_cell_angle_beta   102.217
_cell_angle_gamma   102.217
_symmetry_Int_Tables_number   1
_cell_volume   450.763
_cell_formula_units_Z   1
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
  Cr  Cr0  1  0.373  0.754  0.373  1.0
  Cr  Cr1  1  0.373  0.373  0.754  1.0
  Cr  Cr2  1  0.754  0.373  0.373  1.0
  Cr  Cr3  1  0.999  0.999  0.999  1.0
  P  P4  1  0.322  0.322  0.322  1.0
  N  N5  1  0.950  0.499  0.950  1.0
  N  N6  1  0.950  0.950  0.499  1.0
  N  N7  1  0.499  0.950  0.950  1.0
  O  O8  1  0.300  0.507  0.300  1.0
  O  O9  1  0.300  0.300  0.507  1.0
  O  O10  1  0.507  0.300  0.300  1.0
  O  O11  1  0.578  0.830  0.361  1.0
  O  O12  1  0.361  0.578  0.830  1.0
  O  O13  1  0.830  0.361  0.578  1.0
  O  O14  1  0.361  0.830  0.578  1.0
  O  O15  1  0.578  0.361  0.830  1.0
  O  O16  1  0.830  0.578  0.361  1.0
  O  O17  1  0.240  0.831  0.240  1.0
  O  O18  1  0.240  0.240  0.831  1.0
  O  O19  1  0.831  0.240  0.240  1.0
  O  O20  1  0.176  0.176  0.176  1.0
  O  O21  1  0.870  0.085  0.870  1.0
  O  O22  1  0.870  0.870  0.085  1.0
  O  O23  1  0.085  0.870  0.870  1.0
[/CIF]
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The structure described by (Cr4PO16)2(N2)3 is Indium-derived structured and crystallizes in the trigonal R3m space group. The structure is zero-dimensional and consists of nine ammonia atoms and three Cr4PO16 clusters. In each Cr4PO16 cluster, there are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form CrO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra. In the second Cr site, Cr(2) is bonded to one O(4) and three equivalent O(5) atoms to form CrO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra. P(1) is bonded to one O(4) and three equivalent O(1) atoms to form PO4 tetrahedra that share  a cornercorner with one Cr(2)O4 tetrahedra and corners with three equivalent Cr(1)O4 tetrahedra. There are five inequivalent O sites. In the first O site, O(3) is bonded in a single-bond geometry to one Cr(1) atom. In the second O site, O(4) is bonded in a linear geometry to one Cr(2) and one P(1) atom. In the third O site, O(5) is bonded in a single-bond geometry to one Cr(2) atom. In the fourth O site, O(1) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the fifth O site, O(2) is bonded in a single-bond geometry to one Cr(1) atom. is represented by the CIF file [CIF]
data_Cr4PN3O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.883
_cell_length_b   7.883
_cell_length_c   7.883
_cell_angle_alpha   102.217
_cell_angle_beta   102.217
_cell_angle_gamma   102.217
_symmetry_Int_Tables_number   1
_cell_volume   450.763
_cell_formula_units_Z   1
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
  Cr  Cr0  1  0.373  0.754  0.373  1.0
  Cr  Cr1  1  0.373  0.373  0.754  1.0
  Cr  Cr2  1  0.754  0.373  0.373  1.0
  Cr  Cr3  1  0.999  0.999  0.999  1.0
  P  P4  1  0.322  0.322  0.322  1.0
  N  N5  1  0.950  0.499  0.950  1.0
  N  N6  1  0.950  0.950  0.499  1.0
  N  N7  1  0.499  0.950  0.950  1.0
  O  O8  1  0.300  0.507  0.300  1.0
  O  O9  1  0.300  0.300  0.507  1.0
  O  O10  1  0.507  0.300  0.300  1.0
  O  O11  1  0.578  0.830  0.361  1.0
  O  O12  1  0.361  0.578  0.830  1.0
  O  O13  1  0.830  0.361  0.578  1.0
  O  O14  1  0.361  0.830  0.578  1.0
  O  O15  1  0.578  0.361  0.830  1.0
  O  O16  1  0.830  0.578  0.361  1.0
  O  O17  1  0.240  0.831  0.240  1.0
  O  O18  1  0.240  0.240  0.831  1.0
  O  O19  1  0.831  0.240  0.240  1.0
  O  O20  1  0.176  0.176  0.176  1.0
  O  O21  1  0.870  0.085  0.870  1.0
  O  O22  1  0.870  0.870  0.085  1.0
  O  O23  1  0.085  0.870  0.870  1.0
[/CIF]
.