The compound described by Rb3PO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), and four equivalent O(1) atoms. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to two equivalent O(2), two equivalent O(3), and three equivalent O(1) atoms. P(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Rb(1), three equivalent Rb(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(1), four equivalent Rb(2), and one P(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Rb(1), four equivalent Rb(2), and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb3PO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.170
_cell_length_b   8.433
_cell_length_c   11.685
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   607.981
_cell_formula_units_Z   4
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
  Rb  Rb0  1  0.139  0.250  0.072  1.0
  Rb  Rb1  1  0.691  0.492  0.144  1.0
  Rb  Rb2  1  0.861  0.750  0.928  1.0
  Rb  Rb3  1  0.191  0.508  0.356  1.0
  Rb  Rb4  1  0.691  0.008  0.144  1.0
  Rb  Rb5  1  0.191  0.992  0.356  1.0
  Rb  Rb6  1  0.639  0.750  0.428  1.0
  Rb  Rb7  1  0.309  0.992  0.856  1.0
  Rb  Rb8  1  0.309  0.508  0.856  1.0
  Rb  Rb9  1  0.809  0.008  0.644  1.0
  Rb  Rb10  1  0.809  0.492  0.644  1.0
  Rb  Rb11  1  0.361  0.250  0.572  1.0
  P  P12  1  0.778  0.250  0.385  1.0
  P  P13  1  0.278  0.750  0.115  1.0
  P  P14  1  0.222  0.750  0.615  1.0
  P  P15  1  0.722  0.250  0.885  1.0
  O  O16  1  0.364  0.599  0.609  1.0
  O  O17  1  0.410  0.750  0.228  1.0
  O  O18  1  0.864  0.401  0.891  1.0
  O  O19  1  0.136  0.901  0.109  1.0
  O  O20  1  0.864  0.099  0.891  1.0
  O  O21  1  0.560  0.250  0.987  1.0
  O  O22  1  0.060  0.750  0.513  1.0
  O  O23  1  0.940  0.250  0.487  1.0
  O  O24  1  0.636  0.099  0.391  1.0
  O  O25  1  0.364  0.901  0.609  1.0
  O  O26  1  0.440  0.750  0.013  1.0
  O  O27  1  0.636  0.401  0.391  1.0
  O  O28  1  0.090  0.750  0.728  1.0
  O  O29  1  0.910  0.250  0.272  1.0
  O  O30  1  0.590  0.250  0.772  1.0
  O  O31  1  0.136  0.599  0.109  1.0
[/CIF]
.
The compound described by Rb3PO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), and four equivalent O(1) atoms. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to two equivalent O(2), two equivalent O(3), and three equivalent O(1) atoms. P(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Rb(1), three equivalent Rb(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(1), four equivalent Rb(2), and one P(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Rb(1), four equivalent Rb(2), and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb3PO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.170
_cell_length_b   8.433
_cell_length_c   11.685
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   607.981
_cell_formula_units_Z   4
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
  Rb  Rb0  1  0.139  0.250  0.072  1.0
  Rb  Rb1  1  0.691  0.492  0.144  1.0
  Rb  Rb2  1  0.861  0.750  0.928  1.0
  Rb  Rb3  1  0.191  0.508  0.356  1.0
  Rb  Rb4  1  0.691  0.008  0.144  1.0
  Rb  Rb5  1  0.191  0.992  0.356  1.0
  Rb  Rb6  1  0.639  0.750  0.428  1.0
  Rb  Rb7  1  0.309  0.992  0.856  1.0
  Rb  Rb8  1  0.309  0.508  0.856  1.0
  Rb  Rb9  1  0.809  0.008  0.644  1.0
  Rb  Rb10  1  0.809  0.492  0.644  1.0
  Rb  Rb11  1  0.361  0.250  0.572  1.0
  P  P12  1  0.778  0.250  0.385  1.0
  P  P13  1  0.278  0.750  0.115  1.0
  P  P14  1  0.222  0.750  0.615  1.0
  P  P15  1  0.722  0.250  0.885  1.0
  O  O16  1  0.364  0.599  0.609  1.0
  O  O17  1  0.410  0.750  0.228  1.0
  O  O18  1  0.864  0.401  0.891  1.0
  O  O19  1  0.136  0.901  0.109  1.0
  O  O20  1  0.864  0.099  0.891  1.0
  O  O21  1  0.560  0.250  0.987  1.0
  O  O22  1  0.060  0.750  0.513  1.0
  O  O23  1  0.940  0.250  0.487  1.0
  O  O24  1  0.636  0.099  0.391  1.0
  O  O25  1  0.364  0.901  0.609  1.0
  O  O26  1  0.440  0.750  0.013  1.0
  O  O27  1  0.636  0.401  0.391  1.0
  O  O28  1  0.090  0.750  0.728  1.0
  O  O29  1  0.910  0.250  0.272  1.0
  O  O30  1  0.590  0.250  0.772  1.0
  O  O31  1  0.136  0.599  0.109  1.0
[/CIF]
.