The material described by RbMgPO4 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 4-coordinate geometry to four equivalent O(3) atoms. Mg(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form MgO4 tetrahedra that share corners with four equivalent P(1)O4 tetrahedra. P(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form PO4 tetrahedra that share corners with four equivalent Mg(1)O4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to one Mg(1) and one P(1) atom. In the second O site, O(2) is bonded in a linear geometry to one Mg(1) and one P(1) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Rb(1), one Mg(1), and one P(1) atom. is represented by the CIF file [CIF]
data_RbMgPO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.517
_cell_length_b   8.920
_cell_length_c   9.927
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   488.518
_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  0.250  0.001  0.681  1.0
  Rb  Rb1  1  0.250  0.501  0.819  1.0
  Rb  Rb2  1  0.750  0.999  0.319  1.0
  Rb  Rb3  1  0.750  0.499  0.181  1.0
  Mg  Mg4  1  0.250  0.325  0.418  1.0
  Mg  Mg5  1  0.250  0.825  0.082  1.0
  Mg  Mg6  1  0.750  0.675  0.582  1.0
  Mg  Mg7  1  0.750  0.175  0.918  1.0
  P  P8  1  0.750  0.287  0.585  1.0
  P  P9  1  0.750  0.787  0.915  1.0
  P  P10  1  0.250  0.713  0.415  1.0
  P  P11  1  0.250  0.213  0.085  1.0
  O  O12  1  0.750  0.224  0.730  1.0
  O  O13  1  0.750  0.724  0.770  1.0
  O  O14  1  0.250  0.776  0.270  1.0
  O  O15  1  0.250  0.276  0.230  1.0
  O  O16  1  0.750  0.460  0.588  1.0
  O  O17  1  0.750  0.960  0.912  1.0
  O  O18  1  0.250  0.540  0.412  1.0
  O  O19  1  0.250  0.040  0.088  1.0
  O  O20  1  0.978  0.229  0.510  1.0
  O  O21  1  0.522  0.729  0.990  1.0
  O  O22  1  0.478  0.771  0.490  1.0
  O  O23  1  0.022  0.271  0.010  1.0
  O  O24  1  0.022  0.771  0.490  1.0
  O  O25  1  0.478  0.271  0.010  1.0
  O  O26  1  0.522  0.229  0.510  1.0
  O  O27  1  0.978  0.729  0.990  1.0
[/CIF]
.
The material described by RbMgPO4 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 4-coordinate geometry to four equivalent O(3) atoms. Mg(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form MgO4 tetrahedra that share corners with four equivalent P(1)O4 tetrahedra. P(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form PO4 tetrahedra that share corners with four equivalent Mg(1)O4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to one Mg(1) and one P(1) atom. In the second O site, O(2) is bonded in a linear geometry to one Mg(1) and one P(1) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Rb(1), one Mg(1), and one P(1) atom. is represented by the CIF file [CIF]
data_RbMgPO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.517
_cell_length_b   8.920
_cell_length_c   9.927
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   488.518
_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  0.250  0.001  0.681  1.0
  Rb  Rb1  1  0.250  0.501  0.819  1.0
  Rb  Rb2  1  0.750  0.999  0.319  1.0
  Rb  Rb3  1  0.750  0.499  0.181  1.0
  Mg  Mg4  1  0.250  0.325  0.418  1.0
  Mg  Mg5  1  0.250  0.825  0.082  1.0
  Mg  Mg6  1  0.750  0.675  0.582  1.0
  Mg  Mg7  1  0.750  0.175  0.918  1.0
  P  P8  1  0.750  0.287  0.585  1.0
  P  P9  1  0.750  0.787  0.915  1.0
  P  P10  1  0.250  0.713  0.415  1.0
  P  P11  1  0.250  0.213  0.085  1.0
  O  O12  1  0.750  0.224  0.730  1.0
  O  O13  1  0.750  0.724  0.770  1.0
  O  O14  1  0.250  0.776  0.270  1.0
  O  O15  1  0.250  0.276  0.230  1.0
  O  O16  1  0.750  0.460  0.588  1.0
  O  O17  1  0.750  0.960  0.912  1.0
  O  O18  1  0.250  0.540  0.412  1.0
  O  O19  1  0.250  0.040  0.088  1.0
  O  O20  1  0.978  0.229  0.510  1.0
  O  O21  1  0.522  0.729  0.990  1.0
  O  O22  1  0.478  0.771  0.490  1.0
  O  O23  1  0.022  0.271  0.010  1.0
  O  O24  1  0.022  0.771  0.490  1.0
  O  O25  1  0.478  0.271  0.010  1.0
  O  O26  1  0.522  0.229  0.510  1.0
  O  O27  1  0.978  0.729  0.990  1.0
[/CIF]
.