The crystal structure described by Rb4MgV4Cu2(PO6)4 crystallizes in the triclinic P1 space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one O(1), one O(11), one O(15), one O(18), one O(19), one O(2), one O(3), one O(4), and one O(5) atom. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one O(10), one O(15), one O(20), one O(21), one O(22), one O(3), and one O(9) atom. In the third Rb site, Rb(3) is bonded in a 8-coordinate geometry to one O(16), one O(20), one O(24), one O(4), one O(6), one O(8), and two equivalent O(17) atoms. In the fourth Rb site, Rb(4) is bonded in a 6-coordinate geometry to one O(13), one O(15), one O(18), one O(20), one O(23), and one O(6) atom. Mg(1) is bonded to one O(19), one O(21), one O(3), and one O(5) atom to form distorted MgO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one V(3)O5 trigonal bipyramid, and  an edgeedge with one V(4)O5 trigonal bipyramid. There are four inequivalent V sites. In the first V site, V(1) is bonded in a 5-coordinate geometry to one O(14), one O(20), one O(21), one O(6), and one O(9) atom. In the second V site, V(2) is bonded to one O(1), one O(17), one O(2), one O(4), and one O(7) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. In the third V site, V(3) is bonded to one O(10), one O(13), one O(15), one O(23), and one O(3) atom to form VO5 trigonal bipyramids that share  a cornercorner with one Mg(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. In the fourth V site, V(4) is bonded to one O(12), one O(19), one O(24), one O(5), and one O(8) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to one O(14), one O(16), one O(18), and one O(7) atom. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(10), one O(11), one O(12), and one O(22) atom. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(16), one O(21), one O(24), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Mg(1)O4 tetrahedra,  a cornercorner with one V(2)O5 trigonal bipyramid, and  a cornercorner with one V(4)O5 trigonal bipyramid. In the second P site, P(2) is bonded to one O(1), one O(13), one O(14), and one O(18) atom to form PO4 tetrahedra that share  a cornercorner with one V(2)O5 trigonal bipyramid and  a cornercorner with one V(3)O5 trigonal bipyramid. In the third P site, P(3) is bonded to one O(11), one O(12), one O(2), and one O(23) atom to form PO4 tetrahedra that share  a cornercorner with one V(2)O5 trigonal bipyramid,  a cornercorner with one V(3)O5 trigonal bipyramid, and  a cornercorner with one V(4)O5 trigonal bipyramid. In the fourth P site, P(4) is bonded to one O(10), one O(22), one O(8), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one V(3)O5 trigonal bipyramid and  a cornercorner with one V(4)O5 trigonal bipyramid. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(1), one V(2), and one P(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one V(2), and one P(3) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Rb(2), one Mg(1), and one V(3) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one Rb(1), one Rb(3), and one V(2) atom. In the fifth O site, O(5) is bonded in a distorted L-shaped geometry to one Rb(1), one Mg(1), and one V(4) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one Rb(3), one Rb(4), and one V(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one V(2), one Cu(1), and one P(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Rb(3), one V(4), and one P(4) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Rb(2), one V(1), and one P(4) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Rb(2), one V(3), one Cu(2), and one P(4) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Cu(2), and one P(3) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one V(4), one Cu(2), and one P(3) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Rb(4), one V(3), and one P(2) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one V(1), one Cu(1), and one P(2) atom. In the fifteenth O site, O(15) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), one Rb(4), and one V(3) atom. In the sixteenth O site, O(16) is bonded in a 2-coordinate geometry to one Rb(3), one Cu(1), and one P(1) atom. In the seventeenth O site, O(17) is bonded in a single-bond geometry to two equivalent Rb(3) and one V(2) atom. In the eighteenth O site, O(18) is bonded in a 2-coordinate geometry to one Rb(1), one Rb(4), one Cu(1), and one P(2) atom. In the nineteenth O site, O(19) is bonded in a distorted L-shaped geometry to one Rb(1), one Mg(1), and one V(4) atom. In the twentieth O site, O(20) is bonded in a single-bond geometry to one Rb(2), one Rb(3), one Rb(4), and one V(1) atom. In the twenty-first O site, O(21) is bonded in a 3-coordinate geometry to one Rb(2), one Mg(1), one V(1), and one P(1) atom. In the twenty-second O site, O(22) is bonded in a 3-coordinate geometry to one Rb(2), one Cu(2), and one P(4) atom. In the twenty-third O site, O(23) is bonded in a 3-coordinate geometry to one Rb(4), one V(3), and one P(3) atom. In the twenty-fourth O site, O(24) is bonded in a 2-coordinate geometry to one Rb(3), one V(4), and one P(1) atom. is represented by the CIF file [CIF]
data_Rb4MgV4Cu2(PO6)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.350
_cell_length_b   9.793
_cell_length_c   11.398
_cell_angle_alpha   90.563
_cell_angle_beta   89.748
_cell_angle_gamma   92.518
_symmetry_Int_Tables_number   1
_cell_volume   596.531
_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
  Rb  Rb0  1  0.465  0.099  0.340  1.0
  Rb  Rb1  1  0.546  0.825  0.648  1.0
  Rb  Rb2  1  0.572  0.397  0.880  1.0
  Rb  Rb3  1  0.450  0.623  0.153  1.0
  Mg  Mg4  1  0.055  0.995  0.614  1.0
  V  V5  1  0.084  0.753  0.896  1.0
  V  V6  1  0.941  0.246  0.108  1.0
  V  V7  1  0.941  0.746  0.393  1.0
  V  V8  1  0.034  0.263  0.608  1.0
  Cu  Cu9  1  0.511  0.006  0.002  1.0
  Cu  Cu10  1  0.502  0.500  0.494  1.0
  P  P11  1  0.050  0.099  0.859  1.0
  P  P12  1  0.980  0.919  0.139  1.0
  P  P13  1  0.968  0.415  0.358  1.0
  P  P14  1  0.023  0.584  0.641  1.0
  O  O15  1  0.054  0.071  0.174  1.0
  O  O16  1  0.052  0.318  0.259  1.0
  O  O17  1  0.107  0.868  0.493  1.0
  O  O18  1  0.639  0.277  0.117  1.0
  O  O19  1  0.821  0.143  0.559  1.0
  O  O20  1  0.919  0.642  0.975  1.0
  O  O21  1  0.863  0.110  0.963  1.0
  O  O22  1  0.938  0.437  0.682  1.0
  O  O23  1  0.973  0.690  0.740  1.0
  O  O24  1  0.848  0.622  0.540  1.0
  O  O25  1  0.684  0.397  0.381  1.0
  O  O26  1  0.119  0.366  0.469  1.0
  O  O27  1  0.065  0.826  0.237  1.0
  O  O28  1  0.146  0.887  0.025  1.0
  O  O29  1  0.638  0.769  0.372  1.0
  O  O30  1  0.326  0.117  0.895  1.0
  O  O31  1  0.085  0.359  0.021  1.0
  O  O32  1  0.698  0.900  0.112  1.0
  O  O33  1  0.292  0.167  0.608  1.0
  O  O34  1  0.376  0.703  0.887  1.0
  O  O35  1  0.008  0.956  0.792  1.0
  O  O36  1  0.304  0.588  0.611  1.0
  O  O37  1  0.057  0.563  0.329  1.0
  O  O38  1  0.975  0.212  0.774  1.0
[/CIF]
.
The crystal structure described by Rb4MgV4Cu2(PO6)4 crystallizes in the triclinic P1 space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one O(1), one O(11), one O(15), one O(18), one O(19), one O(2), one O(3), one O(4), and one O(5) atom. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one O(10), one O(15), one O(20), one O(21), one O(22), one O(3), and one O(9) atom. In the third Rb site, Rb(3) is bonded in a 8-coordinate geometry to one O(16), one O(20), one O(24), one O(4), one O(6), one O(8), and two equivalent O(17) atoms. In the fourth Rb site, Rb(4) is bonded in a 6-coordinate geometry to one O(13), one O(15), one O(18), one O(20), one O(23), and one O(6) atom. Mg(1) is bonded to one O(19), one O(21), one O(3), and one O(5) atom to form distorted MgO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one V(3)O5 trigonal bipyramid, and  an edgeedge with one V(4)O5 trigonal bipyramid. There are four inequivalent V sites. In the first V site, V(1) is bonded in a 5-coordinate geometry to one O(14), one O(20), one O(21), one O(6), and one O(9) atom. In the second V site, V(2) is bonded to one O(1), one O(17), one O(2), one O(4), and one O(7) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. In the third V site, V(3) is bonded to one O(10), one O(13), one O(15), one O(23), and one O(3) atom to form VO5 trigonal bipyramids that share  a cornercorner with one Mg(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. In the fourth V site, V(4) is bonded to one O(12), one O(19), one O(24), one O(5), and one O(8) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to one O(14), one O(16), one O(18), and one O(7) atom. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(10), one O(11), one O(12), and one O(22) atom. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(16), one O(21), one O(24), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Mg(1)O4 tetrahedra,  a cornercorner with one V(2)O5 trigonal bipyramid, and  a cornercorner with one V(4)O5 trigonal bipyramid. In the second P site, P(2) is bonded to one O(1), one O(13), one O(14), and one O(18) atom to form PO4 tetrahedra that share  a cornercorner with one V(2)O5 trigonal bipyramid and  a cornercorner with one V(3)O5 trigonal bipyramid. In the third P site, P(3) is bonded to one O(11), one O(12), one O(2), and one O(23) atom to form PO4 tetrahedra that share  a cornercorner with one V(2)O5 trigonal bipyramid,  a cornercorner with one V(3)O5 trigonal bipyramid, and  a cornercorner with one V(4)O5 trigonal bipyramid. In the fourth P site, P(4) is bonded to one O(10), one O(22), one O(8), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one V(3)O5 trigonal bipyramid and  a cornercorner with one V(4)O5 trigonal bipyramid. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(1), one V(2), and one P(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one V(2), and one P(3) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Rb(2), one Mg(1), and one V(3) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one Rb(1), one Rb(3), and one V(2) atom. In the fifth O site, O(5) is bonded in a distorted L-shaped geometry to one Rb(1), one Mg(1), and one V(4) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one Rb(3), one Rb(4), and one V(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one V(2), one Cu(1), and one P(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Rb(3), one V(4), and one P(4) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Rb(2), one V(1), and one P(4) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Rb(2), one V(3), one Cu(2), and one P(4) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Cu(2), and one P(3) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one V(4), one Cu(2), and one P(3) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one Rb(4), one V(3), and one P(2) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one V(1), one Cu(1), and one P(2) atom. In the fifteenth O site, O(15) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), one Rb(4), and one V(3) atom. In the sixteenth O site, O(16) is bonded in a 2-coordinate geometry to one Rb(3), one Cu(1), and one P(1) atom. In the seventeenth O site, O(17) is bonded in a single-bond geometry to two equivalent Rb(3) and one V(2) atom. In the eighteenth O site, O(18) is bonded in a 2-coordinate geometry to one Rb(1), one Rb(4), one Cu(1), and one P(2) atom. In the nineteenth O site, O(19) is bonded in a distorted L-shaped geometry to one Rb(1), one Mg(1), and one V(4) atom. In the twentieth O site, O(20) is bonded in a single-bond geometry to one Rb(2), one Rb(3), one Rb(4), and one V(1) atom. In the twenty-first O site, O(21) is bonded in a 3-coordinate geometry to one Rb(2), one Mg(1), one V(1), and one P(1) atom. In the twenty-second O site, O(22) is bonded in a 3-coordinate geometry to one Rb(2), one Cu(2), and one P(4) atom. In the twenty-third O site, O(23) is bonded in a 3-coordinate geometry to one Rb(4), one V(3), and one P(3) atom. In the twenty-fourth O site, O(24) is bonded in a 2-coordinate geometry to one Rb(3), one V(4), and one P(1) atom. is represented by the CIF file [CIF]
data_Rb4MgV4Cu2(PO6)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.350
_cell_length_b   9.793
_cell_length_c   11.398
_cell_angle_alpha   90.563
_cell_angle_beta   89.748
_cell_angle_gamma   92.518
_symmetry_Int_Tables_number   1
_cell_volume   596.531
_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
  Rb  Rb0  1  0.465  0.099  0.340  1.0
  Rb  Rb1  1  0.546  0.825  0.648  1.0
  Rb  Rb2  1  0.572  0.397  0.880  1.0
  Rb  Rb3  1  0.450  0.623  0.153  1.0
  Mg  Mg4  1  0.055  0.995  0.614  1.0
  V  V5  1  0.084  0.753  0.896  1.0
  V  V6  1  0.941  0.246  0.108  1.0
  V  V7  1  0.941  0.746  0.393  1.0
  V  V8  1  0.034  0.263  0.608  1.0
  Cu  Cu9  1  0.511  0.006  0.002  1.0
  Cu  Cu10  1  0.502  0.500  0.494  1.0
  P  P11  1  0.050  0.099  0.859  1.0
  P  P12  1  0.980  0.919  0.139  1.0
  P  P13  1  0.968  0.415  0.358  1.0
  P  P14  1  0.023  0.584  0.641  1.0
  O  O15  1  0.054  0.071  0.174  1.0
  O  O16  1  0.052  0.318  0.259  1.0
  O  O17  1  0.107  0.868  0.493  1.0
  O  O18  1  0.639  0.277  0.117  1.0
  O  O19  1  0.821  0.143  0.559  1.0
  O  O20  1  0.919  0.642  0.975  1.0
  O  O21  1  0.863  0.110  0.963  1.0
  O  O22  1  0.938  0.437  0.682  1.0
  O  O23  1  0.973  0.690  0.740  1.0
  O  O24  1  0.848  0.622  0.540  1.0
  O  O25  1  0.684  0.397  0.381  1.0
  O  O26  1  0.119  0.366  0.469  1.0
  O  O27  1  0.065  0.826  0.237  1.0
  O  O28  1  0.146  0.887  0.025  1.0
  O  O29  1  0.638  0.769  0.372  1.0
  O  O30  1  0.326  0.117  0.895  1.0
  O  O31  1  0.085  0.359  0.021  1.0
  O  O32  1  0.698  0.900  0.112  1.0
  O  O33  1  0.292  0.167  0.608  1.0
  O  O34  1  0.376  0.703  0.887  1.0
  O  O35  1  0.008  0.956  0.792  1.0
  O  O36  1  0.304  0.588  0.611  1.0
  O  O37  1  0.057  0.563  0.329  1.0
  O  O38  1  0.975  0.212  0.774  1.0
[/CIF]
.