The material described by Rb2Nb3O5Cl7 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 Cl(1), one Cl(11), one Cl(12), one Cl(13), one Cl(14), one Cl(2), one Cl(5), one Cl(6), and one Cl(8) atom. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to one Cl(1), one Cl(10), one Cl(13), one Cl(14), one Cl(2), one Cl(4), one Cl(5), one Cl(7), and one Cl(8) atom. In the third Rb site, Rb(3) is bonded in a 9-coordinate geometry to one Cl(1), one Cl(10), one Cl(11), one Cl(12), one Cl(3), one Cl(5), one Cl(6), one Cl(7), and one Cl(9) atom. In the fourth Rb site, Rb(4) is bonded in a 9-coordinate geometry to one Cl(10), one Cl(12), one Cl(14), one Cl(2), one Cl(3), one Cl(4), one Cl(6), one Cl(7), and one Cl(9) atom. There are six inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a distorted octahedral geometry to one O(2), one O(5), one O(7), one O(9), one Cl(13), and one Cl(3) atom. In the second Nb site, Nb(2) is bonded in a 6-coordinate geometry to one O(3), one O(5), one O(6), one Cl(2), one Cl(4), and one Cl(5) atom. In the third Nb site, Nb(3) is bonded in a 6-coordinate geometry to one O(10), one O(7), one O(8), one Cl(10), one Cl(4), and one Cl(6) atom. In the fourth Nb site, Nb(4) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(9), one Cl(11), one Cl(12), and one Cl(7) atom. In the fifth Nb site, Nb(5) is bonded in a distorted octahedral geometry to one O(1), one O(3), one O(4), one O(8), one Cl(8), and one Cl(9) atom. In the sixth Nb site, Nb(6) is bonded in a 6-coordinate geometry to one O(2), one O(4), one O(6), one Cl(1), one Cl(11), and one Cl(14) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Nb(4) and one Nb(5) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Nb(1) and one Nb(6) atom. In the third O site, O(3) is bonded in a linear geometry to one Nb(2) and one Nb(5) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Nb(5) and one Nb(6) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Nb(1) and one Nb(2) atom. In the sixth O site, O(6) is bonded in a linear geometry to one Nb(2) and one Nb(6) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Nb(1) and one Nb(3) atom. In the eighth O site, O(8) is bonded in a linear geometry to one Nb(3) and one Nb(5) atom. In the ninth O site, O(9) is bonded in a linear geometry to one Nb(1) and one Nb(4) atom. In the tenth O site, O(10) is bonded in a linear geometry to one Nb(3) and one Nb(4) atom. There are fourteen inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), and one Nb(6) atom. In the second Cl site, Cl(2) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one Rb(4), and one Nb(2) atom. In the third Cl site, Cl(3) is bonded in a distorted single-bond geometry to one Rb(3), one Rb(4), and one Nb(1) atom. In the fourth Cl site, Cl(4) is bonded in a distorted trigonal pyramidal geometry to one Rb(2), one Rb(4), one Nb(2), and one Nb(3) atom. In the fifth Cl site, Cl(5) is bonded in a 1-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), and one Nb(2) atom. In the sixth Cl site, Cl(6) is bonded in a 1-coordinate geometry to one Rb(1), one Rb(3), one Rb(4), and one Nb(3) atom. In the seventh Cl site, Cl(7) is bonded in a distorted single-bond geometry to one Rb(2), one Rb(3), one Rb(4), and one Nb(4) atom. In the eighth Cl site, Cl(8) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), and one Nb(5) atom. In the ninth Cl site, Cl(9) is bonded in a distorted single-bond geometry to one Rb(3), one Rb(4), and one Nb(5) atom. In the tenth Cl site, Cl(10) is bonded in a 4-coordinate geometry to one Rb(2), one Rb(3), one Rb(4), and one Nb(3) atom. In the eleventh Cl site, Cl(11) is bonded in a distorted trigonal pyramidal geometry to one Rb(1), one Rb(3), one Nb(4), and one Nb(6) atom. In the twelfth Cl site, Cl(12) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(3), one Rb(4), and one Nb(4) atom. In the thirteenth Cl site, Cl(13) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), and one Nb(1) atom. In the fourteenth Cl site, Cl(14) is bonded in a 1-coordinate geometry to one Rb(1), one Rb(2), one Rb(4), and one Nb(6) atom. is represented by the CIF file [CIF]
data_Rb2Nb3Cl7O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.751
_cell_length_b   9.751
_cell_length_c   11.324
_cell_angle_alpha   71.347
_cell_angle_beta   71.347
_cell_angle_gamma   55.207
_symmetry_Int_Tables_number   1
_cell_volume   824.694
_cell_formula_units_Z   2
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  0.158  0.245  0.141  1.0
  Rb  Rb1  1  0.841  0.752  0.859  1.0
  Rb  Rb2  1  0.756  0.844  0.355  1.0
  Rb  Rb3  1  0.242  0.157  0.645  1.0
  Nb  Nb4  1  0.535  0.462  0.254  1.0
  Nb  Nb5  1  0.781  0.209  0.976  1.0
  Nb  Nb6  1  0.794  0.217  0.526  1.0
  Nb  Nb7  1  0.205  0.788  0.478  1.0
  Nb  Nb8  1  0.465  0.539  0.746  1.0
  Nb  Nb9  1  0.213  0.797  0.024  1.0
  Cl  Cl10  1  0.057  0.638  0.126  1.0
  Cl  Cl11  1  0.940  0.365  0.873  1.0
  Cl  Cl12  1  0.427  0.276  0.328  1.0
  Cl  Cl13  1  0.909  0.089  0.754  1.0
  Cl  Cl14  1  0.638  0.054  0.047  1.0
  Cl  Cl15  1  0.949  0.358  0.459  1.0
  Cl  Cl16  1  0.063  0.635  0.542  1.0
  Cl  Cl17  1  0.283  0.417  0.829  1.0
  Cl  Cl18  1  0.584  0.718  0.668  1.0
  Cl  Cl19  1  0.645  0.058  0.627  1.0
  Cl  Cl20  1  0.088  0.908  0.248  1.0
  Cl  Cl21  1  0.361  0.933  0.374  1.0
  Cl  Cl22  1  0.719  0.580  0.173  1.0
  Cl  Cl23  1  0.357  0.948  0.960  1.0
  O  O24  1  0.292  0.706  0.621  1.0
  O  O25  1  0.403  0.604  0.121  1.0
  O  O26  1  0.606  0.390  0.874  1.0
  O  O27  1  0.291  0.716  0.875  1.0
  O  O28  1  0.712  0.285  0.125  1.0
  O  O29  1  0.995  0.005  0.999  1.0
  O  O30  1  0.715  0.287  0.383  1.0
  O  O31  1  0.598  0.401  0.628  1.0
  O  O32  1  0.400  0.596  0.372  1.0
  O  O33  1  0.005  0.994  0.500  1.0
[/CIF]
.
The material described by Rb2Nb3O5Cl7 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 Cl(1), one Cl(11), one Cl(12), one Cl(13), one Cl(14), one Cl(2), one Cl(5), one Cl(6), and one Cl(8) atom. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to one Cl(1), one Cl(10), one Cl(13), one Cl(14), one Cl(2), one Cl(4), one Cl(5), one Cl(7), and one Cl(8) atom. In the third Rb site, Rb(3) is bonded in a 9-coordinate geometry to one Cl(1), one Cl(10), one Cl(11), one Cl(12), one Cl(3), one Cl(5), one Cl(6), one Cl(7), and one Cl(9) atom. In the fourth Rb site, Rb(4) is bonded in a 9-coordinate geometry to one Cl(10), one Cl(12), one Cl(14), one Cl(2), one Cl(3), one Cl(4), one Cl(6), one Cl(7), and one Cl(9) atom. There are six inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a distorted octahedral geometry to one O(2), one O(5), one O(7), one O(9), one Cl(13), and one Cl(3) atom. In the second Nb site, Nb(2) is bonded in a 6-coordinate geometry to one O(3), one O(5), one O(6), one Cl(2), one Cl(4), and one Cl(5) atom. In the third Nb site, Nb(3) is bonded in a 6-coordinate geometry to one O(10), one O(7), one O(8), one Cl(10), one Cl(4), and one Cl(6) atom. In the fourth Nb site, Nb(4) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(9), one Cl(11), one Cl(12), and one Cl(7) atom. In the fifth Nb site, Nb(5) is bonded in a distorted octahedral geometry to one O(1), one O(3), one O(4), one O(8), one Cl(8), and one Cl(9) atom. In the sixth Nb site, Nb(6) is bonded in a 6-coordinate geometry to one O(2), one O(4), one O(6), one Cl(1), one Cl(11), and one Cl(14) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Nb(4) and one Nb(5) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Nb(1) and one Nb(6) atom. In the third O site, O(3) is bonded in a linear geometry to one Nb(2) and one Nb(5) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Nb(5) and one Nb(6) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Nb(1) and one Nb(2) atom. In the sixth O site, O(6) is bonded in a linear geometry to one Nb(2) and one Nb(6) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Nb(1) and one Nb(3) atom. In the eighth O site, O(8) is bonded in a linear geometry to one Nb(3) and one Nb(5) atom. In the ninth O site, O(9) is bonded in a linear geometry to one Nb(1) and one Nb(4) atom. In the tenth O site, O(10) is bonded in a linear geometry to one Nb(3) and one Nb(4) atom. There are fourteen inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), and one Nb(6) atom. In the second Cl site, Cl(2) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one Rb(4), and one Nb(2) atom. In the third Cl site, Cl(3) is bonded in a distorted single-bond geometry to one Rb(3), one Rb(4), and one Nb(1) atom. In the fourth Cl site, Cl(4) is bonded in a distorted trigonal pyramidal geometry to one Rb(2), one Rb(4), one Nb(2), and one Nb(3) atom. In the fifth Cl site, Cl(5) is bonded in a 1-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), and one Nb(2) atom. In the sixth Cl site, Cl(6) is bonded in a 1-coordinate geometry to one Rb(1), one Rb(3), one Rb(4), and one Nb(3) atom. In the seventh Cl site, Cl(7) is bonded in a distorted single-bond geometry to one Rb(2), one Rb(3), one Rb(4), and one Nb(4) atom. In the eighth Cl site, Cl(8) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), and one Nb(5) atom. In the ninth Cl site, Cl(9) is bonded in a distorted single-bond geometry to one Rb(3), one Rb(4), and one Nb(5) atom. In the tenth Cl site, Cl(10) is bonded in a 4-coordinate geometry to one Rb(2), one Rb(3), one Rb(4), and one Nb(3) atom. In the eleventh Cl site, Cl(11) is bonded in a distorted trigonal pyramidal geometry to one Rb(1), one Rb(3), one Nb(4), and one Nb(6) atom. In the twelfth Cl site, Cl(12) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(3), one Rb(4), and one Nb(4) atom. In the thirteenth Cl site, Cl(13) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), and one Nb(1) atom. In the fourteenth Cl site, Cl(14) is bonded in a 1-coordinate geometry to one Rb(1), one Rb(2), one Rb(4), and one Nb(6) atom. is represented by the CIF file [CIF]
data_Rb2Nb3Cl7O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.751
_cell_length_b   9.751
_cell_length_c   11.324
_cell_angle_alpha   71.347
_cell_angle_beta   71.347
_cell_angle_gamma   55.207
_symmetry_Int_Tables_number   1
_cell_volume   824.694
_cell_formula_units_Z   2
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  0.158  0.245  0.141  1.0
  Rb  Rb1  1  0.841  0.752  0.859  1.0
  Rb  Rb2  1  0.756  0.844  0.355  1.0
  Rb  Rb3  1  0.242  0.157  0.645  1.0
  Nb  Nb4  1  0.535  0.462  0.254  1.0
  Nb  Nb5  1  0.781  0.209  0.976  1.0
  Nb  Nb6  1  0.794  0.217  0.526  1.0
  Nb  Nb7  1  0.205  0.788  0.478  1.0
  Nb  Nb8  1  0.465  0.539  0.746  1.0
  Nb  Nb9  1  0.213  0.797  0.024  1.0
  Cl  Cl10  1  0.057  0.638  0.126  1.0
  Cl  Cl11  1  0.940  0.365  0.873  1.0
  Cl  Cl12  1  0.427  0.276  0.328  1.0
  Cl  Cl13  1  0.909  0.089  0.754  1.0
  Cl  Cl14  1  0.638  0.054  0.047  1.0
  Cl  Cl15  1  0.949  0.358  0.459  1.0
  Cl  Cl16  1  0.063  0.635  0.542  1.0
  Cl  Cl17  1  0.283  0.417  0.829  1.0
  Cl  Cl18  1  0.584  0.718  0.668  1.0
  Cl  Cl19  1  0.645  0.058  0.627  1.0
  Cl  Cl20  1  0.088  0.908  0.248  1.0
  Cl  Cl21  1  0.361  0.933  0.374  1.0
  Cl  Cl22  1  0.719  0.580  0.173  1.0
  Cl  Cl23  1  0.357  0.948  0.960  1.0
  O  O24  1  0.292  0.706  0.621  1.0
  O  O25  1  0.403  0.604  0.121  1.0
  O  O26  1  0.606  0.390  0.874  1.0
  O  O27  1  0.291  0.716  0.875  1.0
  O  O28  1  0.712  0.285  0.125  1.0
  O  O29  1  0.995  0.005  0.999  1.0
  O  O30  1  0.715  0.287  0.383  1.0
  O  O31  1  0.598  0.401  0.628  1.0
  O  O32  1  0.400  0.596  0.372  1.0
  O  O33  1  0.005  0.994  0.500  1.0
[/CIF]
.