The compound described by UNb3O10 crystallizes in the orthorhombic Fddd space group. U(1) is bonded in a distorted linear geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form distorted corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles range from 0-38°. In the second Nb site, Nb(2) is bonded to two equivalent O(4) and four equivalent O(3) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles range from 0-38°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one U(1) and two equivalent Nb(1) atoms. In the second O site, O(2) is bonded in a linear geometry to one U(1) and one Nb(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one U(1), one Nb(1), and one Nb(2) atom. In the fourth O site, O(2) is bonded in a linear geometry to one U(1) and one Nb(1) atom. In the fifth O site, O(4) is bonded in a linear geometry to one Nb(1) and one Nb(2) atom. is represented by the CIF file [CIF]
data_UNb3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.390
_cell_length_b   8.920
_cell_length_c   7.530
_cell_angle_alpha   77.832
_cell_angle_beta   57.058
_cell_angle_gamma   45.110
_symmetry_Int_Tables_number   1
_cell_volume   396.992
_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
  U  U0  1  0.000  0.000  0.000  1.0
  U  U1  1  0.250  0.250  0.250  1.0
  Nb  Nb2  1  0.739  0.739  0.261  1.0
  Nb  Nb3  1  0.261  0.261  0.739  1.0
  Nb  Nb4  1  0.511  0.511  0.989  1.0
  Nb  Nb5  1  0.989  0.989  0.511  1.0
  Nb  Nb6  1  0.500  0.500  0.500  1.0
  Nb  Nb7  1  0.750  0.750  0.750  1.0
  O  O8  1  0.797  0.203  0.797  1.0
  O  O9  1  0.203  0.797  0.203  1.0
  O  O10  1  0.453  0.047  0.453  1.0
  O  O11  1  0.047  0.453  0.047  1.0
  O  O12  1  0.884  0.884  0.116  1.0
  O  O13  1  0.116  0.116  0.884  1.0
  O  O14  1  0.366  0.366  0.134  1.0
  O  O15  1  0.134  0.134  0.366  1.0
  O  O16  1  0.850  0.654  0.448  1.0
  O  O17  1  0.048  0.448  0.654  1.0
  O  O18  1  0.448  0.048  0.850  1.0
  O  O19  1  0.654  0.850  0.048  1.0
  O  O20  1  0.400  0.596  0.802  1.0
  O  O21  1  0.202  0.802  0.596  1.0
  O  O22  1  0.802  0.202  0.400  1.0
  O  O23  1  0.596  0.400  0.202  1.0
  O  O24  1  0.874  0.874  0.626  1.0
  O  O25  1  0.626  0.626  0.874  1.0
  O  O26  1  0.376  0.376  0.624  1.0
  O  O27  1  0.624  0.624  0.376  1.0
[/CIF]
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The compound described by UNb3O10 crystallizes in the orthorhombic Fddd space group. U(1) is bonded in a distorted linear geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form distorted corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles range from 0-38°. In the second Nb site, Nb(2) is bonded to two equivalent O(4) and four equivalent O(3) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles range from 0-38°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one U(1) and two equivalent Nb(1) atoms. In the second O site, O(2) is bonded in a linear geometry to one U(1) and one Nb(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one U(1), one Nb(1), and one Nb(2) atom. In the fourth O site, O(2) is bonded in a linear geometry to one U(1) and one Nb(1) atom. In the fifth O site, O(4) is bonded in a linear geometry to one Nb(1) and one Nb(2) atom. is represented by the CIF file [CIF]
data_UNb3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.390
_cell_length_b   8.920
_cell_length_c   7.530
_cell_angle_alpha   77.832
_cell_angle_beta   57.058
_cell_angle_gamma   45.110
_symmetry_Int_Tables_number   1
_cell_volume   396.992
_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
  U  U0  1  0.000  0.000  0.000  1.0
  U  U1  1  0.250  0.250  0.250  1.0
  Nb  Nb2  1  0.739  0.739  0.261  1.0
  Nb  Nb3  1  0.261  0.261  0.739  1.0
  Nb  Nb4  1  0.511  0.511  0.989  1.0
  Nb  Nb5  1  0.989  0.989  0.511  1.0
  Nb  Nb6  1  0.500  0.500  0.500  1.0
  Nb  Nb7  1  0.750  0.750  0.750  1.0
  O  O8  1  0.797  0.203  0.797  1.0
  O  O9  1  0.203  0.797  0.203  1.0
  O  O10  1  0.453  0.047  0.453  1.0
  O  O11  1  0.047  0.453  0.047  1.0
  O  O12  1  0.884  0.884  0.116  1.0
  O  O13  1  0.116  0.116  0.884  1.0
  O  O14  1  0.366  0.366  0.134  1.0
  O  O15  1  0.134  0.134  0.366  1.0
  O  O16  1  0.850  0.654  0.448  1.0
  O  O17  1  0.048  0.448  0.654  1.0
  O  O18  1  0.448  0.048  0.850  1.0
  O  O19  1  0.654  0.850  0.048  1.0
  O  O20  1  0.400  0.596  0.802  1.0
  O  O21  1  0.202  0.802  0.596  1.0
  O  O22  1  0.802  0.202  0.400  1.0
  O  O23  1  0.596  0.400  0.202  1.0
  O  O24  1  0.874  0.874  0.626  1.0
  O  O25  1  0.626  0.626  0.874  1.0
  O  O26  1  0.376  0.376  0.624  1.0
  O  O27  1  0.624  0.624  0.376  1.0
[/CIF]
.