The compound described by NbMn(PO4)2 crystallizes in the triclinic P1 space group. There are four inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(1), one O(17), one O(19), one O(25), one O(27), and one O(9) atom to form NbO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(6)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and  an edgeedge with one P(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-55°. In the second Nb site, Nb(2) is bonded to one O(10), one O(18), one O(2), one O(20), one O(26), and one O(28) atom to form NbO6 pentagonal pyramids that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one P(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 47-55°. In the third Nb site, Nb(3) is bonded to one O(11), one O(21), one O(23), one O(29), one O(3), and one O(31) atom to form NbO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(8)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and  an edgeedge with one P(7)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-55°. In the fourth Nb site, Nb(4) is bonded to one O(12), one O(22), one O(24), one O(30), one O(32), and one O(4) atom to form NbO6 pentagonal pyramids that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra, and  an edgeedge with one P(8)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 47-55°. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(13), one O(17), one O(19), one O(26), one O(28), and one O(6) atom to form distorted MnO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra, corners with two equivalent Nb(2)O6 pentagonal pyramids,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra, corners with two equivalent P(6)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 55°. In the second Mn site, Mn(2) is bonded to one O(15), one O(21), one O(23), one O(30), one O(32), and one O(8) atom to form distorted MnO6 octahedra that share corners with two equivalent Nb(3)O6 octahedra, corners with two equivalent Nb(4)O6 pentagonal pyramids,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, corners with two equivalent P(8)O4 tetrahedra, and  an edgeedge with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 55°. In the third Mn site, Mn(3) is bonded to one O(14), one O(18), one O(20), one O(25), one O(27), and one O(5) atom to form distorted MnO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra, corners with two equivalent Nb(2)O6 pentagonal pyramids,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(8)O4 tetrahedra, corners with two equivalent P(5)O4 tetrahedra, and  an edgeedge with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 48°. In the fourth Mn site, Mn(4) is bonded to one O(16), one O(22), one O(24), one O(29), one O(31), and one O(7) atom to form distorted MnO6 octahedra that share corners with two equivalent Nb(3)O6 octahedra, corners with two equivalent Nb(4)O6 pentagonal pyramids,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(6)O4 tetrahedra, corners with two equivalent P(7)O4 tetrahedra, and  an edgeedge with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles are 48°. There are eight inequivalent P sites. In the first P site, P(1) is bonded to one O(17), one O(19), one O(3), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one Nb(3)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra, corners with two equivalent Nb(1)O6 octahedra, and  an edgeedge with one Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-55°. In the second P site, P(2) is bonded to one O(18), one O(20), one O(4), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Nb(4)O6 pentagonal pyramid, corners with two equivalent Nb(2)O6 pentagonal pyramids, and  an edgeedge with one Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. In the third P site, P(3) is bonded to one O(1), one O(21), one O(23), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Mn(4)O6 octahedra, corners with two equivalent Nb(3)O6 octahedra, and  an edgeedge with one Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-55°. In the fourth P site, P(4) is bonded to one O(2), one O(22), one O(24), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one Nb(2)O6 pentagonal pyramid, corners with two equivalent Nb(4)O6 pentagonal pyramids, and  an edgeedge with one Mn(4)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. In the fifth P site, P(5) is bonded to one O(10), one O(15), one O(25), and one O(27) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra,  a cornercorner with one Nb(2)O6 pentagonal pyramid, and  an edgeedge with one Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-59°. In the sixth P site, P(6) is bonded to one O(16), one O(26), one O(28), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Mn(4)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, and  an edgeedge with one Nb(2)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 35-59°. In the seventh P site, P(7) is bonded to one O(12), one O(13), one O(29), and one O(31) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra,  a cornercorner with one Nb(4)O6 pentagonal pyramid, and  an edgeedge with one Nb(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-59°. In the eighth P site, P(8) is bonded to one O(11), one O(14), one O(30), and one O(32) atom to form PO4 tetrahedra that share  a cornercorner with one Nb(3)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, and  an edgeedge with one Nb(4)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 35-59°. There are thirty-two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Nb(1) and one P(3) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Nb(2) and one P(4) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Nb(3) and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Nb(4) and one P(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Mn(3) and one P(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Mn(4) and one P(3) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Mn(2) and one P(4) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Nb(1) and one P(6) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Nb(2) and one P(5) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Nb(3) and one P(8) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Nb(4) and one P(7) atom. In the thirteenth O site, O(13) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(7) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one Mn(3) and one P(8) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one Mn(2) and one P(5) atom. In the sixteenth O site, O(16) is bonded in a bent 150 degrees geometry to one Mn(4) and one P(6) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Nb(1), one Mn(1), and one P(1) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Nb(2), one Mn(3), and one P(2) atom. In the nineteenth O site, O(19) is bonded in a 3-coordinate geometry to one Nb(1), one Mn(1), and one P(1) atom. In the twentieth O site, O(20) is bonded in a 3-coordinate geometry to one Nb(2), one Mn(3), and one P(2) atom. In the twenty-first O site, O(21) is bonded in a 3-coordinate geometry to one Nb(3), one Mn(2), and one P(3) atom. In the twenty-second O site, O(22) is bonded in a 3-coordinate geometry to one Nb(4), one Mn(4), and one P(4) atom. In the twenty-third O site, O(23) is bonded in a 3-coordinate geometry to one Nb(3), one Mn(2), and one P(3) atom. In the twenty-fourth O site, O(24) is bonded in a 3-coordinate geometry to one Nb(4), one Mn(4), and one P(4) atom. In the twenty-fifth O site, O(25) is bonded in a distorted trigonal planar geometry to one Nb(1), one Mn(3), and one P(5) atom. In the twenty-sixth O site, O(26) is bonded in a distorted trigonal planar geometry to one Nb(2), one Mn(1), and one P(6) atom. In the twenty-seventh O site, O(27) is bonded in a distorted trigonal planar geometry to one Nb(1), one Mn(3), and one P(5) atom. In the twenty-eighth O site, O(28) is bonded in a distorted trigonal planar geometry to one Nb(2), one Mn(1), and one P(6) atom. In the twenty-ninth O site, O(29) is bonded in a distorted trigonal planar geometry to one Nb(3), one Mn(4), and one P(7) atom. In the thirtieth O site, O(30) is bonded in a distorted trigonal planar geometry to one Nb(4), one Mn(2), and one P(8) atom. In the thirty-first O site, O(31) is bonded in a distorted trigonal planar geometry to one Nb(3), one Mn(4), and one P(7) atom. In the thirty-second O site, O(32) is bonded in a distorted trigonal planar geometry to one Nb(4), one Mn(2), and one P(8) atom. is represented by the CIF card [CIF]
data_MnNb(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.059
_cell_length_b   6.140
_cell_length_c   10.198
_cell_angle_alpha   89.997
_cell_angle_beta   87.485
_cell_angle_gamma   89.993
_symmetry_Int_Tables_number   1
_cell_volume   316.463
_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
  Mn  Mn0  1  0.941  0.250  0.722  1.0
  Mn  Mn1  1  0.059  0.750  0.278  1.0
  Nb  Nb2  1  0.437  0.750  0.784  1.0
  Nb  Nb3  1  0.563  0.250  0.216  1.0
  O  O4  1  0.684  0.750  0.943  1.0
  O  O5  1  0.316  0.250  0.057  1.0
  O  O6  1  0.710  0.250  0.895  1.0
  O  O7  1  0.290  0.750  0.105  1.0
  O  O8  1  0.176  0.750  0.635  1.0
  O  O9  1  0.824  0.250  0.365  1.0
  O  O10  1  0.151  0.250  0.545  1.0
  O  O11  1  0.849  0.750  0.455  1.0
  O  O12  1  0.284  0.049  0.839  1.0
  O  O13  1  0.284  0.451  0.839  1.0
  O  O14  1  0.716  0.549  0.161  1.0
  O  O15  1  0.716  0.951  0.161  1.0
  O  O16  1  0.730  0.944  0.675  1.0
  O  O17  1  0.730  0.556  0.675  1.0
  O  O18  1  0.270  0.056  0.325  1.0
  O  O19  1  0.270  0.444  0.325  1.0
  P  P20  1  0.412  0.250  0.911  1.0
  P  P21  1  0.588  0.750  0.089  1.0
  P  P22  1  0.881  0.750  0.601  1.0
  P  P23  1  0.119  0.250  0.399  1.0
[/CIF]
.
The compound described by NbMn(PO4)2 crystallizes in the triclinic P1 space group. There are four inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(1), one O(17), one O(19), one O(25), one O(27), and one O(9) atom to form NbO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(6)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and  an edgeedge with one P(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-55°. In the second Nb site, Nb(2) is bonded to one O(10), one O(18), one O(2), one O(20), one O(26), and one O(28) atom to form NbO6 pentagonal pyramids that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one P(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 47-55°. In the third Nb site, Nb(3) is bonded to one O(11), one O(21), one O(23), one O(29), one O(3), and one O(31) atom to form NbO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(8)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and  an edgeedge with one P(7)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-55°. In the fourth Nb site, Nb(4) is bonded to one O(12), one O(22), one O(24), one O(30), one O(32), and one O(4) atom to form NbO6 pentagonal pyramids that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra, and  an edgeedge with one P(8)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 47-55°. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(13), one O(17), one O(19), one O(26), one O(28), and one O(6) atom to form distorted MnO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra, corners with two equivalent Nb(2)O6 pentagonal pyramids,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(7)O4 tetrahedra, corners with two equivalent P(6)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 55°. In the second Mn site, Mn(2) is bonded to one O(15), one O(21), one O(23), one O(30), one O(32), and one O(8) atom to form distorted MnO6 octahedra that share corners with two equivalent Nb(3)O6 octahedra, corners with two equivalent Nb(4)O6 pentagonal pyramids,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, corners with two equivalent P(8)O4 tetrahedra, and  an edgeedge with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 55°. In the third Mn site, Mn(3) is bonded to one O(14), one O(18), one O(20), one O(25), one O(27), and one O(5) atom to form distorted MnO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra, corners with two equivalent Nb(2)O6 pentagonal pyramids,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(8)O4 tetrahedra, corners with two equivalent P(5)O4 tetrahedra, and  an edgeedge with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 48°. In the fourth Mn site, Mn(4) is bonded to one O(16), one O(22), one O(24), one O(29), one O(31), and one O(7) atom to form distorted MnO6 octahedra that share corners with two equivalent Nb(3)O6 octahedra, corners with two equivalent Nb(4)O6 pentagonal pyramids,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(6)O4 tetrahedra, corners with two equivalent P(7)O4 tetrahedra, and  an edgeedge with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles are 48°. There are eight inequivalent P sites. In the first P site, P(1) is bonded to one O(17), one O(19), one O(3), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one Nb(3)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra, corners with two equivalent Nb(1)O6 octahedra, and  an edgeedge with one Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-55°. In the second P site, P(2) is bonded to one O(18), one O(20), one O(4), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Nb(4)O6 pentagonal pyramid, corners with two equivalent Nb(2)O6 pentagonal pyramids, and  an edgeedge with one Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. In the third P site, P(3) is bonded to one O(1), one O(21), one O(23), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Mn(4)O6 octahedra, corners with two equivalent Nb(3)O6 octahedra, and  an edgeedge with one Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-55°. In the fourth P site, P(4) is bonded to one O(2), one O(22), one O(24), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one Nb(2)O6 pentagonal pyramid, corners with two equivalent Nb(4)O6 pentagonal pyramids, and  an edgeedge with one Mn(4)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. In the fifth P site, P(5) is bonded to one O(10), one O(15), one O(25), and one O(27) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra,  a cornercorner with one Nb(2)O6 pentagonal pyramid, and  an edgeedge with one Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-59°. In the sixth P site, P(6) is bonded to one O(16), one O(26), one O(28), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Mn(4)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, and  an edgeedge with one Nb(2)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 35-59°. In the seventh P site, P(7) is bonded to one O(12), one O(13), one O(29), and one O(31) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra,  a cornercorner with one Nb(4)O6 pentagonal pyramid, and  an edgeedge with one Nb(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-59°. In the eighth P site, P(8) is bonded to one O(11), one O(14), one O(30), and one O(32) atom to form PO4 tetrahedra that share  a cornercorner with one Nb(3)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, and  an edgeedge with one Nb(4)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 35-59°. There are thirty-two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Nb(1) and one P(3) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Nb(2) and one P(4) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Nb(3) and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Nb(4) and one P(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Mn(3) and one P(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Mn(4) and one P(3) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Mn(2) and one P(4) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Nb(1) and one P(6) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Nb(2) and one P(5) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one Nb(3) and one P(8) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Nb(4) and one P(7) atom. In the thirteenth O site, O(13) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(7) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one Mn(3) and one P(8) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one Mn(2) and one P(5) atom. In the sixteenth O site, O(16) is bonded in a bent 150 degrees geometry to one Mn(4) and one P(6) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Nb(1), one Mn(1), and one P(1) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Nb(2), one Mn(3), and one P(2) atom. In the nineteenth O site, O(19) is bonded in a 3-coordinate geometry to one Nb(1), one Mn(1), and one P(1) atom. In the twentieth O site, O(20) is bonded in a 3-coordinate geometry to one Nb(2), one Mn(3), and one P(2) atom. In the twenty-first O site, O(21) is bonded in a 3-coordinate geometry to one Nb(3), one Mn(2), and one P(3) atom. In the twenty-second O site, O(22) is bonded in a 3-coordinate geometry to one Nb(4), one Mn(4), and one P(4) atom. In the twenty-third O site, O(23) is bonded in a 3-coordinate geometry to one Nb(3), one Mn(2), and one P(3) atom. In the twenty-fourth O site, O(24) is bonded in a 3-coordinate geometry to one Nb(4), one Mn(4), and one P(4) atom. In the twenty-fifth O site, O(25) is bonded in a distorted trigonal planar geometry to one Nb(1), one Mn(3), and one P(5) atom. In the twenty-sixth O site, O(26) is bonded in a distorted trigonal planar geometry to one Nb(2), one Mn(1), and one P(6) atom. In the twenty-seventh O site, O(27) is bonded in a distorted trigonal planar geometry to one Nb(1), one Mn(3), and one P(5) atom. In the twenty-eighth O site, O(28) is bonded in a distorted trigonal planar geometry to one Nb(2), one Mn(1), and one P(6) atom. In the twenty-ninth O site, O(29) is bonded in a distorted trigonal planar geometry to one Nb(3), one Mn(4), and one P(7) atom. In the thirtieth O site, O(30) is bonded in a distorted trigonal planar geometry to one Nb(4), one Mn(2), and one P(8) atom. In the thirty-first O site, O(31) is bonded in a distorted trigonal planar geometry to one Nb(3), one Mn(4), and one P(7) atom. In the thirty-second O site, O(32) is bonded in a distorted trigonal planar geometry to one Nb(4), one Mn(2), and one P(8) atom. is represented by the CIF card [CIF]
data_MnNb(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.059
_cell_length_b   6.140
_cell_length_c   10.198
_cell_angle_alpha   89.997
_cell_angle_beta   87.485
_cell_angle_gamma   89.993
_symmetry_Int_Tables_number   1
_cell_volume   316.463
_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
  Mn  Mn0  1  0.941  0.250  0.722  1.0
  Mn  Mn1  1  0.059  0.750  0.278  1.0
  Nb  Nb2  1  0.437  0.750  0.784  1.0
  Nb  Nb3  1  0.563  0.250  0.216  1.0
  O  O4  1  0.684  0.750  0.943  1.0
  O  O5  1  0.316  0.250  0.057  1.0
  O  O6  1  0.710  0.250  0.895  1.0
  O  O7  1  0.290  0.750  0.105  1.0
  O  O8  1  0.176  0.750  0.635  1.0
  O  O9  1  0.824  0.250  0.365  1.0
  O  O10  1  0.151  0.250  0.545  1.0
  O  O11  1  0.849  0.750  0.455  1.0
  O  O12  1  0.284  0.049  0.839  1.0
  O  O13  1  0.284  0.451  0.839  1.0
  O  O14  1  0.716  0.549  0.161  1.0
  O  O15  1  0.716  0.951  0.161  1.0
  O  O16  1  0.730  0.944  0.675  1.0
  O  O17  1  0.730  0.556  0.675  1.0
  O  O18  1  0.270  0.056  0.325  1.0
  O  O19  1  0.270  0.444  0.325  1.0
  P  P20  1  0.412  0.250  0.911  1.0
  P  P21  1  0.588  0.750  0.089  1.0
  P  P22  1  0.881  0.750  0.601  1.0
  P  P23  1  0.119  0.250  0.399  1.0
[/CIF]
.