The compound described by Mn3(AsO7)2 crystallizes in the triclinic P1 space group. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(11), one O(12), one O(13), one O(14), one O(7), and one O(8) atom to form distorted MnO6 octahedra that share  a cornercorner with one As(1)O4 tetrahedra and  a cornercorner with one As(2)O4 tetrahedra. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(2), one O(3), one O(4), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, and edges with two equivalent Mn(3)O6 octahedra. In the third Mn site, Mn(3) is bonded to one O(10), one O(3), one O(4), one O(5), one O(6), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, and edges with two equivalent Mn(2)O6 octahedra. There are two inequivalent As sites. In the first As site, As(1) is bonded to one O(1), one O(3), one O(5), and one O(7) atom to form AsO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, and corners with two equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-61°. In the second As site, As(2) is bonded to one O(2), one O(4), one O(6), and one O(8) atom to form AsO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, and corners with two equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-58°. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mn(2) and one As(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Mn(2) and one As(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(3), and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(3), and one As(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Mn(3) and one As(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Mn(3) and one As(2) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Mn(1) and one As(1) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one As(2) atom. In the ninth O site, O(9) is bonded in a water-like geometry to one Mn(2) and one Mn(3) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one Mn(2) and one Mn(3) atom. In the eleventh O site, O(11) is bonded in a single-bond geometry to one Mn(1) atom. In the twelfth O site, O(12) is bonded in a single-bond geometry to one Mn(1) atom. In the thirteenth O site, O(13) is bonded in a single-bond geometry to one Mn(1) atom. In the fourteenth O site, O(14) is bonded in a single-bond geometry to one Mn(1) atom. is represented by the CIF card [CIF]
data_Mn3(AsO7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.421
_cell_length_b   5.430
_cell_length_c   9.670
_cell_angle_alpha   95.774
_cell_angle_beta   91.232
_cell_angle_gamma   113.651
_symmetry_Int_Tables_number   1
_cell_volume   258.859
_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
  Mn  Mn0  1  0.390  0.221  0.511  1.0
  Mn  Mn1  1  0.995  0.004  0.999  1.0
  Mn  Mn2  1  0.496  0.505  0.001  1.0
  As  As3  1  0.497  0.074  0.200  1.0
  As  As4  1  0.487  0.934  0.797  1.0
  O  O5  1  0.160  0.902  0.149  1.0
  O  O6  1  0.828  0.096  0.844  1.0
  O  O7  1  0.654  0.885  0.099  1.0
  O  O8  1  0.341  0.127  0.906  1.0
  O  O9  1  0.647  0.396  0.154  1.0
  O  O10  1  0.346  0.613  0.847  1.0
  O  O11  1  0.562  0.063  0.371  1.0
  O  O12  1  0.387  0.921  0.629  1.0
  O  O13  1  0.158  0.368  0.075  1.0
  O  O14  1  0.831  0.638  0.924  1.0
  O  O15  1  0.276  0.368  0.391  1.0
  O  O16  1  0.116  0.263  0.594  1.0
  O  O17  1  0.050  0.919  0.454  1.0
  O  O18  1  0.654  0.434  0.601  1.0
[/CIF]
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The compound described by Mn3(AsO7)2 crystallizes in the triclinic P1 space group. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(11), one O(12), one O(13), one O(14), one O(7), and one O(8) atom to form distorted MnO6 octahedra that share  a cornercorner with one As(1)O4 tetrahedra and  a cornercorner with one As(2)O4 tetrahedra. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(2), one O(3), one O(4), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, and edges with two equivalent Mn(3)O6 octahedra. In the third Mn site, Mn(3) is bonded to one O(10), one O(3), one O(4), one O(5), one O(6), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, and edges with two equivalent Mn(2)O6 octahedra. There are two inequivalent As sites. In the first As site, As(1) is bonded to one O(1), one O(3), one O(5), and one O(7) atom to form AsO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, and corners with two equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-61°. In the second As site, As(2) is bonded to one O(2), one O(4), one O(6), and one O(8) atom to form AsO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, and corners with two equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-58°. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mn(2) and one As(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Mn(2) and one As(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(3), and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(3), and one As(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Mn(3) and one As(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Mn(3) and one As(2) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Mn(1) and one As(1) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one As(2) atom. In the ninth O site, O(9) is bonded in a water-like geometry to one Mn(2) and one Mn(3) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one Mn(2) and one Mn(3) atom. In the eleventh O site, O(11) is bonded in a single-bond geometry to one Mn(1) atom. In the twelfth O site, O(12) is bonded in a single-bond geometry to one Mn(1) atom. In the thirteenth O site, O(13) is bonded in a single-bond geometry to one Mn(1) atom. In the fourteenth O site, O(14) is bonded in a single-bond geometry to one Mn(1) atom. is represented by the CIF card [CIF]
data_Mn3(AsO7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.421
_cell_length_b   5.430
_cell_length_c   9.670
_cell_angle_alpha   95.774
_cell_angle_beta   91.232
_cell_angle_gamma   113.651
_symmetry_Int_Tables_number   1
_cell_volume   258.859
_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
  Mn  Mn0  1  0.390  0.221  0.511  1.0
  Mn  Mn1  1  0.995  0.004  0.999  1.0
  Mn  Mn2  1  0.496  0.505  0.001  1.0
  As  As3  1  0.497  0.074  0.200  1.0
  As  As4  1  0.487  0.934  0.797  1.0
  O  O5  1  0.160  0.902  0.149  1.0
  O  O6  1  0.828  0.096  0.844  1.0
  O  O7  1  0.654  0.885  0.099  1.0
  O  O8  1  0.341  0.127  0.906  1.0
  O  O9  1  0.647  0.396  0.154  1.0
  O  O10  1  0.346  0.613  0.847  1.0
  O  O11  1  0.562  0.063  0.371  1.0
  O  O12  1  0.387  0.921  0.629  1.0
  O  O13  1  0.158  0.368  0.075  1.0
  O  O14  1  0.831  0.638  0.924  1.0
  O  O15  1  0.276  0.368  0.391  1.0
  O  O16  1  0.116  0.263  0.594  1.0
  O  O17  1  0.050  0.919  0.454  1.0
  O  O18  1  0.654  0.434  0.601  1.0
[/CIF]
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