The structure described by Mn2PO5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 7-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. In the second Mn site, Mn(2) is bonded in a 6-coordinate geometry to one O(3), two equivalent O(5), and three equivalent O(4) atoms. P(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(5) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Mn(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Mn(1) and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mn(2), two equivalent Mn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Mn(1) and three equivalent Mn(2) atoms. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Mn(2) and one P(1) atom. is represented by the CIF file [CIF]
data_Mn2PO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.429
_cell_length_b   6.451
_cell_length_c   8.706
_cell_angle_alpha   76.911
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   351.651
_cell_formula_units_Z   4
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  0.618  0.010  0.155  1.0
  Mn  Mn1  1  0.882  0.510  0.155  1.0
  Mn  Mn2  1  0.647  0.220  0.491  1.0
  Mn  Mn3  1  0.147  0.280  0.509  1.0
  Mn  Mn4  1  0.853  0.720  0.491  1.0
  Mn  Mn5  1  0.353  0.780  0.509  1.0
  Mn  Mn6  1  0.118  0.490  0.845  1.0
  Mn  Mn7  1  0.382  0.990  0.845  1.0
  P  P8  1  0.089  0.006  0.209  1.0
  P  P9  1  0.411  0.506  0.209  1.0
  P  P10  1  0.589  0.494  0.791  1.0
  P  P11  1  0.911  0.994  0.791  1.0
  O  O12  1  0.279  0.995  0.105  1.0
  O  O13  1  0.926  0.175  0.135  1.0
  O  O14  1  0.221  0.495  0.105  1.0
  O  O15  1  0.537  0.290  0.254  1.0
  O  O16  1  0.574  0.675  0.135  1.0
  O  O17  1  0.963  0.790  0.254  1.0
  O  O18  1  0.891  0.379  0.404  1.0
  O  O19  1  0.336  0.536  0.375  1.0
  O  O20  1  0.609  0.879  0.404  1.0
  O  O21  1  0.164  0.036  0.375  1.0
  O  O22  1  0.836  0.964  0.625  1.0
  O  O23  1  0.391  0.121  0.596  1.0
  O  O24  1  0.664  0.464  0.625  1.0
  O  O25  1  0.109  0.621  0.596  1.0
  O  O26  1  0.037  0.210  0.746  1.0
  O  O27  1  0.426  0.325  0.865  1.0
  O  O28  1  0.463  0.710  0.746  1.0
  O  O29  1  0.779  0.505  0.895  1.0
  O  O30  1  0.074  0.825  0.865  1.0
  O  O31  1  0.721  0.005  0.895  1.0
[/CIF]
.
The structure described by Mn2PO5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 7-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. In the second Mn site, Mn(2) is bonded in a 6-coordinate geometry to one O(3), two equivalent O(5), and three equivalent O(4) atoms. P(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(5) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Mn(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Mn(1) and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mn(2), two equivalent Mn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Mn(1) and three equivalent Mn(2) atoms. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Mn(2) and one P(1) atom. is represented by the CIF file [CIF]
data_Mn2PO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.429
_cell_length_b   6.451
_cell_length_c   8.706
_cell_angle_alpha   76.911
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   351.651
_cell_formula_units_Z   4
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  0.618  0.010  0.155  1.0
  Mn  Mn1  1  0.882  0.510  0.155  1.0
  Mn  Mn2  1  0.647  0.220  0.491  1.0
  Mn  Mn3  1  0.147  0.280  0.509  1.0
  Mn  Mn4  1  0.853  0.720  0.491  1.0
  Mn  Mn5  1  0.353  0.780  0.509  1.0
  Mn  Mn6  1  0.118  0.490  0.845  1.0
  Mn  Mn7  1  0.382  0.990  0.845  1.0
  P  P8  1  0.089  0.006  0.209  1.0
  P  P9  1  0.411  0.506  0.209  1.0
  P  P10  1  0.589  0.494  0.791  1.0
  P  P11  1  0.911  0.994  0.791  1.0
  O  O12  1  0.279  0.995  0.105  1.0
  O  O13  1  0.926  0.175  0.135  1.0
  O  O14  1  0.221  0.495  0.105  1.0
  O  O15  1  0.537  0.290  0.254  1.0
  O  O16  1  0.574  0.675  0.135  1.0
  O  O17  1  0.963  0.790  0.254  1.0
  O  O18  1  0.891  0.379  0.404  1.0
  O  O19  1  0.336  0.536  0.375  1.0
  O  O20  1  0.609  0.879  0.404  1.0
  O  O21  1  0.164  0.036  0.375  1.0
  O  O22  1  0.836  0.964  0.625  1.0
  O  O23  1  0.391  0.121  0.596  1.0
  O  O24  1  0.664  0.464  0.625  1.0
  O  O25  1  0.109  0.621  0.596  1.0
  O  O26  1  0.037  0.210  0.746  1.0
  O  O27  1  0.426  0.325  0.865  1.0
  O  O28  1  0.463  0.710  0.746  1.0
  O  O29  1  0.779  0.505  0.895  1.0
  O  O30  1  0.074  0.825  0.865  1.0
  O  O31  1  0.721  0.005  0.895  1.0
[/CIF]
.