The material structure described by Mn4(SiO3)5 crystallizes in the triclinic P-1 space group. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 5-coordinate geometry to one O(10), one O(15), one O(3), one O(5), and one O(8) atom. In the second Mn site, Mn(2) is bonded to one O(2), one O(3), one O(8), one O(9), and two equivalent O(11) atoms to form distorted MnO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra, corners with three equivalent Si(5)O4 tetrahedra, and  an edgeedge with one Mn(2)O6 octahedra. In the third Mn site, Mn(3) is bonded to one O(10), one O(12), one O(13), one O(15), one O(4), and one O(5) atom to form distorted MnO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with three equivalent Si(4)O4 tetrahedra, and  an edgeedge with one Si(2)O4 tetrahedra. In the fourth Mn site, Mn(4) is bonded in a 6-coordinate geometry to one O(11), one O(12), one O(14), one O(2), one O(3), and one O(5) atom. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(14), one O(3), one O(4), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 14-67°. In the second Si site, Si(2) is bonded to one O(13), one O(14), one O(15), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(3)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  an edgeedge with one Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles are 44°. In the third Si site, Si(3) is bonded to one O(1), one O(2), one O(6), and one O(8) atom to form SiO4 tetrahedra that share corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 44-54°. In the fourth Si site, Si(4) is bonded to one O(10), one O(12), one O(13), and one O(6) atom to form SiO4 tetrahedra that share corners with three equivalent Mn(3)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 46-56°. In the fifth Si site, Si(5) is bonded to one O(1), one O(11), one O(7), and one O(9) atom to form SiO4 tetrahedra that share corners with three equivalent Mn(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 34-62°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(5) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Mn(2), one Mn(4), and one Si(3) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Mn(1), one Mn(2), one Mn(4), and one Si(1) atom. In the fourth O site, O(4) is bonded in a linear geometry to one Mn(3) and one Si(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(3), one Mn(4), and one Si(2) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(4) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(5) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one Si(3) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Mn(2) and one Si(5) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(3), and one Si(4) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Mn(4), two equivalent Mn(2), and one Si(5) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Mn(3), one Mn(4), and one Si(4) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Mn(3), one Si(2), and one Si(4) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Mn(4), one Si(1), and one Si(2) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(3), and one Si(2) atom. is represented by the CIF card [CIF]
data_Mn4(SiO3)5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.585
_cell_length_b   7.561
_cell_length_c   12.161
_cell_angle_alpha   106.081
_cell_angle_beta   94.767
_cell_angle_gamma   93.458
_symmetry_Int_Tables_number   1
_cell_volume   577.534
_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  0.039  0.108  0.167  1.0
  Mn  Mn1  1  0.122  0.321  0.448  1.0
  Mn  Mn2  1  0.762  0.269  0.970  1.0
  Mn  Mn3  1  0.238  0.731  0.030  1.0
  Mn  Mn4  1  0.813  0.504  0.268  1.0
  Mn  Mn5  1  0.961  0.892  0.833  1.0
  Mn  Mn6  1  0.878  0.679  0.552  1.0
  Mn  Mn7  1  0.187  0.496  0.732  1.0
  Si  Si8  1  0.293  0.539  0.254  1.0
  Si  Si9  1  0.492  0.207  0.121  1.0
  Si  Si10  1  0.834  0.937  0.351  1.0
  Si  Si11  1  0.166  0.063  0.649  1.0
  Si  Si12  1  0.767  0.732  0.090  1.0
  Si  Si13  1  0.508  0.793  0.879  1.0
  Si  Si14  1  0.233  0.268  0.910  1.0
  Si  Si15  1  0.625  0.272  0.483  1.0
  Si  Si16  1  0.707  0.461  0.746  1.0
  Si  Si17  1  0.375  0.728  0.517  1.0
  O  O18  1  0.321  0.940  0.568  1.0
  O  O19  1  0.888  0.758  0.394  1.0
  O  O20  1  0.100  0.398  0.264  1.0
  O  O21  1  0.247  0.644  0.159  1.0
  O  O22  1  0.263  0.818  0.889  1.0
  O  O23  1  0.278  0.145  0.782  1.0
  O  O24  1  0.632  0.314  0.622  1.0
  O  O25  1  0.973  0.921  0.661  1.0
  O  O26  1  0.112  0.242  0.606  1.0
  O  O27  1  0.404  0.307  0.428  1.0
  O  O28  1  0.039  0.169  0.954  1.0
  O  O29  1  0.722  0.855  0.218  1.0
  O  O30  1  0.821  0.405  0.452  1.0
  O  O31  1  0.900  0.602  0.736  1.0
  O  O32  1  0.027  0.079  0.339  1.0
  O  O33  1  0.961  0.831  0.046  1.0
  O  O34  1  0.179  0.595  0.548  1.0
  O  O35  1  0.596  0.693  0.572  1.0
  O  O36  1  0.797  0.525  0.093  1.0
  O  O37  1  0.441  0.260  0.996  1.0
  O  O38  1  0.559  0.740  0.004  1.0
  O  O39  1  0.203  0.475  0.907  1.0
  O  O40  1  0.510  0.593  0.778  1.0
  O  O41  1  0.753  0.356  0.841  1.0
  O  O42  1  0.679  0.060  0.432  1.0
  O  O43  1  0.664  0.952  0.866  1.0
  O  O44  1  0.368  0.686  0.378  1.0
  O  O45  1  0.490  0.407  0.222  1.0
  O  O46  1  0.737  0.182  0.111  1.0
  O  O47  1  0.336  0.048  0.134  1.0
[/CIF]
.
The material structure described by Mn4(SiO3)5 crystallizes in the triclinic P-1 space group. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 5-coordinate geometry to one O(10), one O(15), one O(3), one O(5), and one O(8) atom. In the second Mn site, Mn(2) is bonded to one O(2), one O(3), one O(8), one O(9), and two equivalent O(11) atoms to form distorted MnO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra, corners with three equivalent Si(5)O4 tetrahedra, and  an edgeedge with one Mn(2)O6 octahedra. In the third Mn site, Mn(3) is bonded to one O(10), one O(12), one O(13), one O(15), one O(4), and one O(5) atom to form distorted MnO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with three equivalent Si(4)O4 tetrahedra, and  an edgeedge with one Si(2)O4 tetrahedra. In the fourth Mn site, Mn(4) is bonded in a 6-coordinate geometry to one O(11), one O(12), one O(14), one O(2), one O(3), and one O(5) atom. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(14), one O(3), one O(4), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 14-67°. In the second Si site, Si(2) is bonded to one O(13), one O(14), one O(15), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(3)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  an edgeedge with one Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles are 44°. In the third Si site, Si(3) is bonded to one O(1), one O(2), one O(6), and one O(8) atom to form SiO4 tetrahedra that share corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 44-54°. In the fourth Si site, Si(4) is bonded to one O(10), one O(12), one O(13), and one O(6) atom to form SiO4 tetrahedra that share corners with three equivalent Mn(3)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 46-56°. In the fifth Si site, Si(5) is bonded to one O(1), one O(11), one O(7), and one O(9) atom to form SiO4 tetrahedra that share corners with three equivalent Mn(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 34-62°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(5) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Mn(2), one Mn(4), and one Si(3) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Mn(1), one Mn(2), one Mn(4), and one Si(1) atom. In the fourth O site, O(4) is bonded in a linear geometry to one Mn(3) and one Si(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(3), one Mn(4), and one Si(2) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(4) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(5) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one Si(3) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Mn(2) and one Si(5) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(3), and one Si(4) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Mn(4), two equivalent Mn(2), and one Si(5) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Mn(3), one Mn(4), and one Si(4) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Mn(3), one Si(2), and one Si(4) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Mn(4), one Si(1), and one Si(2) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(3), and one Si(2) atom. is represented by the CIF card [CIF]
data_Mn4(SiO3)5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.585
_cell_length_b   7.561
_cell_length_c   12.161
_cell_angle_alpha   106.081
_cell_angle_beta   94.767
_cell_angle_gamma   93.458
_symmetry_Int_Tables_number   1
_cell_volume   577.534
_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  0.039  0.108  0.167  1.0
  Mn  Mn1  1  0.122  0.321  0.448  1.0
  Mn  Mn2  1  0.762  0.269  0.970  1.0
  Mn  Mn3  1  0.238  0.731  0.030  1.0
  Mn  Mn4  1  0.813  0.504  0.268  1.0
  Mn  Mn5  1  0.961  0.892  0.833  1.0
  Mn  Mn6  1  0.878  0.679  0.552  1.0
  Mn  Mn7  1  0.187  0.496  0.732  1.0
  Si  Si8  1  0.293  0.539  0.254  1.0
  Si  Si9  1  0.492  0.207  0.121  1.0
  Si  Si10  1  0.834  0.937  0.351  1.0
  Si  Si11  1  0.166  0.063  0.649  1.0
  Si  Si12  1  0.767  0.732  0.090  1.0
  Si  Si13  1  0.508  0.793  0.879  1.0
  Si  Si14  1  0.233  0.268  0.910  1.0
  Si  Si15  1  0.625  0.272  0.483  1.0
  Si  Si16  1  0.707  0.461  0.746  1.0
  Si  Si17  1  0.375  0.728  0.517  1.0
  O  O18  1  0.321  0.940  0.568  1.0
  O  O19  1  0.888  0.758  0.394  1.0
  O  O20  1  0.100  0.398  0.264  1.0
  O  O21  1  0.247  0.644  0.159  1.0
  O  O22  1  0.263  0.818  0.889  1.0
  O  O23  1  0.278  0.145  0.782  1.0
  O  O24  1  0.632  0.314  0.622  1.0
  O  O25  1  0.973  0.921  0.661  1.0
  O  O26  1  0.112  0.242  0.606  1.0
  O  O27  1  0.404  0.307  0.428  1.0
  O  O28  1  0.039  0.169  0.954  1.0
  O  O29  1  0.722  0.855  0.218  1.0
  O  O30  1  0.821  0.405  0.452  1.0
  O  O31  1  0.900  0.602  0.736  1.0
  O  O32  1  0.027  0.079  0.339  1.0
  O  O33  1  0.961  0.831  0.046  1.0
  O  O34  1  0.179  0.595  0.548  1.0
  O  O35  1  0.596  0.693  0.572  1.0
  O  O36  1  0.797  0.525  0.093  1.0
  O  O37  1  0.441  0.260  0.996  1.0
  O  O38  1  0.559  0.740  0.004  1.0
  O  O39  1  0.203  0.475  0.907  1.0
  O  O40  1  0.510  0.593  0.778  1.0
  O  O41  1  0.753  0.356  0.841  1.0
  O  O42  1  0.679  0.060  0.432  1.0
  O  O43  1  0.664  0.952  0.866  1.0
  O  O44  1  0.368  0.686  0.378  1.0
  O  O45  1  0.490  0.407  0.222  1.0
  O  O46  1  0.737  0.182  0.111  1.0
  O  O47  1  0.336  0.048  0.134  1.0
[/CIF]
.