The structure described by Mn4B2SnSi4(HO9)2 crystallizes in the triclinic P-1 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(3), one O(7), one O(8), and one O(9) atom to form distorted MnO6 octahedra that share  a cornercorner with one B(1)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  an edgeedge with one Sn(1)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, and  an edgeedge with one B(1)O4 tetrahedra. In the second Mn site, Mn(2) is bonded to one O(1), one O(4), one O(5), one O(7), one O(8), and one O(9) atom to form distorted MnO6 octahedra that share  a cornercorner with one B(1)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  an edgeedge with one Sn(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and  an edgeedge with one B(1)O4 tetrahedra. B(1) is bonded to one O(1), one O(3), one O(5), and one O(9) atom to form BO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one Sn(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra, and  an edgeedge with one Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-65°. Sn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form SnO6 octahedra that share corners with two equivalent B(1)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(2), one O(5), one O(6), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Sn(1)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one B(1)O4 tetrahedra, and  a cornercorner with one Si(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-60°. In the second Si site, Si(2) is bonded to one O(3), one O(4), one O(6), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Sn(1)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one B(1)O4 tetrahedra, and  a cornercorner with one Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-61°. H(1) is bonded in a single-bond geometry to one O(9) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Mn(1), one Mn(2), one B(1), and one Sn(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mn(1), one Sn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mn(1), one B(1), and one Si(2) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Mn(2), one Sn(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mn(2), one B(1), and one Si(1) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Si(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Si(2) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Mn(1), one Mn(2), one B(1), and one H(1) atom. is represented by the CIF file [CIF]
data_Mn4Si4SnB2(HO9)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.052
_cell_length_b   7.462
_cell_length_c   7.775
_cell_angle_alpha   89.971
_cell_angle_beta   63.045
_cell_angle_gamma   76.889
_symmetry_Int_Tables_number   1
_cell_volume   352.684
_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  0.694  0.711  0.264  1.0
  Mn  Mn1  1  0.306  0.289  0.736  1.0
  Mn  Mn2  1  0.190  0.723  0.265  1.0
  Mn  Mn3  1  0.810  0.277  0.735  1.0
  Si  Si4  1  0.925  0.674  0.759  1.0
  Si  Si5  1  0.075  0.326  0.241  1.0
  Si  Si6  1  0.469  0.677  0.776  1.0
  Si  Si7  1  0.531  0.324  0.224  1.0
  Sn  Sn8  1  1.000  0.000  1.000  1.0
  B  B9  1  0.251  0.876  0.570  1.0
  B  B10  1  0.749  0.124  0.430  1.0
  H  H11  1  0.671  0.954  0.660  1.0
  H  H12  1  0.329  0.046  0.340  1.0
  O  O13  1  0.143  0.044  0.709  1.0
  O  O14  1  0.857  0.956  0.291  1.0
  O  O15  1  0.877  0.780  0.965  1.0
  O  O16  1  0.123  0.220  0.035  1.0
  O  O17  1  0.435  0.751  0.590  1.0
  O  O18  1  0.565  0.249  0.410  1.0
  O  O19  1  0.274  0.805  0.978  1.0
  O  O20  1  0.726  0.195  0.022  1.0
  O  O21  1  0.091  0.770  0.579  1.0
  O  O22  1  0.909  0.230  0.421  1.0
  O  O23  1  0.699  0.730  0.736  1.0
  O  O24  1  0.301  0.270  0.264  1.0
  O  O25  1  0.014  0.451  0.736  1.0
  O  O26  1  0.986  0.549  0.264  1.0
  O  O27  1  0.491  0.458  0.790  1.0
  O  O28  1  0.509  0.542  0.210  1.0
  O  O29  1  0.354  0.914  0.362  1.0
  O  O30  1  0.646  0.086  0.638  1.0
[/CIF]
.
The structure described by Mn4B2SnSi4(HO9)2 crystallizes in the triclinic P-1 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(3), one O(7), one O(8), and one O(9) atom to form distorted MnO6 octahedra that share  a cornercorner with one B(1)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  an edgeedge with one Sn(1)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, and  an edgeedge with one B(1)O4 tetrahedra. In the second Mn site, Mn(2) is bonded to one O(1), one O(4), one O(5), one O(7), one O(8), and one O(9) atom to form distorted MnO6 octahedra that share  a cornercorner with one B(1)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  an edgeedge with one Sn(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and  an edgeedge with one B(1)O4 tetrahedra. B(1) is bonded to one O(1), one O(3), one O(5), and one O(9) atom to form BO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one Sn(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra, and  an edgeedge with one Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-65°. Sn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form SnO6 octahedra that share corners with two equivalent B(1)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(2), one O(5), one O(6), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Sn(1)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one B(1)O4 tetrahedra, and  a cornercorner with one Si(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-60°. In the second Si site, Si(2) is bonded to one O(3), one O(4), one O(6), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Sn(1)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one B(1)O4 tetrahedra, and  a cornercorner with one Si(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-61°. H(1) is bonded in a single-bond geometry to one O(9) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Mn(1), one Mn(2), one B(1), and one Sn(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mn(1), one Sn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mn(1), one B(1), and one Si(2) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Mn(2), one Sn(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mn(2), one B(1), and one Si(1) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Si(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Si(2) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Mn(1), one Mn(2), one B(1), and one H(1) atom. is represented by the CIF file [CIF]
data_Mn4Si4SnB2(HO9)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.052
_cell_length_b   7.462
_cell_length_c   7.775
_cell_angle_alpha   89.971
_cell_angle_beta   63.045
_cell_angle_gamma   76.889
_symmetry_Int_Tables_number   1
_cell_volume   352.684
_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  0.694  0.711  0.264  1.0
  Mn  Mn1  1  0.306  0.289  0.736  1.0
  Mn  Mn2  1  0.190  0.723  0.265  1.0
  Mn  Mn3  1  0.810  0.277  0.735  1.0
  Si  Si4  1  0.925  0.674  0.759  1.0
  Si  Si5  1  0.075  0.326  0.241  1.0
  Si  Si6  1  0.469  0.677  0.776  1.0
  Si  Si7  1  0.531  0.324  0.224  1.0
  Sn  Sn8  1  1.000  0.000  1.000  1.0
  B  B9  1  0.251  0.876  0.570  1.0
  B  B10  1  0.749  0.124  0.430  1.0
  H  H11  1  0.671  0.954  0.660  1.0
  H  H12  1  0.329  0.046  0.340  1.0
  O  O13  1  0.143  0.044  0.709  1.0
  O  O14  1  0.857  0.956  0.291  1.0
  O  O15  1  0.877  0.780  0.965  1.0
  O  O16  1  0.123  0.220  0.035  1.0
  O  O17  1  0.435  0.751  0.590  1.0
  O  O18  1  0.565  0.249  0.410  1.0
  O  O19  1  0.274  0.805  0.978  1.0
  O  O20  1  0.726  0.195  0.022  1.0
  O  O21  1  0.091  0.770  0.579  1.0
  O  O22  1  0.909  0.230  0.421  1.0
  O  O23  1  0.699  0.730  0.736  1.0
  O  O24  1  0.301  0.270  0.264  1.0
  O  O25  1  0.014  0.451  0.736  1.0
  O  O26  1  0.986  0.549  0.264  1.0
  O  O27  1  0.491  0.458  0.790  1.0
  O  O28  1  0.509  0.542  0.210  1.0
  O  O29  1  0.354  0.914  0.362  1.0
  O  O30  1  0.646  0.086  0.638  1.0
[/CIF]
.