The compound described by MnZn2Si(HO3)2 crystallizes in the monoclinic P2_1/c space group. Mn(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), and two equivalent O(5) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(4), and two equivalent O(6) atoms. In the second Zn site, Zn(2) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form ZnO4 tetrahedra that share corners with two equivalent Si(1)O4 tetrahedra. Si(1) is bonded to one O(1), one O(3), one O(4), and one O(6) atom to form SiO4 tetrahedra that share corners with two equivalent Zn(2)O4 tetrahedra. There are two inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one O(2) and one O(5) atom. In the second H site, H(2) is bonded in a distorted linear geometry to one O(3) and one O(6) atom. There are six inequivalent O sites. In the first O site, O(3) is bonded in a 3-coordinate geometry to one Zn(1), one Si(1), and one H(2) atom. In the second O site, O(4) is bonded in a distorted trigonal planar geometry to one Zn(1), one Zn(2), and one Si(1) atom. In the third O site, O(5) is bonded to two equivalent Mn(1), one Zn(2), and one H(1) atom to form distorted edge-sharing OMn2ZnH trigonal pyramids. In the fourth O site, O(6) is bonded to two equivalent Zn(1), one Si(1), and one H(2) atom to form distorted edge-sharing OZn2SiH trigonal pyramids. In the fifth O site, O(1) is bonded in a 4-coordinate geometry to one Mn(1), one Zn(1), one Zn(2), and one Si(1) atom. In the sixth O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Zn(2), and one H(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MnZn2Si(HO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.318
_cell_length_b   8.892
_cell_length_c   11.667
_cell_angle_alpha   80.719
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   544.424
_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  0.859  0.010  0.611  1.0
  Mn  Mn1  1  0.359  0.490  0.389  1.0
  Mn  Mn2  1  0.141  0.990  0.389  1.0
  Mn  Mn3  1  0.641  0.510  0.611  1.0
  Zn  Zn4  1  0.611  0.589  0.106  1.0
  Zn  Zn5  1  0.111  0.911  0.894  1.0
  Zn  Zn6  1  0.389  0.411  0.894  1.0
  Zn  Zn7  1  0.889  0.089  0.106  1.0
  Zn  Zn8  1  0.645  0.805  0.330  1.0
  Zn  Zn9  1  0.145  0.695  0.670  1.0
  Zn  Zn10  1  0.355  0.195  0.670  1.0
  Zn  Zn11  1  0.855  0.305  0.330  1.0
  Si  Si12  1  0.662  0.693  0.845  1.0
  Si  Si13  1  0.162  0.807  0.155  1.0
  Si  Si14  1  0.338  0.307  0.155  1.0
  Si  Si15  1  0.838  0.193  0.845  1.0
  H  H16  1  0.872  0.555  0.385  1.0
  H  H17  1  0.372  0.945  0.615  1.0
  H  H18  1  0.128  0.445  0.615  1.0
  H  H19  1  0.628  0.055  0.385  1.0
  H  H20  1  0.409  0.092  0.076  1.0
  H  H21  1  0.909  0.408  0.924  1.0
  H  H22  1  0.591  0.908  0.924  1.0
  H  H23  1  0.091  0.592  0.076  1.0
  O  O24  1  0.520  0.377  0.248  1.0
  O  O25  1  0.020  0.123  0.752  1.0
  O  O26  1  0.480  0.623  0.752  1.0
  O  O27  1  0.980  0.877  0.248  1.0
  O  O28  1  0.496  0.996  0.664  1.0
  O  O29  1  0.996  0.504  0.336  1.0
  O  O30  1  0.504  0.004  0.336  1.0
  O  O31  1  0.004  0.496  0.664  1.0
  O  O32  1  0.511  0.182  0.093  1.0
  O  O33  1  0.011  0.318  0.907  1.0
  O  O34  1  0.489  0.818  0.907  1.0
  O  O35  1  0.989  0.682  0.093  1.0
  O  O36  1  0.574  0.277  0.800  1.0
  O  O37  1  0.074  0.223  0.200  1.0
  O  O38  1  0.426  0.723  0.200  1.0
  O  O39  1  0.926  0.777  0.800  1.0
  O  O40  1  0.638  0.625  0.441  1.0
  O  O41  1  0.138  0.875  0.559  1.0
  O  O42  1  0.362  0.375  0.559  1.0
  O  O43  1  0.862  0.125  0.441  1.0
  O  O44  1  0.713  0.541  0.946  1.0
  O  O45  1  0.213  0.959  0.054  1.0
  O  O46  1  0.287  0.459  0.054  1.0
  O  O47  1  0.787  0.041  0.946  1.0
[/CIF]
.
The compound described by MnZn2Si(HO3)2 crystallizes in the monoclinic P2_1/c space group. Mn(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), and two equivalent O(5) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(4), and two equivalent O(6) atoms. In the second Zn site, Zn(2) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form ZnO4 tetrahedra that share corners with two equivalent Si(1)O4 tetrahedra. Si(1) is bonded to one O(1), one O(3), one O(4), and one O(6) atom to form SiO4 tetrahedra that share corners with two equivalent Zn(2)O4 tetrahedra. There are two inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one O(2) and one O(5) atom. In the second H site, H(2) is bonded in a distorted linear geometry to one O(3) and one O(6) atom. There are six inequivalent O sites. In the first O site, O(3) is bonded in a 3-coordinate geometry to one Zn(1), one Si(1), and one H(2) atom. In the second O site, O(4) is bonded in a distorted trigonal planar geometry to one Zn(1), one Zn(2), and one Si(1) atom. In the third O site, O(5) is bonded to two equivalent Mn(1), one Zn(2), and one H(1) atom to form distorted edge-sharing OMn2ZnH trigonal pyramids. In the fourth O site, O(6) is bonded to two equivalent Zn(1), one Si(1), and one H(2) atom to form distorted edge-sharing OZn2SiH trigonal pyramids. In the fifth O site, O(1) is bonded in a 4-coordinate geometry to one Mn(1), one Zn(1), one Zn(2), and one Si(1) atom. In the sixth O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Zn(2), and one H(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MnZn2Si(HO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.318
_cell_length_b   8.892
_cell_length_c   11.667
_cell_angle_alpha   80.719
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   544.424
_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  0.859  0.010  0.611  1.0
  Mn  Mn1  1  0.359  0.490  0.389  1.0
  Mn  Mn2  1  0.141  0.990  0.389  1.0
  Mn  Mn3  1  0.641  0.510  0.611  1.0
  Zn  Zn4  1  0.611  0.589  0.106  1.0
  Zn  Zn5  1  0.111  0.911  0.894  1.0
  Zn  Zn6  1  0.389  0.411  0.894  1.0
  Zn  Zn7  1  0.889  0.089  0.106  1.0
  Zn  Zn8  1  0.645  0.805  0.330  1.0
  Zn  Zn9  1  0.145  0.695  0.670  1.0
  Zn  Zn10  1  0.355  0.195  0.670  1.0
  Zn  Zn11  1  0.855  0.305  0.330  1.0
  Si  Si12  1  0.662  0.693  0.845  1.0
  Si  Si13  1  0.162  0.807  0.155  1.0
  Si  Si14  1  0.338  0.307  0.155  1.0
  Si  Si15  1  0.838  0.193  0.845  1.0
  H  H16  1  0.872  0.555  0.385  1.0
  H  H17  1  0.372  0.945  0.615  1.0
  H  H18  1  0.128  0.445  0.615  1.0
  H  H19  1  0.628  0.055  0.385  1.0
  H  H20  1  0.409  0.092  0.076  1.0
  H  H21  1  0.909  0.408  0.924  1.0
  H  H22  1  0.591  0.908  0.924  1.0
  H  H23  1  0.091  0.592  0.076  1.0
  O  O24  1  0.520  0.377  0.248  1.0
  O  O25  1  0.020  0.123  0.752  1.0
  O  O26  1  0.480  0.623  0.752  1.0
  O  O27  1  0.980  0.877  0.248  1.0
  O  O28  1  0.496  0.996  0.664  1.0
  O  O29  1  0.996  0.504  0.336  1.0
  O  O30  1  0.504  0.004  0.336  1.0
  O  O31  1  0.004  0.496  0.664  1.0
  O  O32  1  0.511  0.182  0.093  1.0
  O  O33  1  0.011  0.318  0.907  1.0
  O  O34  1  0.489  0.818  0.907  1.0
  O  O35  1  0.989  0.682  0.093  1.0
  O  O36  1  0.574  0.277  0.800  1.0
  O  O37  1  0.074  0.223  0.200  1.0
  O  O38  1  0.426  0.723  0.200  1.0
  O  O39  1  0.926  0.777  0.800  1.0
  O  O40  1  0.638  0.625  0.441  1.0
  O  O41  1  0.138  0.875  0.559  1.0
  O  O42  1  0.362  0.375  0.559  1.0
  O  O43  1  0.862  0.125  0.441  1.0
  O  O44  1  0.713  0.541  0.946  1.0
  O  O45  1  0.213  0.959  0.054  1.0
  O  O46  1  0.287  0.459  0.054  1.0
  O  O47  1  0.787  0.041  0.946  1.0
[/CIF]
.