The crystal structure described by Li2Mn(SiO3)2 crystallizes in the monoclinic C2/c space group. Li(1) is bonded in a distorted trigonal planar geometry to one O(2) and two equivalent O(1) atoms. Mn(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form MnO4 tetrahedra that share corners with four equivalent Si(1)O4 tetrahedra. Si(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SiO4 tetrahedra that share corners with two equivalent Mn(1)O4 tetrahedra and corners with two equivalent Si(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Li(1), one Mn(1), and one Si(1) atom to form a mixture of distorted edge and corner-sharing OLi2MnSi trigonal pyramids. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one Mn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to two equivalent Si(1) atoms. In the fourth O site, O(4) is bonded in a linear geometry to two equivalent Si(1) atoms. is represented by the CIF file [CIF]
data_Li2Mn(SiO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.763
_cell_length_b   5.763
_cell_length_c   9.410
_cell_angle_alpha   90.509
_cell_angle_beta   89.495
_cell_angle_gamma   61.519
_symmetry_Int_Tables_number   1
_cell_volume   274.641
_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
  Li  Li0  1  0.585  0.711  0.883  1.0
  Li  Li1  1  0.289  0.414  0.383  1.0
  Li  Li2  1  0.711  0.586  0.617  1.0
  Li  Li3  1  0.414  0.289  0.117  1.0
  Mn  Mn4  1  0.254  0.254  0.750  1.0
  Mn  Mn5  1  0.746  0.746  0.250  1.0
  Si  Si6  1  0.135  0.804  0.633  1.0
  Si  Si7  1  0.197  0.864  0.133  1.0
  Si  Si8  1  0.804  0.135  0.867  1.0
  Si  Si9  1  0.864  0.197  0.367  1.0
  O  O10  1  0.367  0.855  0.702  1.0
  O  O11  1  0.146  0.632  0.203  1.0
  O  O12  1  0.238  0.498  0.586  1.0
  O  O13  1  0.502  0.762  0.086  1.0
  O  O14  1  0.887  0.887  0.750  1.0
  O  O15  1  1.000  0.000  0.500  1.0
  O  O16  1  0.113  0.113  0.250  1.0
  O  O17  1  0.000  1.000  0.000  1.0
  O  O18  1  0.498  0.238  0.914  1.0
  O  O19  1  0.762  0.502  0.414  1.0
  O  O20  1  0.855  0.367  0.798  1.0
  O  O21  1  0.632  0.145  0.297  1.0
[/CIF]
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The crystal structure described by Li2Mn(SiO3)2 crystallizes in the monoclinic C2/c space group. Li(1) is bonded in a distorted trigonal planar geometry to one O(2) and two equivalent O(1) atoms. Mn(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form MnO4 tetrahedra that share corners with four equivalent Si(1)O4 tetrahedra. Si(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SiO4 tetrahedra that share corners with two equivalent Mn(1)O4 tetrahedra and corners with two equivalent Si(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Li(1), one Mn(1), and one Si(1) atom to form a mixture of distorted edge and corner-sharing OLi2MnSi trigonal pyramids. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one Mn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to two equivalent Si(1) atoms. In the fourth O site, O(4) is bonded in a linear geometry to two equivalent Si(1) atoms. is represented by the CIF file [CIF]
data_Li2Mn(SiO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.763
_cell_length_b   5.763
_cell_length_c   9.410
_cell_angle_alpha   90.509
_cell_angle_beta   89.495
_cell_angle_gamma   61.519
_symmetry_Int_Tables_number   1
_cell_volume   274.641
_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
  Li  Li0  1  0.585  0.711  0.883  1.0
  Li  Li1  1  0.289  0.414  0.383  1.0
  Li  Li2  1  0.711  0.586  0.617  1.0
  Li  Li3  1  0.414  0.289  0.117  1.0
  Mn  Mn4  1  0.254  0.254  0.750  1.0
  Mn  Mn5  1  0.746  0.746  0.250  1.0
  Si  Si6  1  0.135  0.804  0.633  1.0
  Si  Si7  1  0.197  0.864  0.133  1.0
  Si  Si8  1  0.804  0.135  0.867  1.0
  Si  Si9  1  0.864  0.197  0.367  1.0
  O  O10  1  0.367  0.855  0.702  1.0
  O  O11  1  0.146  0.632  0.203  1.0
  O  O12  1  0.238  0.498  0.586  1.0
  O  O13  1  0.502  0.762  0.086  1.0
  O  O14  1  0.887  0.887  0.750  1.0
  O  O15  1  1.000  0.000  0.500  1.0
  O  O16  1  0.113  0.113  0.250  1.0
  O  O17  1  0.000  1.000  0.000  1.0
  O  O18  1  0.498  0.238  0.914  1.0
  O  O19  1  0.762  0.502  0.414  1.0
  O  O20  1  0.855  0.367  0.798  1.0
  O  O21  1  0.632  0.145  0.297  1.0
[/CIF]
.