The material structure described by CsMg6SiO8 crystallizes in the triclinic P1 space group. Cs(1) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(7), and two equivalent O(5) atoms. There are six inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(1), one O(2), one O(6), and two equivalent O(8) atoms to form a mixture of edge and corner-sharing MgO5 trigonal bipyramids. In the second Mg site, Mg(2) is bonded to one O(3), one O(4), one O(8), and two equivalent O(6) atoms to form a mixture of edge and corner-sharing MgO5 trigonal bipyramids. In the third Mg site, Mg(3) is bonded to one O(1), one O(5), one O(6), and two equivalent O(3) atoms to form a mixture of edge and corner-sharing MgO5 trigonal bipyramids. In the fourth Mg site, Mg(4) is bonded to one O(2), one O(5), one O(6), and two equivalent O(4) atoms to form a mixture of edge and corner-sharing MgO5 trigonal bipyramids. In the fifth Mg site, Mg(5) is bonded to one O(3), one O(7), one O(8), and two equivalent O(1) atoms to form a mixture of edge and corner-sharing MgO5 trigonal bipyramids. In the sixth Mg site, Mg(6) is bonded to one O(4), one O(7), one O(8), and two equivalent O(2) atoms to form a mixture of edge and corner-sharing MgO5 trigonal bipyramids. Si(1) is bonded in a distorted see-saw-like geometry to one O(1), one O(2), one O(5), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Mg(3), two equivalent Mg(5), and one Si(1) atom to form OMg4Si trigonal bipyramids that share corners with two equivalent O(1)Mg4Si trigonal bipyramids, corners with two equivalent O(2)Mg4Si trigonal bipyramids, corners with two equivalent O(6)Mg5 trigonal bipyramids, edges with two equivalent O(3)CsMg4 trigonal bipyramids, and edges with two equivalent O(8)Mg5 trigonal bipyramids. In the second O site, O(2) is bonded to one Mg(1), one Mg(4), two equivalent Mg(6), and one Si(1) atom to form OMg4Si trigonal bipyramids that share corners with two equivalent O(1)Mg4Si trigonal bipyramids, corners with two equivalent O(2)Mg4Si trigonal bipyramids, corners with two equivalent O(6)Mg5 trigonal bipyramids, edges with two equivalent O(4)CsMg4 trigonal bipyramids, and edges with two equivalent O(8)Mg5 trigonal bipyramids. In the third O site, O(3) is bonded to one Cs(1), one Mg(2), one Mg(5), and two equivalent Mg(3) atoms to form distorted OCsMg4 trigonal bipyramids that share corners with two equivalent O(3)CsMg4 trigonal bipyramids, corners with two equivalent O(4)CsMg4 trigonal bipyramids, corners with two equivalent O(8)Mg5 trigonal bipyramids, edges with two equivalent O(1)Mg4Si trigonal bipyramids, and edges with two equivalent O(6)Mg5 trigonal bipyramids. In the fourth O site, O(4) is bonded to one Cs(1), one Mg(2), one Mg(6), and two equivalent Mg(4) atoms to form distorted OCsMg4 trigonal bipyramids that share corners with two equivalent O(3)CsMg4 trigonal bipyramids, corners with two equivalent O(4)CsMg4 trigonal bipyramids, corners with two equivalent O(8)Mg5 trigonal bipyramids, edges with two equivalent O(2)Mg4Si trigonal bipyramids, and edges with two equivalent O(6)Mg5 trigonal bipyramids. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to two equivalent Cs(1), one Mg(3), one Mg(4), and one Si(1) atom. In the sixth O site, O(6) is bonded to one Mg(1), one Mg(3), one Mg(4), and two equivalent Mg(2) atoms to form OMg5 trigonal bipyramids that share corners with two equivalent O(1)Mg4Si trigonal bipyramids, corners with two equivalent O(2)Mg4Si trigonal bipyramids, corners with two equivalent O(6)Mg5 trigonal bipyramids, edges with two equivalent O(3)CsMg4 trigonal bipyramids, edges with two equivalent O(4)CsMg4 trigonal bipyramids, and edges with two equivalent O(8)Mg5 trigonal bipyramids. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Cs(1), one Mg(5), one Mg(6), and one Si(1) atom. In the eighth O site, O(8) is bonded to one Mg(2), one Mg(5), one Mg(6), and two equivalent Mg(1) atoms to form OMg5 trigonal bipyramids that share corners with two equivalent O(3)CsMg4 trigonal bipyramids, corners with two equivalent O(4)CsMg4 trigonal bipyramids, corners with two equivalent O(8)Mg5 trigonal bipyramids, edges with two equivalent O(1)Mg4Si trigonal bipyramids, edges with two equivalent O(2)Mg4Si trigonal bipyramids, and edges with two equivalent O(6)Mg5 trigonal bipyramids. is represented by the CIF card [CIF]
data_CsMg6SiO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.390
_cell_length_b   4.208
_cell_length_c   6.807
_cell_angle_alpha   89.557
_cell_angle_beta   88.595
_cell_angle_gamma   90.013
_symmetry_Int_Tables_number   1
_cell_volume   211.617
_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
  Cs  Cs0  1  0.976  0.486  0.643  1.0
  Mg  Mg1  1  0.506  0.998  0.895  1.0
  Mg  Mg2  1  0.495  0.499  0.580  1.0
  Mg  Mg3  1  0.274  0.999  0.400  1.0
  Mg  Mg4  1  0.710  0.999  0.376  1.0
  Mg  Mg5  1  0.285  0.494  0.104  1.0
  Mg  Mg6  1  0.734  0.495  0.085  1.0
  Si  Si7  1  0.011  0.961  0.102  1.0
  O  O8  1  0.273  0.001  0.091  1.0
  O  O9  1  0.747  0.001  0.066  1.0
  O  O10  1  0.289  0.499  0.400  1.0
  O  O11  1  0.688  0.499  0.372  1.0
  O  O12  1  0.994  0.001  0.346  1.0
  O  O13  1  0.498  0.999  0.594  1.0
  O  O14  1  0.014  0.571  0.043  1.0
  O  O15  1  0.507  0.499  0.904  1.0
[/CIF]
.
The material structure described by CsMg6SiO8 crystallizes in the triclinic P1 space group. Cs(1) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(7), and two equivalent O(5) atoms. There are six inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(1), one O(2), one O(6), and two equivalent O(8) atoms to form a mixture of edge and corner-sharing MgO5 trigonal bipyramids. In the second Mg site, Mg(2) is bonded to one O(3), one O(4), one O(8), and two equivalent O(6) atoms to form a mixture of edge and corner-sharing MgO5 trigonal bipyramids. In the third Mg site, Mg(3) is bonded to one O(1), one O(5), one O(6), and two equivalent O(3) atoms to form a mixture of edge and corner-sharing MgO5 trigonal bipyramids. In the fourth Mg site, Mg(4) is bonded to one O(2), one O(5), one O(6), and two equivalent O(4) atoms to form a mixture of edge and corner-sharing MgO5 trigonal bipyramids. In the fifth Mg site, Mg(5) is bonded to one O(3), one O(7), one O(8), and two equivalent O(1) atoms to form a mixture of edge and corner-sharing MgO5 trigonal bipyramids. In the sixth Mg site, Mg(6) is bonded to one O(4), one O(7), one O(8), and two equivalent O(2) atoms to form a mixture of edge and corner-sharing MgO5 trigonal bipyramids. Si(1) is bonded in a distorted see-saw-like geometry to one O(1), one O(2), one O(5), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Mg(3), two equivalent Mg(5), and one Si(1) atom to form OMg4Si trigonal bipyramids that share corners with two equivalent O(1)Mg4Si trigonal bipyramids, corners with two equivalent O(2)Mg4Si trigonal bipyramids, corners with two equivalent O(6)Mg5 trigonal bipyramids, edges with two equivalent O(3)CsMg4 trigonal bipyramids, and edges with two equivalent O(8)Mg5 trigonal bipyramids. In the second O site, O(2) is bonded to one Mg(1), one Mg(4), two equivalent Mg(6), and one Si(1) atom to form OMg4Si trigonal bipyramids that share corners with two equivalent O(1)Mg4Si trigonal bipyramids, corners with two equivalent O(2)Mg4Si trigonal bipyramids, corners with two equivalent O(6)Mg5 trigonal bipyramids, edges with two equivalent O(4)CsMg4 trigonal bipyramids, and edges with two equivalent O(8)Mg5 trigonal bipyramids. In the third O site, O(3) is bonded to one Cs(1), one Mg(2), one Mg(5), and two equivalent Mg(3) atoms to form distorted OCsMg4 trigonal bipyramids that share corners with two equivalent O(3)CsMg4 trigonal bipyramids, corners with two equivalent O(4)CsMg4 trigonal bipyramids, corners with two equivalent O(8)Mg5 trigonal bipyramids, edges with two equivalent O(1)Mg4Si trigonal bipyramids, and edges with two equivalent O(6)Mg5 trigonal bipyramids. In the fourth O site, O(4) is bonded to one Cs(1), one Mg(2), one Mg(6), and two equivalent Mg(4) atoms to form distorted OCsMg4 trigonal bipyramids that share corners with two equivalent O(3)CsMg4 trigonal bipyramids, corners with two equivalent O(4)CsMg4 trigonal bipyramids, corners with two equivalent O(8)Mg5 trigonal bipyramids, edges with two equivalent O(2)Mg4Si trigonal bipyramids, and edges with two equivalent O(6)Mg5 trigonal bipyramids. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to two equivalent Cs(1), one Mg(3), one Mg(4), and one Si(1) atom. In the sixth O site, O(6) is bonded to one Mg(1), one Mg(3), one Mg(4), and two equivalent Mg(2) atoms to form OMg5 trigonal bipyramids that share corners with two equivalent O(1)Mg4Si trigonal bipyramids, corners with two equivalent O(2)Mg4Si trigonal bipyramids, corners with two equivalent O(6)Mg5 trigonal bipyramids, edges with two equivalent O(3)CsMg4 trigonal bipyramids, edges with two equivalent O(4)CsMg4 trigonal bipyramids, and edges with two equivalent O(8)Mg5 trigonal bipyramids. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Cs(1), one Mg(5), one Mg(6), and one Si(1) atom. In the eighth O site, O(8) is bonded to one Mg(2), one Mg(5), one Mg(6), and two equivalent Mg(1) atoms to form OMg5 trigonal bipyramids that share corners with two equivalent O(3)CsMg4 trigonal bipyramids, corners with two equivalent O(4)CsMg4 trigonal bipyramids, corners with two equivalent O(8)Mg5 trigonal bipyramids, edges with two equivalent O(1)Mg4Si trigonal bipyramids, edges with two equivalent O(2)Mg4Si trigonal bipyramids, and edges with two equivalent O(6)Mg5 trigonal bipyramids. is represented by the CIF card [CIF]
data_CsMg6SiO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.390
_cell_length_b   4.208
_cell_length_c   6.807
_cell_angle_alpha   89.557
_cell_angle_beta   88.595
_cell_angle_gamma   90.013
_symmetry_Int_Tables_number   1
_cell_volume   211.617
_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
  Cs  Cs0  1  0.976  0.486  0.643  1.0
  Mg  Mg1  1  0.506  0.998  0.895  1.0
  Mg  Mg2  1  0.495  0.499  0.580  1.0
  Mg  Mg3  1  0.274  0.999  0.400  1.0
  Mg  Mg4  1  0.710  0.999  0.376  1.0
  Mg  Mg5  1  0.285  0.494  0.104  1.0
  Mg  Mg6  1  0.734  0.495  0.085  1.0
  Si  Si7  1  0.011  0.961  0.102  1.0
  O  O8  1  0.273  0.001  0.091  1.0
  O  O9  1  0.747  0.001  0.066  1.0
  O  O10  1  0.289  0.499  0.400  1.0
  O  O11  1  0.688  0.499  0.372  1.0
  O  O12  1  0.994  0.001  0.346  1.0
  O  O13  1  0.498  0.999  0.594  1.0
  O  O14  1  0.014  0.571  0.043  1.0
  O  O15  1  0.507  0.499  0.904  1.0
[/CIF]
.