The material described by MgCo4OF11 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one F(1), one F(10), one F(2), one F(3), one F(4), and one F(8) atom to form distorted MgF6 octahedra that share  a cornercorner with one Co(2)F6 octahedra, corners with two equivalent Co(3)OF5 octahedra,  an edgeedge with one Co(4)F6 octahedra, and  a faceface with one Co(2)F6 octahedra. The corner-sharing octahedral tilt angles range from 53-55°. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded in a 5-coordinate geometry to one O(1), one F(10), one F(2), one F(4), and one F(9) atom. In the second Co site, Co(2) is bonded to one F(1), one F(10), one F(11), one F(2), one F(4), and one F(9) atom to form distorted CoF6 octahedra that share  a cornercorner with one Mg(1)F6 octahedra, corners with two equivalent Co(4)F6 octahedra, and  a faceface with one Mg(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 30-55°. In the third Co site, Co(3) is bonded to one O(1), one F(3), one F(5), one F(6), one F(7), and one F(8) atom to form CoOF5 octahedra that share corners with two equivalent Mg(1)F6 octahedra and corners with four equivalent Co(4)F6 octahedra. The corner-sharing octahedral tilt angles range from 33-55°. In the fourth Co site, Co(4) is bonded to one F(1), one F(11), one F(5), one F(6), one F(7), and one F(8) atom to form CoF6 octahedra that share corners with two equivalent Co(2)F6 octahedra, corners with four equivalent Co(3)OF5 octahedra, and  an edgeedge with one Mg(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 30-46°. O(1) is bonded in a bent 150 degrees geometry to one Co(1) and one Co(3) atom. There are eleven inequivalent F sites. In the first F site, F(1) is bonded in a distorted T-shaped geometry to one Mg(1), one Co(2), and one Co(4) atom. In the second F site, F(2) is bonded in a trigonal planar geometry to one Mg(1), one Co(1), and one Co(2) atom. In the third F site, F(3) is bonded in a distorted bent 120 degrees geometry to one Mg(1) and one Co(3) atom. In the fourth F site, F(4) is bonded in a T-shaped geometry to one Mg(1), one Co(1), and one Co(2) atom. In the fifth F site, F(5) is bonded in a bent 150 degrees geometry to one Co(3) and one Co(4) atom. In the sixth F site, F(6) is bonded in a bent 150 degrees geometry to one Co(3) and one Co(4) atom. In the seventh F site, F(7) is bonded in a bent 150 degrees geometry to one Co(3) and one Co(4) atom. In the eighth F site, F(8) is bonded in a distorted trigonal planar geometry to one Mg(1), one Co(3), and one Co(4) atom. In the ninth F site, F(9) is bonded in a bent 150 degrees geometry to one Co(1) and one Co(2) atom. In the tenth F site, F(10) is bonded in a distorted T-shaped geometry to one Mg(1), one Co(1), and one Co(2) atom. In the eleventh F site, F(11) is bonded in a bent 150 degrees geometry to one Co(2) and one Co(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgCo4OF11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.724
_cell_length_b   5.081
_cell_length_c   5.521
_cell_angle_alpha   90.740
_cell_angle_beta   95.604
_cell_angle_gamma   89.641
_symmetry_Int_Tables_number   1
_cell_volume   215.658
_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
  Mg  Mg0  1  0.202  0.996  0.612  1.0
  Co  Co1  1  0.954  0.475  0.490  1.0
  Co  Co2  1  0.984  0.989  0.016  1.0
  Co  Co3  1  0.509  0.510  0.500  1.0
  Co  Co4  1  0.510  0.007  0.013  1.0
  O  O5  1  0.736  0.385  0.505  1.0
  F  F6  1  0.269  0.903  0.970  1.0
  F  F7  1  0.078  0.174  0.325  1.0
  F  F8  1  0.266  0.649  0.495  1.0
  F  F9  1  0.066  0.281  0.782  1.0
  F  F10  1  0.557  0.824  0.315  1.0
  F  F11  1  0.438  0.317  0.200  1.0
  F  F12  1  0.558  0.693  0.811  1.0
  F  F13  1  0.425  0.192  0.684  1.0
  F  F14  1  0.949  0.662  0.185  1.0
  F  F15  1  0.975  0.812  0.674  1.0
  F  F16  1  0.735  0.118  0.998  1.0
[/CIF]
.
The material described by MgCo4OF11 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one F(1), one F(10), one F(2), one F(3), one F(4), and one F(8) atom to form distorted MgF6 octahedra that share  a cornercorner with one Co(2)F6 octahedra, corners with two equivalent Co(3)OF5 octahedra,  an edgeedge with one Co(4)F6 octahedra, and  a faceface with one Co(2)F6 octahedra. The corner-sharing octahedral tilt angles range from 53-55°. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded in a 5-coordinate geometry to one O(1), one F(10), one F(2), one F(4), and one F(9) atom. In the second Co site, Co(2) is bonded to one F(1), one F(10), one F(11), one F(2), one F(4), and one F(9) atom to form distorted CoF6 octahedra that share  a cornercorner with one Mg(1)F6 octahedra, corners with two equivalent Co(4)F6 octahedra, and  a faceface with one Mg(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 30-55°. In the third Co site, Co(3) is bonded to one O(1), one F(3), one F(5), one F(6), one F(7), and one F(8) atom to form CoOF5 octahedra that share corners with two equivalent Mg(1)F6 octahedra and corners with four equivalent Co(4)F6 octahedra. The corner-sharing octahedral tilt angles range from 33-55°. In the fourth Co site, Co(4) is bonded to one F(1), one F(11), one F(5), one F(6), one F(7), and one F(8) atom to form CoF6 octahedra that share corners with two equivalent Co(2)F6 octahedra, corners with four equivalent Co(3)OF5 octahedra, and  an edgeedge with one Mg(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 30-46°. O(1) is bonded in a bent 150 degrees geometry to one Co(1) and one Co(3) atom. There are eleven inequivalent F sites. In the first F site, F(1) is bonded in a distorted T-shaped geometry to one Mg(1), one Co(2), and one Co(4) atom. In the second F site, F(2) is bonded in a trigonal planar geometry to one Mg(1), one Co(1), and one Co(2) atom. In the third F site, F(3) is bonded in a distorted bent 120 degrees geometry to one Mg(1) and one Co(3) atom. In the fourth F site, F(4) is bonded in a T-shaped geometry to one Mg(1), one Co(1), and one Co(2) atom. In the fifth F site, F(5) is bonded in a bent 150 degrees geometry to one Co(3) and one Co(4) atom. In the sixth F site, F(6) is bonded in a bent 150 degrees geometry to one Co(3) and one Co(4) atom. In the seventh F site, F(7) is bonded in a bent 150 degrees geometry to one Co(3) and one Co(4) atom. In the eighth F site, F(8) is bonded in a distorted trigonal planar geometry to one Mg(1), one Co(3), and one Co(4) atom. In the ninth F site, F(9) is bonded in a bent 150 degrees geometry to one Co(1) and one Co(2) atom. In the tenth F site, F(10) is bonded in a distorted T-shaped geometry to one Mg(1), one Co(1), and one Co(2) atom. In the eleventh F site, F(11) is bonded in a bent 150 degrees geometry to one Co(2) and one Co(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgCo4OF11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.724
_cell_length_b   5.081
_cell_length_c   5.521
_cell_angle_alpha   90.740
_cell_angle_beta   95.604
_cell_angle_gamma   89.641
_symmetry_Int_Tables_number   1
_cell_volume   215.658
_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
  Mg  Mg0  1  0.202  0.996  0.612  1.0
  Co  Co1  1  0.954  0.475  0.490  1.0
  Co  Co2  1  0.984  0.989  0.016  1.0
  Co  Co3  1  0.509  0.510  0.500  1.0
  Co  Co4  1  0.510  0.007  0.013  1.0
  O  O5  1  0.736  0.385  0.505  1.0
  F  F6  1  0.269  0.903  0.970  1.0
  F  F7  1  0.078  0.174  0.325  1.0
  F  F8  1  0.266  0.649  0.495  1.0
  F  F9  1  0.066  0.281  0.782  1.0
  F  F10  1  0.557  0.824  0.315  1.0
  F  F11  1  0.438  0.317  0.200  1.0
  F  F12  1  0.558  0.693  0.811  1.0
  F  F13  1  0.425  0.192  0.684  1.0
  F  F14  1  0.949  0.662  0.185  1.0
  F  F15  1  0.975  0.812  0.674  1.0
  F  F16  1  0.735  0.118  0.998  1.0
[/CIF]
.