data_1008810
_chemical_name_systematic
;
Cobalt magnesium germanium oxide (7.25/6.75/5/24)
;
_chemical_formula_structural       '(Co7.25 Mg6.75) Ge5 O24'
_chemical_formula_sum              'Co7.25 Ge5 Mg6.75 O24'
_publ_section_title
;
A new structural family: M10n-2 Ge3n+1 O16n with M = (Co, Mg) and (Ni,
Mg)
;
loop_
_publ_author_name
  'Levy, D'
  'Barbier, J'
_journal_name_full                 'Journal of Solid State Chemistry'
_journal_coden_ASTM                JSSCBI
_journal_volume                    130
_journal_year                      1997
_journal_page_first                9
_journal_page_last                 19
_cell_length_a                     14.537(2)
_cell_length_b                     10.219(2)
_cell_length_c                     5.950(1)
_cell_angle_alpha                  90
_cell_angle_beta                   90
_cell_angle_gamma                  90
_cell_volume                       883.9
_cell_formula_units_Z              2
_symmetry_space_group_name_H-M     'P b a m'
_symmetry_Int_Tables_number        55
_symmetry_cell_setting             orthorhombic
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '-x,-y,z'
  '1/2+x,1/2-y,-z'
  '1/2-x,1/2+y,-z'
  '-x,-y,-z'
  'x,y,-z'
  '1/2-x,1/2+y,z'
  '1/2+x,1/2-y,z'
loop_
_atom_type_symbol
_atom_type_oxidation_number
  Ge4+   4.000
  Co2+   2.000
  Mg2+   2.000
  O2-   -2.000
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
_atom_site_calc_flag
  Ge1   Ge4+   2 a 0. 0. 0. 1.  0 d
  Ge2   Ge4+   4 g 0.1256(1) 0.5016(1) 0. 1.  0 d
  Ge3   Ge4+   4 h 0.1860(1) 0.3238(1) 0.5 1.  0 d
  Co1   Co2+   2 d 0. 0.5 0.5 0.342  0 d
  Mg1   Mg2+   2 d 0. 0.5 0.5 0.658  0 d
  Co2   Co2+   2 b 0. 0. 0.5 0.898  0 d
  Mg2   Mg2+   2 b 0. 0. 0.5 0.102  0 d
  Co3   Co2+   4 g 0.1749(1) 0.1777(1) 0. 0.258  0 d
  Mg3   Mg2+   4 g 0.1749(1) 0.1777(1) 0. 0.742  0 d
  Co4   Co2+   4 h 0.3269(1) 0.1469(1) 0.5 0.383  0 d
  Mg4   Mg2+   4 h 0.3269(1) 0.1469(1) 0.5 0.617  0 d
  Co5   Co2+   8 i -0.0044(1) 0.2522(1) 0.2406(1) 0.517  0 d
  Mg5   Mg2+   8 i -0.0044(1) 0.2522(1) 0.2406(1) 0.483  0 d
  Co6   Co2+   8 i 0.3309(1) 0.4186(1) 0.2457(1) 0.666  0 d
  Mg6   Mg2+   8 i 0.3309(1) 0.4186(1) 0.2457(1) 0.334  0 d
  O1    O2-    4 g 0.0844(1) 0.3380(2) 0. 1.  0 d
  O2    O2-    4 g 0.4221(1) 0.3496(2) 0. 1.  0 d
  O3    O2-    4 g 0.2524(1) 0.0038(2) 0. 1.  0 d
  O4    O2-    4 h 0.0680(1) 0.3301(2) 0.5 1.  0 d
  O5    O2-    4 h 0.4127(1) 0.3300(2) 0.5 1.  0 d
  O6    O2-    4 h 0.2579(1) -0.0233(2) 0.5 1.  0 d
  O7    O2-    8 i 0.0751(1) 0.0779(1) 0.2220(2) 1.  0 d
  O8    O2-    8 i 0.4141(1) 0.0803(1) 0.2472(2) 1.  0 d
  O9    O2-    8 i 0.2420(1) 0.2498(1) 0.2730(3) 1.  0 d
_refine_ls_R_factor_all            0.039