The compound described by CoGeO3 crystallizes in the triclinic P1 space group. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(11), one O(12), one O(4), one O(5), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one Ge(1)O4 tetrahedra,  a cornercorner with one Ge(3)O4 tetrahedra, corners with two equivalent Ge(2)O4 tetrahedra, corners with two equivalent Ge(4)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, and edges with two equivalent Co(3)O6 octahedra. In the second Co site, Co(2) is bonded to one O(11), one O(12), one O(4), one O(6), one O(7), and one O(9) atom to form CoO6 octahedra that share corners with two equivalent Ge(1)O4 tetrahedra, corners with two equivalent Ge(2)O4 tetrahedra, corners with two equivalent Ge(3)O4 tetrahedra, corners with two equivalent Ge(4)O4 tetrahedra,  an edgeedge with one Co(3)O6 octahedra, and edges with two equivalent Co(1)O6 octahedra. In the third Co site, Co(3) is bonded to one O(10), one O(11), one O(3), one O(4), one O(5), and one O(8) atom to form CoO6 octahedra that share  a cornercorner with one Ge(2)O4 tetrahedra,  a cornercorner with one Ge(4)O4 tetrahedra, corners with two equivalent Ge(1)O4 tetrahedra, corners with two equivalent Ge(3)O4 tetrahedra,  an edgeedge with one Co(2)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent Co(4)O6 octahedra. In the fourth Co site, Co(4) is bonded to one O(1), one O(10), one O(2), one O(3), one O(5), and one O(8) atom to form CoO6 octahedra that share corners with two equivalent Ge(1)O4 tetrahedra, corners with two equivalent Ge(2)O4 tetrahedra, corners with two equivalent Ge(3)O4 tetrahedra, corners with two equivalent Ge(4)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra, and edges with two equivalent Co(3)O6 octahedra. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(3), one O(4), and one O(7) atom to form GeO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, corners with two equivalent Co(4)O6 octahedra, and corners with two equivalent Ge(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-61°. In the second Ge site, Ge(2) is bonded to one O(1), one O(5), one O(7), and one O(9) atom to form GeO4 tetrahedra that share  a cornercorner with one Co(3)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(4)O6 octahedra, and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-61°. In the third Ge site, Ge(3) is bonded to one O(11), one O(2), one O(6), and one O(8) atom to form GeO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, corners with two equivalent Co(4)O6 octahedra, and corners with two equivalent Ge(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-61°. In the fourth Ge site, Ge(4) is bonded to one O(10), one O(12), one O(2), and one O(6) atom to form GeO4 tetrahedra that share  a cornercorner with one Co(3)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(4)O6 octahedra, and corners with two equivalent Ge(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-61°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Co(4), one Ge(1), and one Ge(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Co(4), one Ge(3), and one Ge(4) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Co(3), one Co(4), and one Ge(1) atom. In the fourth O site, O(4) is bonded to one Co(1), one Co(2), one Co(3), and one Ge(1) atom to form a mixture of distorted edge and corner-sharing OCo3Ge trigonal pyramids. In the fifth O site, O(5) is bonded to one Co(1), one Co(3), one Co(4), and one Ge(2) atom to form a mixture of distorted edge and corner-sharing OCo3Ge trigonal pyramids. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Co(2), one Ge(3), and one Ge(4) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Co(2), one Ge(1), and one Ge(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Co(3), one Co(4), and one Ge(3) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one Ge(2) atom. In the tenth O site, O(10) is bonded to one Co(1), one Co(3), one Co(4), and one Ge(4) atom to form a mixture of distorted edge and corner-sharing OCo3Ge trigonal pyramids. In the eleventh O site, O(11) is bonded to one Co(1), one Co(2), one Co(3), and one Ge(3) atom to form a mixture of distorted edge and corner-sharing OCo3Ge trigonal pyramids. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one Ge(4) atom. is represented by the CIF card [CIF]
data_CoGeO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.192
_cell_length_b   6.693
_cell_length_c   6.690
_cell_angle_alpha   85.641
_cell_angle_beta   81.648
_cell_angle_gamma   81.383
_symmetry_Int_Tables_number   1
_cell_volume   227.071
_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
  Co  Co0  1  0.249  0.099  0.900  1.0
  Co  Co1  1  0.751  0.262  0.737  1.0
  Co  Co2  1  0.751  0.909  0.095  1.0
  Co  Co3  1  0.250  0.733  0.267  1.0
  Ge  Ge4  1  0.716  0.792  0.605  1.0
  Ge  Ge5  1  0.215  0.607  0.795  1.0
  Ge  Ge6  1  0.783  0.396  0.207  1.0
  Ge  Ge7  1  0.286  0.206  0.393  1.0
  O  O8  1  0.408  0.708  0.570  1.0
  O  O9  1  0.091  0.429  0.291  1.0
  O  O10  1  0.887  0.862  0.370  1.0
  O  O11  1  0.636  0.973  0.793  1.0
  O  O12  1  0.133  0.796  0.974  1.0
  O  O13  1  0.591  0.291  0.430  1.0
  O  O14  1  0.910  0.570  0.709  1.0
  O  O15  1  0.611  0.630  0.138  1.0
  O  O16  1  0.386  0.372  0.864  1.0
  O  O17  1  0.368  0.025  0.204  1.0
  O  O18  1  0.864  0.205  0.028  1.0
  O  O19  1  0.115  0.135  0.628  1.0
[/CIF]
.
The compound described by CoGeO3 crystallizes in the triclinic P1 space group. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(11), one O(12), one O(4), one O(5), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one Ge(1)O4 tetrahedra,  a cornercorner with one Ge(3)O4 tetrahedra, corners with two equivalent Ge(2)O4 tetrahedra, corners with two equivalent Ge(4)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, and edges with two equivalent Co(3)O6 octahedra. In the second Co site, Co(2) is bonded to one O(11), one O(12), one O(4), one O(6), one O(7), and one O(9) atom to form CoO6 octahedra that share corners with two equivalent Ge(1)O4 tetrahedra, corners with two equivalent Ge(2)O4 tetrahedra, corners with two equivalent Ge(3)O4 tetrahedra, corners with two equivalent Ge(4)O4 tetrahedra,  an edgeedge with one Co(3)O6 octahedra, and edges with two equivalent Co(1)O6 octahedra. In the third Co site, Co(3) is bonded to one O(10), one O(11), one O(3), one O(4), one O(5), and one O(8) atom to form CoO6 octahedra that share  a cornercorner with one Ge(2)O4 tetrahedra,  a cornercorner with one Ge(4)O4 tetrahedra, corners with two equivalent Ge(1)O4 tetrahedra, corners with two equivalent Ge(3)O4 tetrahedra,  an edgeedge with one Co(2)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent Co(4)O6 octahedra. In the fourth Co site, Co(4) is bonded to one O(1), one O(10), one O(2), one O(3), one O(5), and one O(8) atom to form CoO6 octahedra that share corners with two equivalent Ge(1)O4 tetrahedra, corners with two equivalent Ge(2)O4 tetrahedra, corners with two equivalent Ge(3)O4 tetrahedra, corners with two equivalent Ge(4)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra, and edges with two equivalent Co(3)O6 octahedra. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(3), one O(4), and one O(7) atom to form GeO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, corners with two equivalent Co(4)O6 octahedra, and corners with two equivalent Ge(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-61°. In the second Ge site, Ge(2) is bonded to one O(1), one O(5), one O(7), and one O(9) atom to form GeO4 tetrahedra that share  a cornercorner with one Co(3)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(4)O6 octahedra, and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-61°. In the third Ge site, Ge(3) is bonded to one O(11), one O(2), one O(6), and one O(8) atom to form GeO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, corners with two equivalent Co(4)O6 octahedra, and corners with two equivalent Ge(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-61°. In the fourth Ge site, Ge(4) is bonded to one O(10), one O(12), one O(2), and one O(6) atom to form GeO4 tetrahedra that share  a cornercorner with one Co(3)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(4)O6 octahedra, and corners with two equivalent Ge(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-61°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Co(4), one Ge(1), and one Ge(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Co(4), one Ge(3), and one Ge(4) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Co(3), one Co(4), and one Ge(1) atom. In the fourth O site, O(4) is bonded to one Co(1), one Co(2), one Co(3), and one Ge(1) atom to form a mixture of distorted edge and corner-sharing OCo3Ge trigonal pyramids. In the fifth O site, O(5) is bonded to one Co(1), one Co(3), one Co(4), and one Ge(2) atom to form a mixture of distorted edge and corner-sharing OCo3Ge trigonal pyramids. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Co(2), one Ge(3), and one Ge(4) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Co(2), one Ge(1), and one Ge(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Co(3), one Co(4), and one Ge(3) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one Ge(2) atom. In the tenth O site, O(10) is bonded to one Co(1), one Co(3), one Co(4), and one Ge(4) atom to form a mixture of distorted edge and corner-sharing OCo3Ge trigonal pyramids. In the eleventh O site, O(11) is bonded to one Co(1), one Co(2), one Co(3), and one Ge(3) atom to form a mixture of distorted edge and corner-sharing OCo3Ge trigonal pyramids. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Co(1), one Co(2), and one Ge(4) atom. is represented by the CIF card [CIF]
data_CoGeO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.192
_cell_length_b   6.693
_cell_length_c   6.690
_cell_angle_alpha   85.641
_cell_angle_beta   81.648
_cell_angle_gamma   81.383
_symmetry_Int_Tables_number   1
_cell_volume   227.071
_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
  Co  Co0  1  0.249  0.099  0.900  1.0
  Co  Co1  1  0.751  0.262  0.737  1.0
  Co  Co2  1  0.751  0.909  0.095  1.0
  Co  Co3  1  0.250  0.733  0.267  1.0
  Ge  Ge4  1  0.716  0.792  0.605  1.0
  Ge  Ge5  1  0.215  0.607  0.795  1.0
  Ge  Ge6  1  0.783  0.396  0.207  1.0
  Ge  Ge7  1  0.286  0.206  0.393  1.0
  O  O8  1  0.408  0.708  0.570  1.0
  O  O9  1  0.091  0.429  0.291  1.0
  O  O10  1  0.887  0.862  0.370  1.0
  O  O11  1  0.636  0.973  0.793  1.0
  O  O12  1  0.133  0.796  0.974  1.0
  O  O13  1  0.591  0.291  0.430  1.0
  O  O14  1  0.910  0.570  0.709  1.0
  O  O15  1  0.611  0.630  0.138  1.0
  O  O16  1  0.386  0.372  0.864  1.0
  O  O17  1  0.368  0.025  0.204  1.0
  O  O18  1  0.864  0.205  0.028  1.0
  O  O19  1  0.115  0.135  0.628  1.0
[/CIF]
.