The crystal structure described by Co4ZnO9 crystallizes in the triclinic P1 space group. There are eight inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(13), one O(14), one O(17), and one O(8) atom to form a mixture of distorted edge and corner-sharing CoO5 trigonal bipyramids. In the second Co site, Co(2) is bonded to one O(1), one O(11), one O(17), one O(18), and one O(6) atom to form a mixture of distorted edge and corner-sharing CoO5 trigonal bipyramids. In the third Co site, Co(3) is bonded to one O(12), one O(14), one O(15), one O(2), and one O(7) atom to form a mixture of distorted edge and corner-sharing CoO5 trigonal bipyramids. In the fourth Co site, Co(4) is bonded to one O(12), one O(16), one O(18), one O(2), and one O(5) atom to form a mixture of distorted edge and corner-sharing CoO5 trigonal bipyramids. In the fifth Co site, Co(5) is bonded to one O(1), one O(11), one O(12), one O(16), and one O(9) atom to form a mixture of distorted edge and corner-sharing CoO5 trigonal bipyramids. In the sixth Co site, Co(6) is bonded to one O(10), one O(11), one O(13), one O(18), and one O(2) atom to form a mixture of distorted edge and corner-sharing CoO5 trigonal bipyramids. In the seventh Co site, Co(7) is bonded to one O(13), one O(15), one O(17), one O(2), and one O(4) atom to form a mixture of distorted edge and corner-sharing CoO5 trigonal bipyramids. In the eighth Co site, Co(8) is bonded to one O(1), one O(14), one O(15), one O(16), and one O(3) atom to form a mixture of distorted edge and corner-sharing CoO5 trigonal bipyramids. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 8-coordinate geometry to one O(10), one O(11), one O(12), one O(13), one O(14), one O(7), one O(8), and one O(9) atom. In the second Zn site, Zn(2) is bonded in a 8-coordinate geometry to one O(15), one O(16), one O(17), one O(18), one O(3), one O(4), one O(5), and one O(6) atom. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted square co-planar geometry to one Co(1), one Co(2), one Co(5), and one Co(8) atom. In the second O site, O(2) is bonded in a distorted square co-planar geometry to one Co(3), one Co(4), one Co(6), and one Co(7) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Co(8) and one Zn(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Co(7) and one Zn(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Co(4) and one Zn(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Co(2) and one Zn(2) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Co(3) and one Zn(1) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Co(1) and one Zn(1) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Co(5) and one Zn(1) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one Co(6) and one Zn(1) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Co(2), one Co(5), one Co(6), and one Zn(1) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Co(3), one Co(4), one Co(5), and one Zn(1) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Co(1), one Co(6), one Co(7), and one Zn(1) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Co(1), one Co(3), one Co(8), and one Zn(1) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one Co(3), one Co(7), one Co(8), and one Zn(2) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Co(4), one Co(5), one Co(8), and one Zn(2) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Co(1), one Co(2), one Co(7), and one Zn(2) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Co(2), one Co(4), one Co(6), and one Zn(2) atom. is represented by the CIF card [CIF]
data_ZnCo4O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.862
_cell_length_b   8.221
_cell_length_c   8.212
_cell_angle_alpha   90.118
_cell_angle_beta   90.158
_cell_angle_gamma   89.996
_symmetry_Int_Tables_number   1
_cell_volume   328.256
_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
  Zn  Zn0  1  0.103  0.249  0.251  1.0
  Zn  Zn1  1  0.895  0.748  0.751  1.0
  Co  Co2  1  0.612  0.535  0.338  1.0
  Co  Co3  1  0.386  0.839  0.466  1.0
  Co  Co4  1  0.613  0.338  0.966  1.0
  Co  Co5  1  0.387  0.034  0.837  1.0
  Co  Co6  1  0.613  0.966  0.162  1.0
  Co  Co7  1  0.613  0.162  0.534  1.0
  Co  Co8  1  0.390  0.466  0.662  1.0
  Co  Co9  1  0.388  0.662  0.034  1.0
  O  O10  1  0.506  0.750  0.250  1.0
  O  O11  1  0.493  0.250  0.750  1.0
  O  O12  1  0.058  0.683  0.979  1.0
  O  O13  1  0.060  0.521  0.682  1.0
  O  O14  1  0.057  0.978  0.817  1.0
  O  O15  1  0.058  0.817  0.523  1.0
  O  O16  1  0.942  0.317  0.023  1.0
  O  O17  1  0.941  0.479  0.318  1.0
  O  O18  1  0.943  0.020  0.182  1.0
  O  O19  1  0.942  0.183  0.479  1.0
  O  O20  1  0.436  0.042  0.354  1.0
  O  O21  1  0.449  0.144  0.041  1.0
  O  O22  1  0.448  0.356  0.458  1.0
  O  O23  1  0.436  0.459  0.145  1.0
  O  O24  1  0.565  0.541  0.856  1.0
  O  O25  1  0.552  0.855  0.958  1.0
  O  O26  1  0.555  0.645  0.542  1.0
  O  O27  1  0.562  0.960  0.644  1.0
[/CIF]
.
The crystal structure described by Co4ZnO9 crystallizes in the triclinic P1 space group. There are eight inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(13), one O(14), one O(17), and one O(8) atom to form a mixture of distorted edge and corner-sharing CoO5 trigonal bipyramids. In the second Co site, Co(2) is bonded to one O(1), one O(11), one O(17), one O(18), and one O(6) atom to form a mixture of distorted edge and corner-sharing CoO5 trigonal bipyramids. In the third Co site, Co(3) is bonded to one O(12), one O(14), one O(15), one O(2), and one O(7) atom to form a mixture of distorted edge and corner-sharing CoO5 trigonal bipyramids. In the fourth Co site, Co(4) is bonded to one O(12), one O(16), one O(18), one O(2), and one O(5) atom to form a mixture of distorted edge and corner-sharing CoO5 trigonal bipyramids. In the fifth Co site, Co(5) is bonded to one O(1), one O(11), one O(12), one O(16), and one O(9) atom to form a mixture of distorted edge and corner-sharing CoO5 trigonal bipyramids. In the sixth Co site, Co(6) is bonded to one O(10), one O(11), one O(13), one O(18), and one O(2) atom to form a mixture of distorted edge and corner-sharing CoO5 trigonal bipyramids. In the seventh Co site, Co(7) is bonded to one O(13), one O(15), one O(17), one O(2), and one O(4) atom to form a mixture of distorted edge and corner-sharing CoO5 trigonal bipyramids. In the eighth Co site, Co(8) is bonded to one O(1), one O(14), one O(15), one O(16), and one O(3) atom to form a mixture of distorted edge and corner-sharing CoO5 trigonal bipyramids. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 8-coordinate geometry to one O(10), one O(11), one O(12), one O(13), one O(14), one O(7), one O(8), and one O(9) atom. In the second Zn site, Zn(2) is bonded in a 8-coordinate geometry to one O(15), one O(16), one O(17), one O(18), one O(3), one O(4), one O(5), and one O(6) atom. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted square co-planar geometry to one Co(1), one Co(2), one Co(5), and one Co(8) atom. In the second O site, O(2) is bonded in a distorted square co-planar geometry to one Co(3), one Co(4), one Co(6), and one Co(7) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Co(8) and one Zn(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Co(7) and one Zn(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Co(4) and one Zn(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Co(2) and one Zn(2) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Co(3) and one Zn(1) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Co(1) and one Zn(1) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Co(5) and one Zn(1) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one Co(6) and one Zn(1) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Co(2), one Co(5), one Co(6), and one Zn(1) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one Co(3), one Co(4), one Co(5), and one Zn(1) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Co(1), one Co(6), one Co(7), and one Zn(1) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Co(1), one Co(3), one Co(8), and one Zn(1) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one Co(3), one Co(7), one Co(8), and one Zn(2) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Co(4), one Co(5), one Co(8), and one Zn(2) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Co(1), one Co(2), one Co(7), and one Zn(2) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Co(2), one Co(4), one Co(6), and one Zn(2) atom. is represented by the CIF card [CIF]
data_ZnCo4O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.862
_cell_length_b   8.221
_cell_length_c   8.212
_cell_angle_alpha   90.118
_cell_angle_beta   90.158
_cell_angle_gamma   89.996
_symmetry_Int_Tables_number   1
_cell_volume   328.256
_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
  Zn  Zn0  1  0.103  0.249  0.251  1.0
  Zn  Zn1  1  0.895  0.748  0.751  1.0
  Co  Co2  1  0.612  0.535  0.338  1.0
  Co  Co3  1  0.386  0.839  0.466  1.0
  Co  Co4  1  0.613  0.338  0.966  1.0
  Co  Co5  1  0.387  0.034  0.837  1.0
  Co  Co6  1  0.613  0.966  0.162  1.0
  Co  Co7  1  0.613  0.162  0.534  1.0
  Co  Co8  1  0.390  0.466  0.662  1.0
  Co  Co9  1  0.388  0.662  0.034  1.0
  O  O10  1  0.506  0.750  0.250  1.0
  O  O11  1  0.493  0.250  0.750  1.0
  O  O12  1  0.058  0.683  0.979  1.0
  O  O13  1  0.060  0.521  0.682  1.0
  O  O14  1  0.057  0.978  0.817  1.0
  O  O15  1  0.058  0.817  0.523  1.0
  O  O16  1  0.942  0.317  0.023  1.0
  O  O17  1  0.941  0.479  0.318  1.0
  O  O18  1  0.943  0.020  0.182  1.0
  O  O19  1  0.942  0.183  0.479  1.0
  O  O20  1  0.436  0.042  0.354  1.0
  O  O21  1  0.449  0.144  0.041  1.0
  O  O22  1  0.448  0.356  0.458  1.0
  O  O23  1  0.436  0.459  0.145  1.0
  O  O24  1  0.565  0.541  0.856  1.0
  O  O25  1  0.552  0.855  0.958  1.0
  O  O26  1  0.555  0.645  0.542  1.0
  O  O27  1  0.562  0.960  0.644  1.0
[/CIF]
.