The compound described by SrCo2(AsO4)2 crystallizes in the triclinic P-1 space group. Sr(1) is bonded in a 6-coordinate geometry to one O(4), one O(5), one O(6), one O(7), and two equivalent O(8) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(2), one O(4), one O(5), and two equivalent O(3) atoms to form CoO6 octahedra that share corners with two equivalent As(2)O4 tetrahedra and  an edgeedge with one Co(1)O6 octahedra. In the second Co site, Co(2) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and one O(6) atom. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 3-coordinate geometry to one O(3), one O(4), and one O(7) atom. In the second As site, As(2) is bonded to one O(1), one O(5), one O(6), and one O(8) atom to form AsO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-66°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Co(1), one Co(2), and one As(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Co(1), one Co(2), and one O(7) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Co(2), two equivalent Co(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted tetrahedral geometry to one Sr(1), one Co(1), one Co(2), and one As(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Sr(1), one Co(1), and one As(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Sr(1), one Co(2), and one As(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Sr(1), one As(1), and one O(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to two equivalent Sr(1) and one As(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrCo2(AsO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.872
_cell_length_b   7.121
_cell_length_c   9.267
_cell_angle_alpha   106.436
_cell_angle_beta   108.426
_cell_angle_gamma   97.703
_symmetry_Int_Tables_number   1
_cell_volume   341.783
_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
  Sr  Sr0  1  0.820  0.757  0.510  1.0
  Sr  Sr1  1  0.180  0.243  0.490  1.0
  Co  Co2  1  0.924  0.210  0.088  1.0
  Co  Co3  1  0.076  0.790  0.912  1.0
  Co  Co4  1  0.659  0.774  0.091  1.0
  Co  Co5  1  0.341  0.226  0.909  1.0
  As  As6  1  0.477  0.832  0.728  1.0
  As  As7  1  0.523  0.168  0.272  1.0
  As  As8  1  0.183  0.689  0.257  1.0
  As  As9  1  0.817  0.311  0.743  1.0
  O  O10  1  0.973  0.692  0.078  1.0
  O  O11  1  0.027  0.308  0.922  1.0
  O  O12  1  0.652  0.382  0.094  1.0
  O  O13  1  0.348  0.618  0.906  1.0
  O  O14  1  0.258  0.081  0.088  1.0
  O  O15  1  0.742  0.919  0.912  1.0
  O  O16  1  0.769  0.074  0.221  1.0
  O  O17  1  0.231  0.926  0.779  1.0
  O  O18  1  0.159  0.464  0.295  1.0
  O  O19  1  0.841  0.536  0.705  1.0
  O  O20  1  0.479  0.781  0.267  1.0
  O  O21  1  0.521  0.219  0.733  1.0
  O  O22  1  0.365  0.584  0.744  1.0
  O  O23  1  0.635  0.416  0.256  1.0
  O  O24  1  0.125  0.862  0.405  1.0
  O  O25  1  0.875  0.138  0.595  1.0
[/CIF]
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The compound described by SrCo2(AsO4)2 crystallizes in the triclinic P-1 space group. Sr(1) is bonded in a 6-coordinate geometry to one O(4), one O(5), one O(6), one O(7), and two equivalent O(8) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(2), one O(4), one O(5), and two equivalent O(3) atoms to form CoO6 octahedra that share corners with two equivalent As(2)O4 tetrahedra and  an edgeedge with one Co(1)O6 octahedra. In the second Co site, Co(2) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and one O(6) atom. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 3-coordinate geometry to one O(3), one O(4), and one O(7) atom. In the second As site, As(2) is bonded to one O(1), one O(5), one O(6), and one O(8) atom to form AsO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-66°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Co(1), one Co(2), and one As(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Co(1), one Co(2), and one O(7) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Co(2), two equivalent Co(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted tetrahedral geometry to one Sr(1), one Co(1), one Co(2), and one As(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Sr(1), one Co(1), and one As(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Sr(1), one Co(2), and one As(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Sr(1), one As(1), and one O(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to two equivalent Sr(1) and one As(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrCo2(AsO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.872
_cell_length_b   7.121
_cell_length_c   9.267
_cell_angle_alpha   106.436
_cell_angle_beta   108.426
_cell_angle_gamma   97.703
_symmetry_Int_Tables_number   1
_cell_volume   341.783
_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
  Sr  Sr0  1  0.820  0.757  0.510  1.0
  Sr  Sr1  1  0.180  0.243  0.490  1.0
  Co  Co2  1  0.924  0.210  0.088  1.0
  Co  Co3  1  0.076  0.790  0.912  1.0
  Co  Co4  1  0.659  0.774  0.091  1.0
  Co  Co5  1  0.341  0.226  0.909  1.0
  As  As6  1  0.477  0.832  0.728  1.0
  As  As7  1  0.523  0.168  0.272  1.0
  As  As8  1  0.183  0.689  0.257  1.0
  As  As9  1  0.817  0.311  0.743  1.0
  O  O10  1  0.973  0.692  0.078  1.0
  O  O11  1  0.027  0.308  0.922  1.0
  O  O12  1  0.652  0.382  0.094  1.0
  O  O13  1  0.348  0.618  0.906  1.0
  O  O14  1  0.258  0.081  0.088  1.0
  O  O15  1  0.742  0.919  0.912  1.0
  O  O16  1  0.769  0.074  0.221  1.0
  O  O17  1  0.231  0.926  0.779  1.0
  O  O18  1  0.159  0.464  0.295  1.0
  O  O19  1  0.841  0.536  0.705  1.0
  O  O20  1  0.479  0.781  0.267  1.0
  O  O21  1  0.521  0.219  0.733  1.0
  O  O22  1  0.365  0.584  0.744  1.0
  O  O23  1  0.635  0.416  0.256  1.0
  O  O24  1  0.125  0.862  0.405  1.0
  O  O25  1  0.875  0.138  0.595  1.0
[/CIF]
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