The material structure described by Co2(OH)(AsO4) crystallizes in the orthorhombic Pnnm space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form CoO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra, corners with four equivalent Co(2)O5 trigonal bipyramids, and edges with two equivalent Co(1)O6 octahedra. In the second Co site, Co(2) is bonded to one O(2), two equivalent O(3), and two equivalent O(4) atoms to form CoO5 trigonal bipyramids that share corners with four equivalent Co(1)O6 octahedra, corners with four equivalent As(1)O4 tetrahedra, and  an edgeedge with one Co(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 54-66°. As(1) is bonded to one O(1), one O(3), and two equivalent O(4) atoms to form AsO4 tetrahedra that share corners with four equivalent Co(1)O6 octahedra and corners with four equivalent Co(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 56-64°. H(1) is bonded in a single-bond geometry to one O(2) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Co(1) and one As(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Co(2), two equivalent Co(1), and one H(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Co(2) and one As(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Co(1), one Co(2), and one As(1) atom. is represented by the CIF card [CIF]
data_Co2AsHO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.154
_cell_length_b   8.411
_cell_length_c   8.673
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   448.941
_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  0.745  0.500  0.500  1.0
  Co  Co1  1  0.755  0.000  0.000  1.0
  Co  Co2  1  0.255  0.500  0.500  1.0
  Co  Co3  1  0.245  0.000  0.000  1.0
  Co  Co4  1  0.500  0.636  0.127  1.0
  Co  Co5  1  0.500  0.364  0.873  1.0
  Co  Co6  1  0.000  0.136  0.373  1.0
  Co  Co7  1  0.000  0.864  0.627  1.0
  As  As8  1  0.000  0.750  0.255  1.0
  As  As9  1  0.000  0.250  0.745  1.0
  As  As10  1  0.500  0.250  0.245  1.0
  As  As11  1  0.500  0.750  0.755  1.0
  H  H12  1  0.500  0.718  0.405  1.0
  H  H13  1  0.500  0.282  0.595  1.0
  H  H14  1  0.000  0.218  0.095  1.0
  H  H15  1  0.000  0.782  0.905  1.0
  O  O16  1  0.000  0.573  0.356  1.0
  O  O17  1  0.000  0.427  0.644  1.0
  O  O18  1  0.500  0.073  0.144  1.0
  O  O19  1  0.500  0.927  0.856  1.0
  O  O20  1  0.500  0.607  0.370  1.0
  O  O21  1  0.500  0.393  0.630  1.0
  O  O22  1  0.000  0.107  0.130  1.0
  O  O23  1  0.000  0.893  0.870  1.0
  O  O24  1  0.000  0.898  0.394  1.0
  O  O25  1  0.000  0.102  0.606  1.0
  O  O26  1  0.500  0.398  0.106  1.0
  O  O27  1  0.500  0.602  0.894  1.0
  O  O28  1  0.775  0.771  0.137  1.0
  O  O29  1  0.775  0.229  0.863  1.0
  O  O30  1  0.725  0.271  0.363  1.0
  O  O31  1  0.725  0.729  0.637  1.0
  O  O32  1  0.225  0.229  0.863  1.0
  O  O33  1  0.225  0.771  0.137  1.0
  O  O34  1  0.275  0.729  0.637  1.0
  O  O35  1  0.275  0.271  0.363  1.0
[/CIF]
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The material structure described by Co2(OH)(AsO4) crystallizes in the orthorhombic Pnnm space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form CoO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra, corners with four equivalent Co(2)O5 trigonal bipyramids, and edges with two equivalent Co(1)O6 octahedra. In the second Co site, Co(2) is bonded to one O(2), two equivalent O(3), and two equivalent O(4) atoms to form CoO5 trigonal bipyramids that share corners with four equivalent Co(1)O6 octahedra, corners with four equivalent As(1)O4 tetrahedra, and  an edgeedge with one Co(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 54-66°. As(1) is bonded to one O(1), one O(3), and two equivalent O(4) atoms to form AsO4 tetrahedra that share corners with four equivalent Co(1)O6 octahedra and corners with four equivalent Co(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 56-64°. H(1) is bonded in a single-bond geometry to one O(2) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Co(1) and one As(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Co(2), two equivalent Co(1), and one H(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Co(2) and one As(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Co(1), one Co(2), and one As(1) atom. is represented by the CIF card [CIF]
data_Co2AsHO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.154
_cell_length_b   8.411
_cell_length_c   8.673
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   448.941
_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  0.745  0.500  0.500  1.0
  Co  Co1  1  0.755  0.000  0.000  1.0
  Co  Co2  1  0.255  0.500  0.500  1.0
  Co  Co3  1  0.245  0.000  0.000  1.0
  Co  Co4  1  0.500  0.636  0.127  1.0
  Co  Co5  1  0.500  0.364  0.873  1.0
  Co  Co6  1  0.000  0.136  0.373  1.0
  Co  Co7  1  0.000  0.864  0.627  1.0
  As  As8  1  0.000  0.750  0.255  1.0
  As  As9  1  0.000  0.250  0.745  1.0
  As  As10  1  0.500  0.250  0.245  1.0
  As  As11  1  0.500  0.750  0.755  1.0
  H  H12  1  0.500  0.718  0.405  1.0
  H  H13  1  0.500  0.282  0.595  1.0
  H  H14  1  0.000  0.218  0.095  1.0
  H  H15  1  0.000  0.782  0.905  1.0
  O  O16  1  0.000  0.573  0.356  1.0
  O  O17  1  0.000  0.427  0.644  1.0
  O  O18  1  0.500  0.073  0.144  1.0
  O  O19  1  0.500  0.927  0.856  1.0
  O  O20  1  0.500  0.607  0.370  1.0
  O  O21  1  0.500  0.393  0.630  1.0
  O  O22  1  0.000  0.107  0.130  1.0
  O  O23  1  0.000  0.893  0.870  1.0
  O  O24  1  0.000  0.898  0.394  1.0
  O  O25  1  0.000  0.102  0.606  1.0
  O  O26  1  0.500  0.398  0.106  1.0
  O  O27  1  0.500  0.602  0.894  1.0
  O  O28  1  0.775  0.771  0.137  1.0
  O  O29  1  0.775  0.229  0.863  1.0
  O  O30  1  0.725  0.271  0.363  1.0
  O  O31  1  0.725  0.729  0.637  1.0
  O  O32  1  0.225  0.229  0.863  1.0
  O  O33  1  0.225  0.771  0.137  1.0
  O  O34  1  0.275  0.729  0.637  1.0
  O  O35  1  0.275  0.271  0.363  1.0
[/CIF]
.