The compound described by CaMoAsO5 crystallizes in the triclinic P1 space group. There are four inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 6-coordinate geometry to one O(11), one O(13), one O(15), one O(17), one O(6), and one O(7) atom. In the second Ca site, Ca(2) is bonded in a 7-coordinate geometry to one O(1), one O(12), one O(14), one O(16), one O(18), one O(5), and one O(8) atom. In the third Ca site, Ca(3) is bonded in a 5-coordinate geometry to one O(13), one O(4), one O(5), one O(8), and one O(9) atom. In the fourth Ca site, Ca(4) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(14), one O(16), one O(20), one O(6), and one O(7) atom. There are four inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(11), one O(14), one O(17), one O(20), and one O(4) atom to form MoO6 octahedra that share  a cornercorner with one As(3)O4 tetrahedra and edges with two equivalent Mo(4)O6 octahedra. In the second Mo site, Mo(2) is bonded to one O(12), one O(13), one O(18), one O(19), one O(2), and one O(3) atom to form MoO6 octahedra that share  a cornercorner with one As(3)O4 tetrahedra and edges with two equivalent Mo(3)O6 octahedra. In the third Mo site, Mo(3) is bonded to one O(16), one O(18), one O(19), one O(2), one O(3), and one O(9) atom to form distorted MoO6 octahedra that share  a cornercorner with one As(3)O4 tetrahedra and edges with two equivalent Mo(2)O6 octahedra. In the fourth Mo site, Mo(4) is bonded to one O(1), one O(10), one O(15), one O(17), one O(20), and one O(4) atom to form MoO6 octahedra that share  a cornercorner with one As(3)O4 tetrahedra and edges with two equivalent Mo(1)O6 octahedra. There are four inequivalent As sites. In the first As site, As(1) is bonded in a trigonal non-coplanar geometry to one O(13), one O(5), and one O(9) atom. In the second As site, As(2) is bonded in a distorted trigonal non-coplanar geometry to one O(10), one O(14), and one O(6) atom. In the third As site, As(3) is bonded to one O(11), one O(15), one O(3), and one O(7) atom to form AsO4 tetrahedra that share  a cornercorner with one Mo(1)O6 octahedra,  a cornercorner with one Mo(2)O6 octahedra,  a cornercorner with one Mo(3)O6 octahedra, and  a cornercorner with one Mo(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 41-57°. In the fourth As site, As(4) is bonded in a distorted trigonal non-coplanar geometry to one O(12), one O(16), and one O(8) atom. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a distorted water-like geometry to one Ca(2), one Mo(1), and one Mo(4) atom. In the second O site, O(2) is bonded in a distorted L-shaped geometry to one Mo(2) and one Mo(3) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mo(2), one Mo(3), and one As(3) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Ca(3), one Mo(1), and one Mo(4) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Ca(2), one Ca(3), and one As(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Ca(1), one Ca(4), and one As(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Ca(1), one Ca(4), and one As(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Ca(2), one Ca(3), and one As(4) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Ca(3), one Mo(3), and one As(1) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Ca(4), one Mo(4), and one As(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Ca(1), one Mo(1), and one As(3) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Ca(2), one Ca(4), one Mo(2), and one As(4) atom. In the thirteenth O site, O(13) is bonded in a distorted tetrahedral geometry to one Ca(1), one Ca(3), one Mo(2), and one As(1) atom. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to one Ca(2), one Ca(4), one Mo(1), and one As(2) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal non-coplanar geometry to one Ca(1), one Mo(4), and one As(3) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one Ca(2), one Ca(4), one Mo(3), and one As(4) atom. In the seventeenth O site, O(17) is bonded in a distorted trigonal non-coplanar geometry to one Ca(1), one Mo(1), and one Mo(4) atom. In the eighteenth O site, O(18) is bonded in a trigonal non-coplanar geometry to one Ca(2), one Mo(2), and one Mo(3) atom. In the nineteenth O site, O(19) is bonded in an L-shaped geometry to one Mo(2) and one Mo(3) atom. In the twentieth O site, O(20) is bonded in a distorted trigonal non-coplanar geometry to one Ca(4), one Mo(1), and one Mo(4) atom. is represented by the CIF file [CIF]
data_CaMoAsO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.144
_cell_length_b   8.261
_cell_length_c   9.455
_cell_angle_alpha   94.937
_cell_angle_beta   91.147
_cell_angle_gamma   97.106
_symmetry_Int_Tables_number   1
_cell_volume   474.274
_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
  Ca  Ca0  1  0.277  0.063  0.898  1.0
  Ca  Ca1  1  0.742  0.416  0.416  1.0
  Ca  Ca2  1  0.253  0.556  0.129  1.0
  Ca  Ca3  1  0.734  0.904  0.565  1.0
  Mo  Mo4  1  0.560  0.997  0.229  1.0
  Mo  Mo5  1  0.436  0.517  0.761  1.0
  Mo  Mo6  1  0.959  0.504  0.769  1.0
  Mo  Mo7  1  0.053  0.976  0.250  1.0
  As  As8  1  0.673  0.350  0.048  1.0
  As  As9  1  0.335  0.146  0.552  1.0
  As  As10  1  0.793  0.880  0.915  1.0
  As  As11  1  0.205  0.666  0.472  1.0
  O  O12  1  0.847  0.140  0.217  1.0
  O  O13  1  0.137  0.346  0.728  1.0
  O  O14  1  0.725  0.692  0.816  1.0
  O  O15  1  0.289  0.822  0.240  1.0
  O  O16  1  0.610  0.470  0.200  1.0
  O  O17  1  0.408  0.015  0.677  1.0
  O  O18  1  0.894  0.008  0.792  1.0
  O  O19  1  0.110  0.501  0.345  1.0
  O  O20  1  0.914  0.477  0.979  1.0
  O  O21  1  0.087  0.021  0.462  1.0
  O  O22  1  0.561  0.921  0.003  1.0
  O  O23  1  0.447  0.594  0.558  1.0
  O  O24  1  0.431  0.398  0.943  1.0
  O  O25  1  0.564  0.105  0.432  1.0
  O  O26  1  0.015  0.885  0.029  1.0
  O  O27  1  0.959  0.613  0.585  1.0
  O  O28  1  0.337  0.120  0.171  1.0
  O  O29  1  0.678  0.385  0.690  1.0
  O  O30  1  0.225  0.665  0.830  1.0
  O  O31  1  0.743  0.845  0.300  1.0
[/CIF]
.
The compound described by CaMoAsO5 crystallizes in the triclinic P1 space group. There are four inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 6-coordinate geometry to one O(11), one O(13), one O(15), one O(17), one O(6), and one O(7) atom. In the second Ca site, Ca(2) is bonded in a 7-coordinate geometry to one O(1), one O(12), one O(14), one O(16), one O(18), one O(5), and one O(8) atom. In the third Ca site, Ca(3) is bonded in a 5-coordinate geometry to one O(13), one O(4), one O(5), one O(8), and one O(9) atom. In the fourth Ca site, Ca(4) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(14), one O(16), one O(20), one O(6), and one O(7) atom. There are four inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to one O(1), one O(11), one O(14), one O(17), one O(20), and one O(4) atom to form MoO6 octahedra that share  a cornercorner with one As(3)O4 tetrahedra and edges with two equivalent Mo(4)O6 octahedra. In the second Mo site, Mo(2) is bonded to one O(12), one O(13), one O(18), one O(19), one O(2), and one O(3) atom to form MoO6 octahedra that share  a cornercorner with one As(3)O4 tetrahedra and edges with two equivalent Mo(3)O6 octahedra. In the third Mo site, Mo(3) is bonded to one O(16), one O(18), one O(19), one O(2), one O(3), and one O(9) atom to form distorted MoO6 octahedra that share  a cornercorner with one As(3)O4 tetrahedra and edges with two equivalent Mo(2)O6 octahedra. In the fourth Mo site, Mo(4) is bonded to one O(1), one O(10), one O(15), one O(17), one O(20), and one O(4) atom to form MoO6 octahedra that share  a cornercorner with one As(3)O4 tetrahedra and edges with two equivalent Mo(1)O6 octahedra. There are four inequivalent As sites. In the first As site, As(1) is bonded in a trigonal non-coplanar geometry to one O(13), one O(5), and one O(9) atom. In the second As site, As(2) is bonded in a distorted trigonal non-coplanar geometry to one O(10), one O(14), and one O(6) atom. In the third As site, As(3) is bonded to one O(11), one O(15), one O(3), and one O(7) atom to form AsO4 tetrahedra that share  a cornercorner with one Mo(1)O6 octahedra,  a cornercorner with one Mo(2)O6 octahedra,  a cornercorner with one Mo(3)O6 octahedra, and  a cornercorner with one Mo(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 41-57°. In the fourth As site, As(4) is bonded in a distorted trigonal non-coplanar geometry to one O(12), one O(16), and one O(8) atom. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a distorted water-like geometry to one Ca(2), one Mo(1), and one Mo(4) atom. In the second O site, O(2) is bonded in a distorted L-shaped geometry to one Mo(2) and one Mo(3) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mo(2), one Mo(3), and one As(3) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Ca(3), one Mo(1), and one Mo(4) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Ca(2), one Ca(3), and one As(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Ca(1), one Ca(4), and one As(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Ca(1), one Ca(4), and one As(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Ca(2), one Ca(3), and one As(4) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Ca(3), one Mo(3), and one As(1) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Ca(4), one Mo(4), and one As(2) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Ca(1), one Mo(1), and one As(3) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Ca(2), one Ca(4), one Mo(2), and one As(4) atom. In the thirteenth O site, O(13) is bonded in a distorted tetrahedral geometry to one Ca(1), one Ca(3), one Mo(2), and one As(1) atom. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to one Ca(2), one Ca(4), one Mo(1), and one As(2) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal non-coplanar geometry to one Ca(1), one Mo(4), and one As(3) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one Ca(2), one Ca(4), one Mo(3), and one As(4) atom. In the seventeenth O site, O(17) is bonded in a distorted trigonal non-coplanar geometry to one Ca(1), one Mo(1), and one Mo(4) atom. In the eighteenth O site, O(18) is bonded in a trigonal non-coplanar geometry to one Ca(2), one Mo(2), and one Mo(3) atom. In the nineteenth O site, O(19) is bonded in an L-shaped geometry to one Mo(2) and one Mo(3) atom. In the twentieth O site, O(20) is bonded in a distorted trigonal non-coplanar geometry to one Ca(4), one Mo(1), and one Mo(4) atom. is represented by the CIF file [CIF]
data_CaMoAsO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.144
_cell_length_b   8.261
_cell_length_c   9.455
_cell_angle_alpha   94.937
_cell_angle_beta   91.147
_cell_angle_gamma   97.106
_symmetry_Int_Tables_number   1
_cell_volume   474.274
_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
  Ca  Ca0  1  0.277  0.063  0.898  1.0
  Ca  Ca1  1  0.742  0.416  0.416  1.0
  Ca  Ca2  1  0.253  0.556  0.129  1.0
  Ca  Ca3  1  0.734  0.904  0.565  1.0
  Mo  Mo4  1  0.560  0.997  0.229  1.0
  Mo  Mo5  1  0.436  0.517  0.761  1.0
  Mo  Mo6  1  0.959  0.504  0.769  1.0
  Mo  Mo7  1  0.053  0.976  0.250  1.0
  As  As8  1  0.673  0.350  0.048  1.0
  As  As9  1  0.335  0.146  0.552  1.0
  As  As10  1  0.793  0.880  0.915  1.0
  As  As11  1  0.205  0.666  0.472  1.0
  O  O12  1  0.847  0.140  0.217  1.0
  O  O13  1  0.137  0.346  0.728  1.0
  O  O14  1  0.725  0.692  0.816  1.0
  O  O15  1  0.289  0.822  0.240  1.0
  O  O16  1  0.610  0.470  0.200  1.0
  O  O17  1  0.408  0.015  0.677  1.0
  O  O18  1  0.894  0.008  0.792  1.0
  O  O19  1  0.110  0.501  0.345  1.0
  O  O20  1  0.914  0.477  0.979  1.0
  O  O21  1  0.087  0.021  0.462  1.0
  O  O22  1  0.561  0.921  0.003  1.0
  O  O23  1  0.447  0.594  0.558  1.0
  O  O24  1  0.431  0.398  0.943  1.0
  O  O25  1  0.564  0.105  0.432  1.0
  O  O26  1  0.015  0.885  0.029  1.0
  O  O27  1  0.959  0.613  0.585  1.0
  O  O28  1  0.337  0.120  0.171  1.0
  O  O29  1  0.678  0.385  0.690  1.0
  O  O30  1  0.225  0.665  0.830  1.0
  O  O31  1  0.743  0.845  0.300  1.0
[/CIF]
.