The material structure described by KCu4(PO4)3 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 9-coordinate geometry to one O(11), one O(2), one O(3), one O(6), one O(7), two equivalent O(10), and two equivalent O(4) atoms. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(4), one O(5), one O(9), and two equivalent O(2) atoms to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra,  an edgeedge with one Cu(3)O5 square pyramid, and  an edgeedge with one Cu(1)O5 trigonal bipyramid. In the second Cu site, Cu(2) is bonded to one O(1), one O(10), one O(3), one O(6), and one O(7) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(3)O5 square pyramid,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and  an edgeedge with one Cu(4)O5 trigonal bipyramid. In the third Cu site, Cu(3) is bonded to one O(1), one O(5), one O(9), and two equivalent O(8) atoms to form distorted CuO5 square pyramids that share  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra,  a cornercorner with one Cu(2)O5 trigonal bipyramid,  an edgeedge with one Cu(3)O5 square pyramid, and  an edgeedge with one Cu(1)O5 trigonal bipyramid. In the fourth Cu site, Cu(4) is bonded to one O(11), one O(3), one O(7), and two equivalent O(12) atoms to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra,  an edgeedge with one Cu(2)O5 trigonal bipyramid, and  an edgeedge with one Cu(4)O5 trigonal bipyramid. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(3), one O(6), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Cu(3)O5 square pyramid,  a cornercorner with one Cu(1)O5 trigonal bipyramid, corners with two equivalent Cu(2)O5 trigonal bipyramids, and corners with two equivalent Cu(4)O5 trigonal bipyramids. In the second P site, P(2) is bonded to one O(10), one O(12), one O(2), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Cu(3)O5 square pyramids,  a cornercorner with one Cu(2)O5 trigonal bipyramid, corners with two equivalent Cu(1)O5 trigonal bipyramids, and corners with two equivalent Cu(4)O5 trigonal bipyramids. In the third P site, P(3) is bonded to one O(1), one O(4), one O(5), and one O(7) atom to form PO4 tetrahedra that share corners with two equivalent Cu(3)O5 square pyramids,  a cornercorner with one Cu(4)O5 trigonal bipyramid, corners with two equivalent Cu(1)O5 trigonal bipyramids, and corners with two equivalent Cu(2)O5 trigonal bipyramids. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cu(2), one Cu(3), and one P(3) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one K(1), two equivalent Cu(1), and one P(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one Cu(2), one Cu(4), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to two equivalent K(1), one Cu(1), and one P(3) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Cu(1), one Cu(3), and one P(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one K(1), one Cu(2), and one P(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one K(1), one Cu(2), one Cu(4), and one P(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to two equivalent Cu(3) and one P(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(3), and one P(1) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to two equivalent K(1), one Cu(2), and one P(2) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one K(1), one Cu(4), and one P(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to two equivalent Cu(4) and one P(2) atom. is represented by the CIF card [CIF]
data_KCu4(PO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.533
_cell_length_b   7.925
_cell_length_c   9.612
_cell_angle_alpha   108.128
_cell_angle_beta   112.776
_cell_angle_gamma   92.327
_symmetry_Int_Tables_number   1
_cell_volume   494.241
_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
  K  K0  1  0.694  0.864  0.672  1.0
  K  K1  1  0.306  0.136  0.328  1.0
  Cu  Cu2  1  0.735  0.100  0.100  1.0
  Cu  Cu3  1  0.694  0.382  0.714  1.0
  Cu  Cu4  1  0.265  0.900  0.900  1.0
  Cu  Cu5  1  0.306  0.618  0.286  1.0
  Cu  Cu6  1  0.736  0.468  0.077  1.0
  Cu  Cu7  1  0.264  0.532  0.923  1.0
  Cu  Cu8  1  0.023  0.791  0.454  1.0
  Cu  Cu9  1  0.977  0.209  0.546  1.0
  P  P10  1  0.299  0.552  0.614  1.0
  P  P11  1  0.383  0.148  0.749  1.0
  P  P12  1  0.701  0.448  0.386  1.0
  P  P13  1  0.979  0.749  0.056  1.0
  P  P14  1  0.021  0.251  0.944  1.0
  P  P15  1  0.617  0.852  0.251  1.0
  O  O16  1  0.818  0.576  0.948  1.0
  O  O17  1  0.551  0.983  0.155  1.0
  O  O18  1  0.250  0.676  0.510  1.0
  O  O19  1  0.895  0.920  0.063  1.0
  O  O20  1  0.182  0.424  0.052  1.0
  O  O21  1  0.133  0.745  0.983  1.0
  O  O22  1  0.449  0.017  0.845  1.0
  O  O23  1  0.515  0.539  0.656  1.0
  O  O24  1  0.083  0.741  0.230  1.0
  O  O25  1  0.405  0.339  0.866  1.0
  O  O26  1  0.269  0.648  0.772  1.0
  O  O27  1  0.867  0.255  0.017  1.0
  O  O28  1  0.513  0.152  0.658  1.0
  O  O29  1  0.838  0.634  0.480  1.0
  O  O30  1  0.731  0.352  0.228  1.0
  O  O31  1  0.834  0.937  0.377  1.0
  O  O32  1  0.105  0.080  0.937  1.0
  O  O33  1  0.917  0.259  0.770  1.0
  O  O34  1  0.162  0.366  0.520  1.0
  O  O35  1  0.595  0.661  0.134  1.0
  O  O36  1  0.750  0.324  0.490  1.0
  O  O37  1  0.487  0.848  0.342  1.0
  O  O38  1  0.485  0.461  0.344  1.0
  O  O39  1  0.166  0.063  0.623  1.0
[/CIF]
.
The material structure described by KCu4(PO4)3 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 9-coordinate geometry to one O(11), one O(2), one O(3), one O(6), one O(7), two equivalent O(10), and two equivalent O(4) atoms. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(4), one O(5), one O(9), and two equivalent O(2) atoms to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra,  an edgeedge with one Cu(3)O5 square pyramid, and  an edgeedge with one Cu(1)O5 trigonal bipyramid. In the second Cu site, Cu(2) is bonded to one O(1), one O(10), one O(3), one O(6), and one O(7) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(3)O5 square pyramid,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and  an edgeedge with one Cu(4)O5 trigonal bipyramid. In the third Cu site, Cu(3) is bonded to one O(1), one O(5), one O(9), and two equivalent O(8) atoms to form distorted CuO5 square pyramids that share  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra,  a cornercorner with one Cu(2)O5 trigonal bipyramid,  an edgeedge with one Cu(3)O5 square pyramid, and  an edgeedge with one Cu(1)O5 trigonal bipyramid. In the fourth Cu site, Cu(4) is bonded to one O(11), one O(3), one O(7), and two equivalent O(12) atoms to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra,  an edgeedge with one Cu(2)O5 trigonal bipyramid, and  an edgeedge with one Cu(4)O5 trigonal bipyramid. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(3), one O(6), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Cu(3)O5 square pyramid,  a cornercorner with one Cu(1)O5 trigonal bipyramid, corners with two equivalent Cu(2)O5 trigonal bipyramids, and corners with two equivalent Cu(4)O5 trigonal bipyramids. In the second P site, P(2) is bonded to one O(10), one O(12), one O(2), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Cu(3)O5 square pyramids,  a cornercorner with one Cu(2)O5 trigonal bipyramid, corners with two equivalent Cu(1)O5 trigonal bipyramids, and corners with two equivalent Cu(4)O5 trigonal bipyramids. In the third P site, P(3) is bonded to one O(1), one O(4), one O(5), and one O(7) atom to form PO4 tetrahedra that share corners with two equivalent Cu(3)O5 square pyramids,  a cornercorner with one Cu(4)O5 trigonal bipyramid, corners with two equivalent Cu(1)O5 trigonal bipyramids, and corners with two equivalent Cu(2)O5 trigonal bipyramids. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cu(2), one Cu(3), and one P(3) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one K(1), two equivalent Cu(1), and one P(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one Cu(2), one Cu(4), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to two equivalent K(1), one Cu(1), and one P(3) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Cu(1), one Cu(3), and one P(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one K(1), one Cu(2), and one P(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one K(1), one Cu(2), one Cu(4), and one P(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to two equivalent Cu(3) and one P(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(3), and one P(1) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to two equivalent K(1), one Cu(2), and one P(2) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one K(1), one Cu(4), and one P(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to two equivalent Cu(4) and one P(2) atom. is represented by the CIF card [CIF]
data_KCu4(PO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.533
_cell_length_b   7.925
_cell_length_c   9.612
_cell_angle_alpha   108.128
_cell_angle_beta   112.776
_cell_angle_gamma   92.327
_symmetry_Int_Tables_number   1
_cell_volume   494.241
_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
  K  K0  1  0.694  0.864  0.672  1.0
  K  K1  1  0.306  0.136  0.328  1.0
  Cu  Cu2  1  0.735  0.100  0.100  1.0
  Cu  Cu3  1  0.694  0.382  0.714  1.0
  Cu  Cu4  1  0.265  0.900  0.900  1.0
  Cu  Cu5  1  0.306  0.618  0.286  1.0
  Cu  Cu6  1  0.736  0.468  0.077  1.0
  Cu  Cu7  1  0.264  0.532  0.923  1.0
  Cu  Cu8  1  0.023  0.791  0.454  1.0
  Cu  Cu9  1  0.977  0.209  0.546  1.0
  P  P10  1  0.299  0.552  0.614  1.0
  P  P11  1  0.383  0.148  0.749  1.0
  P  P12  1  0.701  0.448  0.386  1.0
  P  P13  1  0.979  0.749  0.056  1.0
  P  P14  1  0.021  0.251  0.944  1.0
  P  P15  1  0.617  0.852  0.251  1.0
  O  O16  1  0.818  0.576  0.948  1.0
  O  O17  1  0.551  0.983  0.155  1.0
  O  O18  1  0.250  0.676  0.510  1.0
  O  O19  1  0.895  0.920  0.063  1.0
  O  O20  1  0.182  0.424  0.052  1.0
  O  O21  1  0.133  0.745  0.983  1.0
  O  O22  1  0.449  0.017  0.845  1.0
  O  O23  1  0.515  0.539  0.656  1.0
  O  O24  1  0.083  0.741  0.230  1.0
  O  O25  1  0.405  0.339  0.866  1.0
  O  O26  1  0.269  0.648  0.772  1.0
  O  O27  1  0.867  0.255  0.017  1.0
  O  O28  1  0.513  0.152  0.658  1.0
  O  O29  1  0.838  0.634  0.480  1.0
  O  O30  1  0.731  0.352  0.228  1.0
  O  O31  1  0.834  0.937  0.377  1.0
  O  O32  1  0.105  0.080  0.937  1.0
  O  O33  1  0.917  0.259  0.770  1.0
  O  O34  1  0.162  0.366  0.520  1.0
  O  O35  1  0.595  0.661  0.134  1.0
  O  O36  1  0.750  0.324  0.490  1.0
  O  O37  1  0.487  0.848  0.342  1.0
  O  O38  1  0.485  0.461  0.344  1.0
  O  O39  1  0.166  0.063  0.623  1.0
[/CIF]
.