The crystal structure described by MgV4Cu3O14 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(12), one O(2), one O(4), one O(6), and one O(8) atom to form MgO5 trigonal bipyramids that share  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one V(3)O4 tetrahedra,  a cornercorner with one V(4)O4 tetrahedra, corners with two equivalent V(1)O4 tetrahedra, and edges with two equivalent Cu(2)O5 trigonal bipyramids. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(12), one O(2), one O(5), and one O(9) atom to form VO4 tetrahedra that share  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(2)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid, and corners with two equivalent Mg(1)O5 trigonal bipyramids. In the second V site, V(2) is bonded to one O(1), one O(11), one O(6), and one O(9) atom to form VO4 tetrahedra that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid,  a cornercorner with one Cu(2)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid, and corners with two equivalent Cu(1)O5 trigonal bipyramids. In the third V site, V(3) is bonded to one O(10), one O(14), one O(4), and one O(7) atom to form VO4 tetrahedra that share  a cornercorner with one V(4)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid, and corners with two equivalent Cu(2)O5 trigonal bipyramids. In the fourth V site, V(4) is bonded to one O(10), one O(13), one O(3), and one O(8) atom to form VO4 tetrahedra that share  a cornercorner with one V(3)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(2)O5 trigonal bipyramid, and corners with two equivalent Cu(3)O5 trigonal bipyramids. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(11), one O(3), one O(5), and one O(7) atom to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one V(3)O4 tetrahedra,  a cornercorner with one V(4)O4 tetrahedra, corners with two equivalent V(2)O4 tetrahedra, and edges with two equivalent Cu(3)O5 trigonal bipyramids. In the second Cu site, Cu(2) is bonded to one O(14), one O(2), one O(4), one O(6), and one O(8) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one V(4)O4 tetrahedra, corners with two equivalent V(3)O4 tetrahedra, and edges with two equivalent Mg(1)O5 trigonal bipyramids. In the third Cu site, Cu(3) is bonded to one O(1), one O(13), one O(3), one O(5), and one O(7) atom to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one V(3)O4 tetrahedra, corners with two equivalent V(4)O4 tetrahedra, and edges with two equivalent Cu(1)O5 trigonal bipyramids. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one V(2), one Cu(1), and one Cu(3) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(1), and one Cu(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one V(4), one Cu(1), and one Cu(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mg(1), one V(3), and one Cu(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one V(1), one Cu(1), and one Cu(3) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(2), and one Cu(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one V(3), one Cu(1), and one Cu(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(4), and one Cu(2) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one V(1) and one V(2) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one V(3) and one V(4) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one V(2) and one Cu(1) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Mg(1) and one V(1) atom. In the thirteenth O site, O(13) is bonded in a bent 150 degrees geometry to one V(4) and one Cu(3) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one V(3) and one Cu(2) atom. is represented by the CIF card [CIF]
data_MgV4Cu3O14
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.634
_cell_length_b   5.689
_cell_length_c   10.265
_cell_angle_alpha   104.015
_cell_angle_beta   103.423
_cell_angle_gamma   92.208
_symmetry_Int_Tables_number   1
_cell_volume   308.946
_cell_formula_units_Z   1
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
  Mg  Mg0  1  0.911  0.762  0.022  1.0
  V  V1  1  0.493  0.049  0.212  1.0
  V  V2  1  0.952  0.497  0.289  1.0
  V  V3  1  0.499  0.953  0.786  1.0
  V  V4  1  0.050  0.497  0.712  1.0
  Cu  Cu5  1  0.269  0.123  0.488  1.0
  Cu  Cu6  1  0.116  0.265  0.986  1.0
  Cu  Cu7  1  0.737  0.877  0.513  1.0
  O  O8  1  0.961  0.785  0.396  1.0
  O  O9  1  0.200  0.028  0.101  1.0
  O  O10  1  0.039  0.210  0.602  1.0
  O  O11  1  0.784  0.973  0.893  1.0
  O  O12  1  0.489  0.983  0.372  1.0
  O  O13  1  0.026  0.510  0.132  1.0
  O  O14  1  0.511  0.014  0.625  1.0
  O  O15  1  0.979  0.484  0.870  1.0
  O  O16  1  0.642  0.350  0.248  1.0
  O  O17  1  0.357  0.646  0.752  1.0
  O  O18  1  0.148  0.330  0.371  1.0
  O  O19  1  0.658  0.849  0.131  1.0
  O  O20  1  0.853  0.665  0.631  1.0
  O  O21  1  0.330  0.150  0.869  1.0
[/CIF]
.
The crystal structure described by MgV4Cu3O14 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(12), one O(2), one O(4), one O(6), and one O(8) atom to form MgO5 trigonal bipyramids that share  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one V(3)O4 tetrahedra,  a cornercorner with one V(4)O4 tetrahedra, corners with two equivalent V(1)O4 tetrahedra, and edges with two equivalent Cu(2)O5 trigonal bipyramids. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(12), one O(2), one O(5), and one O(9) atom to form VO4 tetrahedra that share  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(2)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid, and corners with two equivalent Mg(1)O5 trigonal bipyramids. In the second V site, V(2) is bonded to one O(1), one O(11), one O(6), and one O(9) atom to form VO4 tetrahedra that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid,  a cornercorner with one Cu(2)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid, and corners with two equivalent Cu(1)O5 trigonal bipyramids. In the third V site, V(3) is bonded to one O(10), one O(14), one O(4), and one O(7) atom to form VO4 tetrahedra that share  a cornercorner with one V(4)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid, and corners with two equivalent Cu(2)O5 trigonal bipyramids. In the fourth V site, V(4) is bonded to one O(10), one O(13), one O(3), and one O(8) atom to form VO4 tetrahedra that share  a cornercorner with one V(3)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(2)O5 trigonal bipyramid, and corners with two equivalent Cu(3)O5 trigonal bipyramids. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(11), one O(3), one O(5), and one O(7) atom to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one V(3)O4 tetrahedra,  a cornercorner with one V(4)O4 tetrahedra, corners with two equivalent V(2)O4 tetrahedra, and edges with two equivalent Cu(3)O5 trigonal bipyramids. In the second Cu site, Cu(2) is bonded to one O(14), one O(2), one O(4), one O(6), and one O(8) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one V(4)O4 tetrahedra, corners with two equivalent V(3)O4 tetrahedra, and edges with two equivalent Mg(1)O5 trigonal bipyramids. In the third Cu site, Cu(3) is bonded to one O(1), one O(13), one O(3), one O(5), and one O(7) atom to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one V(1)O4 tetrahedra,  a cornercorner with one V(2)O4 tetrahedra,  a cornercorner with one V(3)O4 tetrahedra, corners with two equivalent V(4)O4 tetrahedra, and edges with two equivalent Cu(1)O5 trigonal bipyramids. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one V(2), one Cu(1), and one Cu(3) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(1), and one Cu(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one V(4), one Cu(1), and one Cu(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mg(1), one V(3), and one Cu(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one V(1), one Cu(1), and one Cu(3) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(2), and one Cu(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one V(3), one Cu(1), and one Cu(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(4), and one Cu(2) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one V(1) and one V(2) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one V(3) and one V(4) atom. In the eleventh O site, O(11) is bonded in a bent 150 degrees geometry to one V(2) and one Cu(1) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Mg(1) and one V(1) atom. In the thirteenth O site, O(13) is bonded in a bent 150 degrees geometry to one V(4) and one Cu(3) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one V(3) and one Cu(2) atom. is represented by the CIF card [CIF]
data_MgV4Cu3O14
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.634
_cell_length_b   5.689
_cell_length_c   10.265
_cell_angle_alpha   104.015
_cell_angle_beta   103.423
_cell_angle_gamma   92.208
_symmetry_Int_Tables_number   1
_cell_volume   308.946
_cell_formula_units_Z   1
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
  Mg  Mg0  1  0.911  0.762  0.022  1.0
  V  V1  1  0.493  0.049  0.212  1.0
  V  V2  1  0.952  0.497  0.289  1.0
  V  V3  1  0.499  0.953  0.786  1.0
  V  V4  1  0.050  0.497  0.712  1.0
  Cu  Cu5  1  0.269  0.123  0.488  1.0
  Cu  Cu6  1  0.116  0.265  0.986  1.0
  Cu  Cu7  1  0.737  0.877  0.513  1.0
  O  O8  1  0.961  0.785  0.396  1.0
  O  O9  1  0.200  0.028  0.101  1.0
  O  O10  1  0.039  0.210  0.602  1.0
  O  O11  1  0.784  0.973  0.893  1.0
  O  O12  1  0.489  0.983  0.372  1.0
  O  O13  1  0.026  0.510  0.132  1.0
  O  O14  1  0.511  0.014  0.625  1.0
  O  O15  1  0.979  0.484  0.870  1.0
  O  O16  1  0.642  0.350  0.248  1.0
  O  O17  1  0.357  0.646  0.752  1.0
  O  O18  1  0.148  0.330  0.371  1.0
  O  O19  1  0.658  0.849  0.131  1.0
  O  O20  1  0.853  0.665  0.631  1.0
  O  O21  1  0.330  0.150  0.869  1.0
[/CIF]
.