BaVCu4P4O17 crystallizes in the tetragonal P42_12 space group. Ba(1) is bonded in a distorted body-centered cubic geometry to four equivalent O(2) and four equivalent O(4) atoms. V(1) is bonded to one O(1) and four equivalent O(3) atoms to form distorted VO5 trigonal bipyramids that share corners with four equivalent P(1)O4 tetrahedra. Cu(1) is bonded in a rectangular see-saw-like geometry to one O(2), one O(4), and two equivalent O(5) atoms. P(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one V(1)O5 trigonal bipyramid. There are five inequivalent O sites. In the first O site, O(5) is bonded in a trigonal planar geometry to two equivalent Cu(1) and one P(1) atom. In the second O site, O(1) is bonded in a single-bond geometry to one V(1) atom. In the third O site, O(2) is bonded in a distorted trigonal planar geometry to one Ba(1), one Cu(1), and one P(1) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one V(1) and one P(1) atom. In the fifth O site, O(4) is bonded in a 2-coordinate geometry to one Ba(1), one Cu(1), and one P(1) atom.
BaVCu4P4O17 crystallizes in the tetragonal P42_12 space group. Ba(1) is bonded in a distorted body-centered cubic geometry to four equivalent O(2) and four equivalent O(4) atoms. All Ba(1)-O(2) bond lengths are 2.77 Å. All Ba(1)-O(4) bond lengths are 2.92 Å. V(1) is bonded to one O(1) and four equivalent O(3) atoms to form distorted VO5 trigonal bipyramids that share corners with four equivalent P(1)O4 tetrahedra. The V(1)-O(1) bond length is 1.64 Å. All V(1)-O(3) bond lengths are 1.90 Å. Cu(1) is bonded in a rectangular see-saw-like geometry to one O(2), one O(4), and two equivalent O(5) atoms. The Cu(1)-O(2) bond length is 1.97 Å. The Cu(1)-O(4) bond length is 2.00 Å. Both Cu(1)-O(5) bond lengths are 2.00 Å. P(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one V(1)O5 trigonal bipyramid. The P(1)-O(2) bond length is 1.54 Å. The P(1)-O(3) bond length is 1.57 Å. The P(1)-O(4) bond length is 1.54 Å. The P(1)-O(5) bond length is 1.57 Å. There are five inequivalent O sites. In the first O site, O(5) is bonded in a trigonal planar geometry to two equivalent Cu(1) and one P(1) atom. In the second O site, O(1) is bonded in a single-bond geometry to one V(1) atom. In the third O site, O(2) is bonded in a distorted trigonal planar geometry to one Ba(1), one Cu(1), and one P(1) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one V(1) and one P(1) atom. In the fifth O site, O(4) is bonded in a 2-coordinate geometry to one Ba(1), one Cu(1), and one P(1) atom.