SrV2(P2O7)2 crystallizes in the triclinic P-1 space group. Sr(1) is bonded to two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms to form distorted SrO6 octahedra that share corners with two equivalent V(2)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, corners with four equivalent P(2)O4 tetrahedra, and edges with two equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles are 64°. There are two inequivalent V sites. In the first V site, V(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form VO6 octahedra that share corners with two equivalent P(2)O4 tetrahedra, corners with four equivalent P(1)O4 tetrahedra, and edges with two equivalent Sr(1)O6 octahedra. In the second V site, V(2) is bonded to two equivalent O(1), two equivalent O(6), and two equivalent O(7) atoms to form VO6 octahedra that share corners with two equivalent Sr(1)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with four equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 64°. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one Sr(1)O6 octahedra,  a cornercorner with one V(2)O6 octahedra, corners with two equivalent V(1)O6 octahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 22-65°. In the second P site, P(2) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra, corners with two equivalent Sr(1)O6 octahedra, corners with two equivalent V(2)O6 octahedra, and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 31-63°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one V(2) and one P(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one V(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Sr(1), one V(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Sr(1), one V(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Sr(1), one V(2), and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one V(2) and one P(2) atom.
SrV2(P2O7)2 crystallizes in the triclinic P-1 space group. Sr(1) is bonded to two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms to form distorted SrO6 octahedra that share corners with two equivalent V(2)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, corners with four equivalent P(2)O4 tetrahedra, and edges with two equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles are 64°. Both Sr(1)-O(3) bond lengths are 2.50 Å. Both Sr(1)-O(5) bond lengths are 2.81 Å. Both Sr(1)-O(6) bond lengths are 2.60 Å. There are two inequivalent V sites. In the first V site, V(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form VO6 octahedra that share corners with two equivalent P(2)O4 tetrahedra, corners with four equivalent P(1)O4 tetrahedra, and edges with two equivalent Sr(1)O6 octahedra. Both V(1)-O(2) bond lengths are 1.98 Å. Both V(1)-O(3) bond lengths are 2.01 Å. Both V(1)-O(5) bond lengths are 2.15 Å. In the second V site, V(2) is bonded to two equivalent O(1), two equivalent O(6), and two equivalent O(7) atoms to form VO6 octahedra that share corners with two equivalent Sr(1)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with four equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 64°. Both V(2)-O(1) bond lengths are 2.01 Å. Both V(2)-O(6) bond lengths are 2.14 Å. Both V(2)-O(7) bond lengths are 1.98 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one Sr(1)O6 octahedra,  a cornercorner with one V(2)O6 octahedra, corners with two equivalent V(1)O6 octahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 22-65°. The P(1)-O(1) bond length is 1.51 Å. The P(1)-O(2) bond length is 1.52 Å. The P(1)-O(3) bond length is 1.56 Å. The P(1)-O(4) bond length is 1.60 Å. In the second P site, P(2) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one V(1)O6 octahedra, corners with two equivalent Sr(1)O6 octahedra, corners with two equivalent V(2)O6 octahedra, and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 31-63°. The P(2)-O(4) bond length is 1.62 Å. The P(2)-O(5) bond length is 1.56 Å. The P(2)-O(6) bond length is 1.54 Å. The P(2)-O(7) bond length is 1.51 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one V(2) and one P(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one V(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Sr(1), one V(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Sr(1), one V(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Sr(1), one V(2), and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one V(2) and one P(2) atom.