SrFeBP2(HO5)2 crystallizes in the triclinic P-1 space group. Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(2), two equivalent O(7), and two equivalent O(9) atoms to form FeO6 octahedra that share corners with two equivalent B(1)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. In the second Fe site, Fe(2) is bonded to two equivalent O(1), two equivalent O(10), and two equivalent O(6) atoms to form FeO6 octahedra that share corners with two equivalent B(1)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. B(1) is bonded to one O(10), one O(4), one O(8), and one O(9) atom to form BO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-54°. 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 Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, and  a cornercorner with one B(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 42-51°. In the second P site, P(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, and  a cornercorner with one B(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-52°. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(9) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(10) atom. There are ten inequivalent O sites. In the first O site, O(10) is bonded in a 3-coordinate geometry to one Fe(2), one B(1), and one H(2) atom. In the second O site, O(1) is bonded in a 3-coordinate geometry to one Sr(1), one Fe(2), and one P(1) atom. In the third O site, O(2) is bonded in a 3-coordinate geometry to one Sr(1), one Fe(1), and one P(1) atom. In the fourth O site, O(3) is bonded in a distorted single-bond geometry to one Sr(1) and one P(1) atom. In the fifth O site, O(4) is bonded in a 2-coordinate geometry to one Sr(1), one B(1), and one P(1) atom. In the sixth O site, O(5) is bonded in a distorted single-bond geometry to one Sr(1) and one P(2) atom. In the seventh O site, O(6) is bonded in a 2-coordinate geometry to one Sr(1), one Fe(2), and one P(2) atom. In the eighth O site, O(7) is bonded in a 3-coordinate geometry to one Sr(1), one Fe(1), and one P(2) atom. In the ninth O site, O(8) is bonded in a 2-coordinate geometry to one Sr(1), one B(1), and one P(2) atom. In the tenth O site, O(9) is bonded in a distorted trigonal planar geometry to one Fe(1), one B(1), and one H(1) atom.
SrFeBP2(HO5)2 crystallizes in the triclinic P-1 space group. Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. The Sr(1)-O(1) bond length is 2.58 Å. The Sr(1)-O(2) bond length is 2.72 Å. The Sr(1)-O(3) bond length is 2.59 Å. The Sr(1)-O(4) bond length is 2.60 Å. The Sr(1)-O(5) bond length is 2.59 Å. The Sr(1)-O(6) bond length is 2.82 Å. The Sr(1)-O(7) bond length is 2.59 Å. The Sr(1)-O(8) bond length is 2.57 Å. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(2), two equivalent O(7), and two equivalent O(9) atoms to form FeO6 octahedra that share corners with two equivalent B(1)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. Both Fe(1)-O(2) bond lengths are 2.00 Å. Both Fe(1)-O(7) bond lengths are 2.08 Å. Both Fe(1)-O(9) bond lengths are 2.05 Å. In the second Fe site, Fe(2) is bonded to two equivalent O(1), two equivalent O(10), and two equivalent O(6) atoms to form FeO6 octahedra that share corners with two equivalent B(1)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. Both Fe(2)-O(1) bond lengths are 2.03 Å. Both Fe(2)-O(10) bond lengths are 2.07 Å. Both Fe(2)-O(6) bond lengths are 2.04 Å. B(1) is bonded to one O(10), one O(4), one O(8), and one O(9) atom to form BO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-54°. The B(1)-O(10) bond length is 1.48 Å. The B(1)-O(4) bond length is 1.50 Å. The B(1)-O(8) bond length is 1.49 Å. The B(1)-O(9) bond length is 1.47 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 Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, and  a cornercorner with one B(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 42-51°. The P(1)-O(1) bond length is 1.56 Å. The P(1)-O(2) bond length is 1.56 Å. The P(1)-O(3) bond length is 1.51 Å. The P(1)-O(4) bond length is 1.59 Å. In the second P site, P(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, and  a cornercorner with one B(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-52°. The P(2)-O(5) bond length is 1.52 Å. The P(2)-O(6) bond length is 1.56 Å. The P(2)-O(7) bond length is 1.55 Å. The P(2)-O(8) bond length is 1.59 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(9) atom. The H(1)-O(9) bond length is 1.00 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(10) atom. The H(2)-O(10) bond length is 1.00 Å. There are ten inequivalent O sites. In the first O site, O(10) is bonded in a 3-coordinate geometry to one Fe(2), one B(1), and one H(2) atom. In the second O site, O(1) is bonded in a 3-coordinate geometry to one Sr(1), one Fe(2), and one P(1) atom. In the third O site, O(2) is bonded in a 3-coordinate geometry to one Sr(1), one Fe(1), and one P(1) atom. In the fourth O site, O(3) is bonded in a distorted single-bond geometry to one Sr(1) and one P(1) atom. In the fifth O site, O(4) is bonded in a 2-coordinate geometry to one Sr(1), one B(1), and one P(1) atom. In the sixth O site, O(5) is bonded in a distorted single-bond geometry to one Sr(1) and one P(2) atom. In the seventh O site, O(6) is bonded in a 2-coordinate geometry to one Sr(1), one Fe(2), and one P(2) atom. In the eighth O site, O(7) is bonded in a 3-coordinate geometry to one Sr(1), one Fe(1), and one P(2) atom. In the ninth O site, O(8) is bonded in a 2-coordinate geometry to one Sr(1), one B(1), and one P(2) atom. In the tenth O site, O(9) is bonded in a distorted trigonal planar geometry to one Fe(1), one B(1), and one H(1) atom.