(Fe4P2O8F9)2(N2)3 crystallizes in the monoclinic P2_1/m space group. The structure consists of six ammonia atoms inside a Fe4P2O8F9 framework. In the Fe4P2O8F9 framework, there are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(2), one O(3), one F(1), one F(2), one F(3), and one F(5) atom to form FeO2F4 octahedra that share  a cornercorner with one Fe(1)O2F4 octahedra,  a cornercorner with one Fe(2)O2F4 octahedra,  a cornercorner with one Fe(3)O2F4 octahedra, and corners with two equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 34-38°. In the second Fe site, Fe(2) is bonded to two equivalent O(1), one F(4), one F(6), and two equivalent F(5) atoms to form FeO2F4 octahedra that share corners with two equivalent Fe(1)O2F4 octahedra, corners with two equivalent Fe(3)O2F4 octahedra, and corners with two equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 37-46°. In the third Fe site, Fe(3) is bonded to two equivalent O(4), one F(4), one F(6), and two equivalent F(3) atoms to form FeO2F4 octahedra that share corners with two equivalent Fe(1)O2F4 octahedra, corners with two equivalent Fe(2)O2F4 octahedra, and corners with two equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 38-46°. 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(2)O2F4 octahedra,  a cornercorner with one Fe(3)O2F4 octahedra, and corners with two equivalent Fe(1)O2F4 octahedra. The corner-sharing octahedral tilt angles range from 38-46°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Fe(2) and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Fe(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Fe(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Fe(3) and one P(1) atom. There are six inequivalent F sites. In the first F site, F(1) is bonded in a single-bond geometry to one Fe(1) atom. In the second F site, F(2) is bonded in a bent 150 degrees geometry to two equivalent Fe(1) atoms. In the third F site, F(3) is bonded in a bent 150 degrees geometry to one Fe(1) and one Fe(3) atom. In the fourth F site, F(4) is bonded in a distorted bent 120 degrees geometry to one Fe(2) and one Fe(3) atom. In the fifth F site, F(5) is bonded in a bent 150 degrees geometry to one Fe(1) and one Fe(2) atom. In the sixth F site, F(6) is bonded in a bent 150 degrees geometry to one Fe(2) and one Fe(3) atom.
(Fe4P2O8F9)2(N2)3 crystallizes in the monoclinic P2_1/m space group. The structure consists of six ammonia atoms inside a Fe4P2O8F9 framework. In the Fe4P2O8F9 framework, there are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(2), one O(3), one F(1), one F(2), one F(3), and one F(5) atom to form FeO2F4 octahedra that share  a cornercorner with one Fe(1)O2F4 octahedra,  a cornercorner with one Fe(2)O2F4 octahedra,  a cornercorner with one Fe(3)O2F4 octahedra, and corners with two equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 34-38°. The Fe(1)-O(2) bond length is 2.03 Å. The Fe(1)-O(3) bond length is 2.02 Å. The Fe(1)-F(1) bond length is 1.83 Å. The Fe(1)-F(2) bond length is 1.97 Å. The Fe(1)-F(3) bond length is 2.00 Å. The Fe(1)-F(5) bond length is 1.99 Å. In the second Fe site, Fe(2) is bonded to two equivalent O(1), one F(4), one F(6), and two equivalent F(5) atoms to form FeO2F4 octahedra that share corners with two equivalent Fe(1)O2F4 octahedra, corners with two equivalent Fe(3)O2F4 octahedra, and corners with two equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 37-46°. Both Fe(2)-O(1) bond lengths are 2.01 Å. The Fe(2)-F(4) bond length is 1.97 Å. The Fe(2)-F(6) bond length is 1.95 Å. Both Fe(2)-F(5) bond lengths are 1.94 Å. In the third Fe site, Fe(3) is bonded to two equivalent O(4), one F(4), one F(6), and two equivalent F(3) atoms to form FeO2F4 octahedra that share corners with two equivalent Fe(1)O2F4 octahedra, corners with two equivalent Fe(2)O2F4 octahedra, and corners with two equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 38-46°. Both Fe(3)-O(4) bond lengths are 1.99 Å. The Fe(3)-F(4) bond length is 1.97 Å. The Fe(3)-F(6) bond length is 1.97 Å. Both Fe(3)-F(3) bond lengths are 1.95 Å. 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(2)O2F4 octahedra,  a cornercorner with one Fe(3)O2F4 octahedra, and corners with two equivalent Fe(1)O2F4 octahedra. The corner-sharing octahedral tilt angles range from 38-46°. The P(1)-O(1) bond length is 1.55 Å. The P(1)-O(2) bond length is 1.55 Å. The P(1)-O(3) bond length is 1.54 Å. The P(1)-O(4) bond length is 1.54 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Fe(2) and one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Fe(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Fe(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Fe(3) and one P(1) atom. There are six inequivalent F sites. In the first F site, F(1) is bonded in a single-bond geometry to one Fe(1) atom. In the second F site, F(2) is bonded in a bent 150 degrees geometry to two equivalent Fe(1) atoms. In the third F site, F(3) is bonded in a bent 150 degrees geometry to one Fe(1) and one Fe(3) atom. In the fourth F site, F(4) is bonded in a distorted bent 120 degrees geometry to one Fe(2) and one Fe(3) atom. In the fifth F site, F(5) is bonded in a bent 150 degrees geometry to one Fe(1) and one Fe(2) atom. In the sixth F site, F(6) is bonded in a bent 150 degrees geometry to one Fe(2) and one Fe(3) atom.