NpPO4F crystallizes in the orthorhombic Pnma space group. Np(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), four equivalent O(2), and two equivalent F(1) atoms. P(1) is bonded in a tetrahedral geometry to one O(1), one O(3), and two equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Np(1) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Np(1) and one P(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Np(1) and one P(1) atom. F(1) is bonded in a bent 150 degrees geometry to two equivalent Np(1) atoms.
NpPO4F crystallizes in the orthorhombic Pnma space group. Np(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), four equivalent O(2), and two equivalent F(1) atoms. The Np(1)-O(1) bond length is 2.24 Å. The Np(1)-O(3) bond length is 2.23 Å. There are two shorter (2.29 Å) and two longer (2.65 Å) Np(1)-O(2) bond lengths. Both Np(1)-F(1) bond lengths are 2.29 Å. P(1) is bonded in a tetrahedral geometry to one O(1), one O(3), and two equivalent O(2) atoms. The P(1)-O(1) bond length is 1.53 Å. The P(1)-O(3) bond length is 1.53 Å. Both P(1)-O(2) bond lengths are 1.57 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Np(1) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Np(1) and one P(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Np(1) and one P(1) atom. F(1) is bonded in a bent 150 degrees geometry to two equivalent Np(1) atoms.