NH4F crystallizes in the hexagonal P6_3mc space group. N(1) is bonded to one H(2) and three equivalent H(1) atoms to form NH4 tetrahedra that share corners with four equivalent F(1)H4 tetrahedra. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(1) and one F(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one N(1) and one F(1) atom. F(1) is bonded to one H(2) and three equivalent H(1) atoms to form distorted FH4 tetrahedra that share corners with four equivalent N(1)H4 tetrahedra.
NH4F crystallizes in the hexagonal P6_3mc space group. N(1) is bonded to one H(2) and three equivalent H(1) atoms to form NH4 tetrahedra that share corners with four equivalent F(1)H4 tetrahedra. The N(1)-H(2) bond length is 1.04 Å. All N(1)-H(1) bond lengths are 1.04 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(1) and one F(1) atom. The H(1)-F(1) bond length is 1.65 Å. In the second H site, H(2) is bonded in a single-bond geometry to one N(1) and one F(1) atom. The H(2)-F(1) bond length is 1.65 Å. F(1) is bonded to one H(2) and three equivalent H(1) atoms to form distorted FH4 tetrahedra that share corners with four equivalent N(1)H4 tetrahedra.