Materials Data on H5N2F by Materials Project
NH2NH3F crystallizes in the orthorhombic P2_12_12_1 space group. The structure is one-dimensional and consists of eight ammonia molecules and four NH3F ribbons oriented in the (1, 0, 0) direction. In each NH3F ribbon, there are two inequivalent N2- sites. In the first N2- site, N2- is bonded in a trigonal non-coplanar geometry to three H1+ atoms. There is one shorter (1.06 Å) and two longer (1.07 Å) N–H bond length. In the second N2- site, N2- is bonded in a trigonal non-coplanar geometry to three H1+ atoms. All N–H bond lengths are 1.06 Å. There are six inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N2- and one F1- atom. The H–F bond length is 1.64 Å. In the fourth H1+ site, H1+ is bonded in a distorted single-bond geometry to one N2- and one F1- atom. The H–F bond length is 1.58 Å. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one N2- and one F1- atom. The H–F bond length is 1.64 Å. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one N2- and one F1- atom. The H–F bond length is 1.66 Å. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a 3-coordinate geometry to three H1+ atoms. In the second F1- site, F1- is bonded in a single-bond geometry to one H1+ atom.