DOE OSTI2019
(Cu(NH3)2)2(Cu(NH3)3)2N2(NH3)2(F2)2 crystallizes in the monoclinic C2 space group. The structure is zero-dimensional and consists of four ammonia molecules, four ammonia molecules, eight hydrofluoric acid molecules, four Cu(NH3)2 clusters, and four Cu(NH3)3 clusters. In two of the Cu(NH3)2 clusters, Cu+2.50+ is bonded in a linear geometry to two equivalent N3- atoms. Both Cu–N bond lengths are 1.89 Å. N3- is bonded to one Cu+2.50+ and three H1+ atoms to form distorted corner-sharing NCuH3 tetrahedra. All N–H bond lengths are 1.04 Å. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In two of the Cu(NH3)2 clusters, Cu+2.50+ is bonded in a linear geometry to two equivalent N3- atoms. Both Cu–N bond lengths are 1.89 Å. N3- is bonded to one Cu+2.50+ and three H1+ atoms to form distorted corner-sharing NCuH3 tetrahedra. All N–H bond lengths are 1.04 Å. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In each Cu(NH3)3 cluster, Cu+2.50+ is bonded in a distorted T-shaped geometry to three N3- atoms. There are two shorter (1.94 Å) and one longer (2.14 Å) Cu–N bond lengths. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded to one Cu+2.50+ and three H1+ atoms to form distorted corner-sharing NCuH3 tetrahedra. There is one shorter (1.03 Å) and two longer (1.04 Å) N–H bond length. In the second N3- site, N3- is bonded to one Cu+2.50+ and three H1+ atoms to form distorted corner-sharing NCuH3 tetrahedra. There is one shorter (1.03 Å) and two longer (1.04 Å) N–H bond length. In the third N3- site, N3- is bonded in a distorted trigonal non-coplanar geometry to one Cu+2.50+ and three H1+ atoms. There is one shorter (1.02 Å) and two longer (1.03 Å) N–H bond length. There are nine inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom.