Materials Data on Ni(H2N)2 by Materials Project
NiN2H4 crystallizes in the cubic Pm-3 space group. The structure is zero-dimensional and consists of three NiN2H4 clusters. there are two inequivalent Ni2+ sites. In the first Ni2+ site, Ni2+ is bonded in a rectangular see-saw-like geometry to four equivalent N3- atoms. All Ni–N bond lengths are 1.91 Å. In the second Ni2+ site, Ni2+ is bonded in a rectangular see-saw-like geometry to four N3- atoms. All Ni–N bond lengths are 1.92 Å. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded to two equivalent Ni2+ and two equivalent H1+ atoms to form distorted corner-sharing NNi2H2 tetrahedra. Both N–H bond lengths are 1.02 Å. In the second N3- site, N3- is bonded to two Ni2+ and two H1+ atoms to form distorted corner-sharing NNi2H2 tetrahedra. There is one shorter (1.02 Å) and one longer (1.03 Å) N–H bond length. In the third N3- site, N3- is bonded to two equivalent Ni2+ and two equivalent H1+ atoms to form distorted corner-sharing NNi2H2 tetrahedra. Both N–H bond lengths are 1.02 Å. There are four 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.