Materials Data on KB(CN)4 by Materials Project
K(CN)4B crystallizes in the tetragonal I4_1/a space group. The structure is three-dimensional and consists of four boron molecules and one K(CN)4 framework. In the K(CN)4 framework, K1+ is bonded in a distorted body-centered cubic geometry to eight equivalent N3- atoms. There are four shorter (2.95 Å) and four longer (3.24 Å) K–N bond lengths. C2+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.17 Å. N3- is bonded in a 1-coordinate geometry to two equivalent K1+ and one C2+ atom.
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