J. Nielsen, P. Zylka, M. Kronberg
Mar 15, 2017
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Influential Citations
3
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Journal
Journal of Molecular Structure
Abstract
Abstract Tris(pentafluorosulfanyl)amine, N(SF5)3, and the bis(pentafluorosulfanyl)aminyl radical, N(SF5)2, have been synthesized and characterized by gas electron diffraction, single crystal XRD, NMR, EPR, FT-IR, Raman, and UV–vis spectroscopy, and by their thermal decompositions. The amine possesses a planar molecular structure of D3 symmetry with an unusually long N S bond of 1.829(6) A. The long N S bonds are in accordance with the small Arrhenius activation barrier for the decay into N(SF5)2 and SF5 radicals of 6.9 kcal mol−1, and its half-life at room temperature is only 50 min. The aminyl radical possesses C2 symmetry with N S = 1.692(4) A and S N S = 135.1(5)°, and its structure is similar to that of FN(SF5)2. This radical is much more stable than the amine (half-life at room temperature is 130 min). Dimerization and formation of the corresponding hydrazine, (SF5)2NN(SF5)2, was not observed, nor was the nitrene:NSF5 or its isomer FN SF4.