79593-52-5Relevant academic research and scientific papers
Novel sulfur-nitrogen-fluorine compounds. Synthesis and properties of SF5NClF, SF5NHF, and FN=SF4 and the molecular structure and vibrational analysis of FN=SF4
DesMarteau, Darryl D.,Eysel, Hans H.,Oberhammer, Heinz,Günther, Horst
, p. 1607 - 1616 (2008/10/08)
Pentafluoro(fluorochloroamido)sulfur, SF5NFCl, can be synthesized from NSF3 by low-temperature reaction with ClF, followed by reaction with fluorine. Reduction of SF5NClF with mercury in trifluoroacetic acid forms (fluoroimido)pentafluorosulfur, SF5NHF, in high yield. Dehydrofluorination of SF5NFH with KF results in (fluoroimido)tetrafluorosulfur, FN=SF4. The imine is an unusual pentacoordinate molecule which does not undergo positional exchange of the sulfur fluorines according to 19F NMR. A complete vibrational analysis of FN=SF4 based on Cs symmetry has been carried out and found to be in good agreement with the related molecules OSF4, CH2=SF4, and SF4. The gas-phase structure was determined by joint analysis of electron diffraction and microwave spectroscopic data. The structure contains a relatively long S=N bond, short N-F bond, and a large difference in the nonequivalent axial S-F bonds.
