Die Pentafluoro-orthoselen- und -orthotellurgruppe,eine 19F-Kernresonanzuntersuchung

A ¹⁹F-NMR Study of the (Pentafluoro)orthoselenium and -tellurium Group In ¹⁹F-nmr the (pentafluoro)orthoselenium and (pentafluoro)orthotellurium groups show characteristic AB₄ spectra. Chemical shifts give information about the different bondings. The axial fluori ne atom is often more influenced, a certain trans effect may be discussed. The values of is otopic splittings, coming from ⁷⁷Se agree with these observations, isotopic splittings from ¹²³Te und ¹²⁵Te are much less important. Comparison is done with selected compounds containing a (pentafluoro)orthosulphur group.