Krypton bis[pentafluoro-oxotellurate( VI )], Kr(OTeF 5 ) 2 , the first example of a Kr–O bond

Krypton bis[pentafluoro-oxotellurate(VI)] provides the first example of a species containing a krypton–oxygen bond and has been prepared by the reaction of KrF2 with natural abundance and 17O-enriched B(OTeF5)3 at –90 to –112 °C in SO2CIF solvent; characterization of the thermally unstable Kr(OTeF5)2 and its decomposition products has been achieved using 19F and 17O n.m.r. spectroscopy.