XeOFmath image, an Anion with Pentagonal-Pyramidal Structure


  • This work was supported by the Deutsche Forschungsgemeinschaft and the Fonds der Chemischen Industrie. We thank the Alexander von Humboldt Foundation for scholarship for A. E.


original image

Only minimally distorted by interionic forces in the crystal, the ion XeOFmath image (picture on the right, bond lengths in pm) can be crystallized as NO+XeOFmath image. The xenon atom is situated only slightly above the plane through the fluorine atoms, and the doubly bonded oxygen atom occupies the apical position of the pentagonal pyramid. NO+XeOFmath image is formed directly by treatment of NOF with an equimolar amount of XeOF4 and crystallizes spontaneously from the liquid phase.