Adducts of (C6F5)3B with Selected Nitrogen

The Lewis acid (C6F5)3B was reacted with ICN, NH2CN, C3N3X3 (X = H, Cl, F). The resulting Lewis acid base adducts (1—5) were fully characterized by analytic and spectroscopic methods. Additionally, the structures of the adducts 1—4 were determined by single crystal X-ray analyses. It has been qualitatively shown, that a high field shift of the 11B as well as the 19F NMR resonances of the o-F atoms of the C6F5-substituents suggests a longer B—N distance.