Abstract New pentafluorobenzylborazines have been prepared by reacting (a) C 6 F 5 CN with B 2 H 6,(b) C 6 F 5 CH 2 NH 3 Cl with BCl 3 and (c) B-halogenoborazine derivatives with C 6 F 5 CH 2 MgBr. New N-β-trifluoroorganoborazines are described. Some of these compounds show good hydrolytic stability. The IR-spectra are discussed.