The crystal structure of (C6F5S)3N has been examd. The compds. (C6F5S)2NX, X = SiMe3 and 1/2 Hg have been prepd. from (C6F5S)2NH and characterized. In a no. of other reactions, such as oxidn. and irradn., the S-N bond in (C6F5S)2NH was readily fractured, forming the disulfide, (C6F5S)2. The compd. (C6F5S)3N has been found to be unreactive. Details of the mass of 13C NMR spectra of (C6F5S)nNH3-n, n = 1, 2, 3 are reported.