“…Tn general, the isolation and crystallization (purification) of -S,N, heterocycles from the diphosphines are more tedious and time consuming in comparison to those ones from the reactions of (mono) phosphines 16 -131 of the type R,P or Ph,PR. In addition to this, even in solid phase, the trisulfurtrinitrides obtained from these reactions undergo decomposition [21] to the aminophosphonium compounds much faster in comparison to R,PN--S3N, [lo, 121 or Ph,(R)PN-S,N, derivatives [I I, 1 31. The "P-NMR chemical shift values of the decomposition products are about ca.…”