PHOSPHORUS-NITROGEN CHEMISTRY .6. PREPARATION AND PROPERTIES OF THIOPHOSPHORUS TRI-N-METHYLIMIDE, P4S4N6(CH3)(6) (REPRINTED FROM INORG CHEM, VOL 2, PG 377, 1963)

Thiophosphorus tri-N-methylimide, P4S4N6(CH3)(6), was prepared in high yield by the reaction of elemental sulfur and solid P4N6(CH3)(6) at r oom temperature. Physical properties support a structure analogous to the cage structure for P4O6S4. Additional properties of the related co mpounds, P4N6(CH3)(6) and As4N6(CH3)(6), are reported. Comparison of p roton n.m.r. spectra and mass spectral cracking patterns substantiates a common structural basis for these molecules.