Theoretical and Experimental Studies of Six-Membered Selenium-Sulfur Nitrides Se(x)()S(4)(-)(x)()N(2) (x = 0-4). Preparation of S(4)N(2) and SeS(3)N(2) by the Reaction of Bis[bis(trimethylsilyl)amino]sulfane with Chalcogen Chlorides.

The reaction of [(Me(3)Si)(2)N](2)S with equimolar amounts of SCl(2) and S(2)Cl(2) produces S(4)N(2) in a good yield. The reaction of [(Me(3)Si)(2)N](2)S with a 3:1:1 mixture of S(2)Cl(2), Se(2)Cl(2), and SeCl(4) yields a dark brown-red insoluble material that was inferred to be mainly SSeSNSN on the basis of the elemental analysis, mass spectroscopy, vibrational analysis, and NMR spectroscopy. Attempts to prepare selenium-rich species resulted in the formation of elemental selenium or Se(3)N(2)Cl(2).