Mixed Sulfur-Nitrogen-Selenium Compounds

Se4N4 has been prepared in a new phase isostructural with S4N4. Its structure is reported together with the synthesis of two mixed sulfur-selenium-nitrogen compounds (SSe2N2+)2(X-)2 (X=CI, Br). The proposed structure of the latter compounds is based on mass spectroscopic, IR, and ESR data. The existence of these mixed sulfur-nitrogen-selenium compounds is of particular significance in view of the attempts to prepare (SeN)x, the analogue of superconducting (SN)x. © 1978, American Chemical Society. All rights reserved.