Large Sulfur-Nitrogen Heterocycles: Preparation of the Sulfur Imides S_nNH (n = 8, 9, 11) and Structures of S_8NH and S_9NH

摘要

A considerable number of sulfur homocycles S_n has been prepared as pure materials (n = 6- 13, 15, 18, 20) and most of these have been characterized by X-ray crystal structure analyses. In addition, the structures of several compounds with S_nC frameworks are known (with n = 2,5 - 8,11 ). In contrast, of the conceivable compounds with an S_nN framework, only that with n =7 is known to date, Heptasulfur imide S-NH like S_8 forms a crown-shaped ring, of which quite a number of organic derivatives S-NRhave been prepared.