Heteroaromatic‐Substituted Mono‐ and Bis(triimidosulfonates)

In this paper we present the syntheses and structures of the metal complexes [(THF)2Li{(NtBu)3S(C4H3NMe)}] (1), [(tmeda)Li{(NtBu)3S(C4H3S)}] (2), [(tmeda)Li{(NtBu)3S(C4H3Se)}] (3), [(THF)4Li2{(tBuN)3S(SC4H2)S(NtBu)3}] (4a) and [(tmeda)2Li2{(tBuN)3S(SC4H2)S(NtBu)3}] (4b). The lithium salts form non‐aggregated soluble molecules rather than infinite insoluble solid‐state lattices like their oxo analogues. The metals are N,N‐chelated rather than tripodally coordinated. Although the S−N bond to the one pendant spectator tBuN group is considerably shorter than in the metal‐coordinated tBuN groups, conjugation of the S−N bonds to the heteroaromatic rings could not be deduced unambiguously from the experimental structures. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)