Heteroaromatic‐Substituted Mono‐ and Bis(triimidosulfonates)

In this paper we present the syntheses and structures of the metal complexes [(THF) 2 Li{(N t Bu) 3 S(C 4 H 3 NMe)}] ( 1 ), [(tmeda)Li{(N t Bu) 3 S(C 4 H 3 S)}] ( 2 ), [(tmeda)Li{(N t Bu) 3 S(C 4 H 3 Se)}] ( 3 ), [(THF) 4 Li 2 {( t BuN) 3 S(SC 4 H 2 )S(N t Bu) 3 }] ( 4a ) and [(tmeda) 2 Li 2 {( t BuN) 3 S(SC 4 H 2 )S(N t Bu) 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 t BuN group is considerably shorter than in the metal‐coordinated t BuN 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)