Novel Crown Ethers with a Trithiadiazapentalene–Trithiotriuret Redox System


  • Financial support by the Akademie der Naturforscher Leopoldina (H. G.) and by the Fonds der Chemischen Industrie (H. G. and K-G.) is acknowledged. The authors wish to thank Prof. Dr. M. T. Reetz (MPI für Kohlenforschung Mühlheim) for help rendered during the transport experiments and Prof. Dr. H. Schneider (MPI für biophysikalische Chemie Göttingen) for support with the stability constant measurements. The graduate scholarship from Studienstiftung des deutschen Volkes (to M. M.) is gratefully appreciated.

  • Dedicated to Proffesor Leonard F. Lindoy on the occasion of his 60th birthday


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The differentiated recognition of Ag1 and Hg11 can be achieved with the pentaleno crown ethers 1 by variation of the cavity through the reversible trithia-diazapentalene–trithiotriuret redox system (1⇌2). These compounds were obtained in a one-pot reaction of trithiadiazapentalenes with diamino polyethers of different chain lengths. n = 1–3, R = CH3, CH2C6H5.