期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 28, 页码 8770-8774出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201803233
关键词
chalcogenidometalates; dimensional reduction; inorganic macrocylces; ionothermal synthesis; ring currents
资金
- Deutsche Forschungsgemeinschaft [SPP 1708, SFB 1176, Q5]
- Academy of Finland [275845]
The use of ionic liquids (C(n)C(1)Im)[BF4] with long alkyl chains (n=10,12) in the ionothermal treatment of Na-2[HgTe2] led to lamellar crystal structures with molecular macrocyclic anions [Hg8Te16](8-) (1), the heaviest known topological relative of porphyrin. [Hg8Te16](8-) differs from porphyrin by the absence of an electronic pi-system, which prevents a global aromaticity. Quantum chemical studies reveal instead small ring currents in the pyrrole-type five-membered rings that indicate weak local (sigma) aromaticity. As a result of their lamellar nature, the compounds are promising candidates for the formation of sheets containing chalcogenidometalate anions.
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