Hg4 Te8 (Te2 )4 ]8- : A Heavy Metal Porphyrinoid Embedded in a Lamellar Structure

Angewandte Chemie
C DonsbachS Dehnen

Abstract

The use of ionic liquids (Cn C1 Im)[BF4 ] with long alkyl chains (n=10, 12) in the ionothermal treatment of Na2 [HgTe2 ] led to lamellar crystal structures with molecular macrocyclic anions [Hg8 Te16 ]8- (1), the heaviest known topological relative of porphyrin. [Hg8 Te16 ]8- differs from porphyrin by the absence of an electronic π-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 (σ) 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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Citations

May 18, 2020·The Journal of Chemical Physics·Sree Ganesh BalasubramaniJason M Yu
Oct 14, 2020·Nature Communications·Armin R EulensteinStefanie Dehnen
Feb 11, 2021·ChemistryOpen·Sören ArltAlexander Villinger
Feb 17, 2021·Angewandte Chemie·Fabian DankertCarsten von Hänisch
Jan 31, 2020·Inorganic Chemistry·Fei WangXiao-Ying Huang

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