Isolation and Reactivity of an Antiaromatic s-Block Metal Compound
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION(2021)
摘要
The concepts of aromaticity and antiaromaticity have a long history, and countless demonstrations of these phenomena have been made with molecules based on elements from the p, d, and f blocks of the periodic table. In contrast, the limited oxidation-state flexibility of the s-block metals has long stood in the way of their participation in sophisticated pi-bonding arrangements, and truly antiaromatic systems containing s-block metals are altogether absent or remain poorly defined. Using spectroscopic, structural, and computational techniques, we present herein the synthesis and authentication of a heterocyclic compound containing the alkaline earth metal beryllium that exhibits significant antiaromaticity, and detail its chemical reduction and Lewis-base-coordination chemistry.
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关键词
antiaromaticity,aromaticity,beryllium,heterocycles,s-block metals
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