The term aromaticity is a basic, long-standing concept in chemistry that is well established for ring-shaped carbon compounds. Aromatic rings consisting solely of metal atoms were, however, heretofore unknown. The research team led by Prof. Dr Lutz Greb, a scientist at Heidelberg University's Institute of Inorganic Chemistry , recently succeeded in isolating such a metal ring and describing it in full.
The metal ring described by the Heidelberg University chemists is different. It is made up solely of metal atoms of elemental bismuth. The isolation and characterisation of this metal ring was made possible by a new approach of supramolecular stabilisation. Lutz Greb's research group arranged a negatively charged molecular shell around the positively charged metal ring that inhibits possible decomposition reactions.
Plant biochemists have discovered a new level of regulation in the biochemical 'machinery' that plants use to convert organic carbon derived from photosynthesis into a range of ring-shaped ...
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