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Luca Carra intervista Massimo Florio, dell'Università degli studi di Milano, che insieme ai suoi colleghi ha prodotto un report per ricostruire la mappa degli investimenti pubblici e privati sulla ricerca e sviluppo dei vaccini su richiesta del Parlamento europeo. Il Comitato speciale del Parlamento UE sul Covid ha approvato il 13 giugno delle raccomandazioni per migliorare la risposta alle minacce pandemiche.
A group of researchers from Hokkaido University has provided the first experimental evidence of the existence of a new type of chemical bond: the single-electron covalent bond, theorized by Linus Pauling in 1931 but never verified until now. Using derivatives of hexaarylethane (HPE), the scientists were able to stabilize this unusual bond between two carbon atoms and study it with spectroscopic techniques and X-ray diffraction. This discovery opens new perspectives in understanding bond chemistry and could lead to the development of new materials with innovative applications.
In the cover image: study of the sigma bond with X-ray diffraction. Credits: Yusuke Ishigaki
After nearly a year of review, on September 25, a study was published in Nature that has sparked a lot of discussion, especially among chemists. A group of researchers from Hokkaido University synthesized a molecule that experimentally demonstrated the existence of a new type of chemical bond, something that does not happen very often.
