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Pubblicato il 12/02/2014Read time: 1 min

On Tuesday 18h February, at Assaggi bookstore in Rome, the science café "Migrant researchers" will be held.

Travelling and changing the place where to work is part of the life of a researcher. Which are the most favourite destinations and why? When such a mobility exceeds a certain amount of time, it becomes migration. Our country almost exclusively deals with exiting flows and whilst our researchers may reach high level positions in other countries, in our research centers it is difficult to see scientists from abroad. Mobility must be forerun, accompanied and followed by well defined political plans. What are the research policies in Italy, in Europe and in the rest of the world? And what about the returns in terms of innovation and, more generally, of social wealth?

These topics will be debated with Sveva Avveduto, sociologist, and Maria Carolina Brandi, geographer.

Question time with Pietro Greco, science journalist.

The event will be transmitted in live streaming on Scienceonthenet and on the Forma Scienza YouTube channel.

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Discovered a New Carbon-Carbon Chemical Bond

di Chiara D'Errico

Pubblicato il 16/10/2024

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

Chemistry

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.