Study of the structure of benzene. Free Technical Library News

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Investigation of the structure of benzene

04.03.2020

Australian scientists from the ARC Center of Excellence in Exciton Science and UNSW in Sydney have solved a 90-year-old problem related to the fundamental structure of benzene.

Disputes about the structure of benzene have been going on since the 30s of the last century. The discussion about the structure of the molecule arises because, although it has few atomic components, it exists in a state that does not consist of four dimensions (like our "ordinary" world), but in 126 dimensions at the same time.

To prove this, experts have developed a new method - it is called Dynamic Voronoi Metropolis Sampling (DVMS). The scientists applied this method to benzene molecules and thus displayed their wave functions in all 126 dimensions. For this, a mathematical algorithm was used, which made it possible to divide the space into "tiles" corresponding to the permutation of the positions of the electrons.

“What we found is amazing. We found electrons with a so-called double spin bond, while electrons with a lower spin frequency remained single. This was not what we expected, but it could be good news for future technological applications. "Essentially, it reduces the energy of the molecule, making it more stable by getting electrons that repel each other, away from each other," said Timothy Schmidt, professor and author of the study.

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Bird flu too cold 01.07.2010

Why didn't the avian flu, which made a lot of noise, turn into the "plague of the XNUMXst century"? According to virologists from Imperial College London (England) and the University of North Carolina (USA), this virus is too cold in humans.

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Meanwhile, the temperature of the human nasal mucosa, where the influenza virus must initially multiply, rarely exceeds 33 degrees Celsius. To cause a pandemic, the virus must first mutate, adapt to such a low temperature.

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