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Explainer: The science of alkyl nitrites aka poppers
Sep 16, 2021 · Inhaling alkyl nitrites feels like becoming instantly drunk according to some users, although the effect lasts for only a few minutes. Also known as poppers, these chemicals have been taken recreationally since the 1960s. Although they are sold openly, usually in small brown bottles with enticing brand names such as ‘liquid gold’, their ...
Not just batteries: The chemistry of electric cars
Apr 24, 2022 · The internal combustion engine is not dead, but it may be beginning to die. One of the few bold steps taken at the November 2021 Cop26 climate conference in Glasgow, UK, was a declaration on phasing out sales of petrol and diesel cars by 2040 in all markets and by 2035 in leading ones: many European countries have set earlier dates, with the UK opting for 2030.
Quantum tunnelling explains why several supposedly stable …
Oct 4, 2024 · Over a quarter of hypothetical tricyclic benzene isomers that earlier computational studies had classed as stable are completely unsynthesisable due to quantum tunnelling. 1 That’s according to quantum chemistry calculations by Sindy Julieth Rodríguez and Sebastian Kozuch from Ben-Gurion University of the Negev in Israel. Benzene has been a hot topic of discussion among chemists since the ...
One-electron covalent bond between two carbons pushes limits of …
Oct 4, 2024 · Scientists in Japan have made a groundbreaking discovery: they have identified a covalent bond between two carbon atoms that share only a single electron. ‘This [study was driven] by a curiosity to know where the limits of chemical bonds are,’ says Takuya Shimajiri at the University of Tokyo. Bulky aryl groups helped to stabilise the one ...
The scale of the problem of replacing ‘forever chemicals’ PFAS
Oct 10, 2024 · Some packaging contains PFAS to repel grease, for example fast food wrappers and pizza boxes. One study published last year found PFAS chemicals in single-use paper, cardboard and plant-based moulded fibre food containers from 17 countries across Africa, Asia, Europe, North America, Latin America and the Caribbean. The research team identified fluorotelomer alcohols, precursors of PFAS ...
The Kuderna–Danish concentrator | Opinion | Chemistry World
Jan 7, 2021 · Persistent chattering. The Kuderna–Danish concentrator uses a Snyder fractionation column to condense residues of interest from a boiling solvent. In 1950, Kuderna and Danish began to develop a method to concentrate down …
Chemical industry news and analysis | Chemistry World
PFAS analysis: improving efficiency by using LC-MS systems with System Monitoring software. News and analysis from across the chemical sciences. The latest on pharmaceutical, agrichemical, fine and speciality chemical and petrochemical industries.
Predictions for the 2024 chemistry prize highlight growing …
Sep 20, 2024 · With the 2024 chemistry Nobel prize just two weeks away, anticipation is reaching fever pitch among aficionados of the award. Analysts and online commentators have proposed a number of contenders for the prize, with favourites including molecular dynamics, clean energy and three-dimensional protein structure prediction.
There’s something about boron | Feature | Chemistry World
Apr 8, 2019 · Small-molecule boron chemistry has really come into vogue in the last 10 or 15 years. But over the past decade, boron chemistry has been steadily subverted. A string of boron compounds in exotic bonding states have turned the element’s behaviour on its head. Boron can be coaxed into become a strong nucleophile, a Lewis base, an electron donor.