The atmospheric reaction between screaming intermediaries and water quickly prove to be

Shouting intermediaries (CIS) – Very reactive species formed when ozone reacts with alkenes in the atmosphere – play a crucial role in the generation of hydroxyl radicals (“cleaning agents” of the atmosphere) and aerosols which have an impact on the climate and air quality. Synch₃Choo is particularly important among these intermediaries, representing 25% to 79% of all CIs depending on the season.

So far, scientists have believed that Syn-Ch₃Choo has mainly disappeared by self-composition. However, in a study published in Nature chemistryA team managed by teachers. Yang Xueming, Zhang Dongui, Dong Wenrui and Fu Bina of the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences discovered a surprising new way: Syn-Ch₃Choo’s reaction with atmospheric water vapor is about 100 times faster than expected by theoretical models.

By using advanced laser techniques, the researchers have experimentally measured the reaction speed between Synch₃Choo and water vapor, and discovered the faster reaction time. To discover the reason for this acceleration, they built a potential high -precision energy area (27D) using the approach of the fundamental invariant network and carried out dynamic calculations full dimension.

The researchers revealed a “roaming mechanism” caused by strong dipol-dipole interactions between the molecules. Instead of following a direct minimum energy path, the molecules “move” from each other, leading to a much higher probability of reaction. Under typical atmospheric conditions, this water-based reaction route is just as important as the self-composition process that has been supposed to dominate.

This observation suggests that conventional opinion that the unimolecular decomposition mainly governs the elimination of SYNC₃Choo must be revised. By revising understanding of key atmospheric processes, scientists can develop more precise models of climate change and air quality. It also highlights the importance of combining high -precision experimental data with advanced simulations in full dimension to predict complex chemical reactions.

Beyond atmospheric science, the newly discovered “roaming mechanism” could have large-scale implications, potentially affecting fields such as combustion chemistry and astrochemistry, where long-term interactions play a major role in the dynamics of reaction.