Atmospheric reactions between creamy intermediates and unexpectedly proven fast water.

Krisey Intermediate (CIS) – The highly reactive species formed when ozone reacts with atmospheric alkenes play an important role in generating hydroxyl radicals (the “cleansing agents” of the atmosphere) and aerosols that affect climate and air quality. Syn-Ch3Choo is particularly important among these intermediates, accounting for 25%-79% of all CIs depending on the season.

Until now, scientists believed that Syn-Ch3choo had disappeared primarily due to self-abolization. However, the research published in Nature Chemistry was a team led by a professor. Yang Xueming, Zhang Donghui, Dong Wenrui and Fu Bina have uncovered an astonishing new pathway for the Dalian Chemical Physics Institute of Chemical Physics (DICP) at the Chinese Academy of Sciences.

Using advanced laser technology, researchers experimentally measured the reaction rate between Syn-Ch3Choo and water vapor, finding faster reaction times. To clarify the reasons behind this acceleration, we used a basic invariant divinity network approach to construct a high-precision full-dimensional (27D) potential energy surface and perform dynamic calculations of all-dimensionality.

Researchers have revealed a “roaming mechanism” driven by the powerful dipole-dipole interaction between molecules. Instead of following a direct minimum energy pathway, molecules “roam” each other, and there is a much more likely chance of a reaction. Under typical atmospheric conditions, this water-based reaction pathway is just as important as the self-integration process that is thought to be dominant.

This finding suggests that we must revise the traditional view that single molecule decomposition primarily controls the removal of syn-ch3choo. By revising understandings of key atmospheric processes, scientists may develop more accurate models of climate change and air quality. It also emphasizes the importance of combining high-precision experimental data with sophisticated all-dimensional simulations to accurately predict complex chemical reactions.

Beyond atmospheric science, the newly discovered “roaming mechanisms” can have a wide range of meanings and can affect fields such as combustion chemistry and hoshiko chemistry, with long-range interactions playing a major role in reaction dynamics.