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Understanding Ball Milling Mechanochemical Processes with DFT Calculations and Microkinetic Modeling.

Bruna S PladevallAdiran de AguirreFeliu Maseras
Published in: ChemSusChem (2021)
Mechanochemistry is an emerging field with many potential applications in sustainable chemistry. But despite the growing interest in the field, its underlying mechanistic foundations are not fully understood yet. This work presents the application of computational tools, such as DFT calculations in continuum and microkinetic modeling, to the analysis of mechanically activated procedures. Two reactions reported in previous experimental publications were studied: (i) a series of Diels-Alder reactions and (ii) the synthesis of sulfonylguanidines. Calculations succeed in reproducing experimentally reported reaction times. The procedures were mostly standard, coupled with some sensitive choices in terms of starting concentrations and dielectric constant. This means that these particular reactions accelerated by ball milling followed the same mechanism as the equivalent reactions in solution. The implications of this result on the general picture of mechanochemical processes are discussed.
Keyphrases
  • density functional theory
  • molecular dynamics
  • molecular dynamics simulations
  • molecular docking
  • monte carlo
  • risk assessment
  • climate change
  • drug discovery