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Related Concept Videos

Heterogeneous Catalysis01:22

Heterogeneous Catalysis

Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...
Introduction to Mechanisms of Enzyme Catalysis01:13

Introduction to Mechanisms of Enzyme Catalysis

For many years, scientists thought that enzyme-substrate binding took place in a simple "lock-and-key" fashion. This model stated that the enzyme and substrate fit together perfectly in one instantaneous step. However, current research supports a more refined view scientists call induced fit. The induced-fit model expands upon the lock-and-key model by describing a more dynamic interaction between enzyme and substrate. As the enzyme and substrate come together, their interaction causes a mild...
Introduction to Mechanisms of Enzyme Catalysis01:13

Introduction to Mechanisms of Enzyme Catalysis

For many years, scientists thought that enzyme-substrate binding took place in a simple "lock-and-key" fashion. This model stated that the enzyme and substrate fit together perfectly in one instantaneous step. However, current research supports a more refined view scientists call induced fit. The induced-fit model expands upon the lock-and-key model by describing a more dynamic interaction between enzyme and substrate. As the enzyme and substrate come together, their interaction causes a mild...
Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
Catalysis01:27

Catalysis

Catalysis influences the rate of chemical reactions by providing an alternative reaction pathway with lower activation energy. A catalyst speeds up a reaction, but it is not consumed during the process. The fundamental principle of catalysis is the ability of a catalyst to alter the reaction mechanism, often introducing a more efficient pathway than the uncatalyzed process.In a catalyzed reaction, the catalyst participates directly in the reaction mechanism. It interacts with reactants to form...

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Reliable Mechanochemistry: Protocols for Reproducible Outcomes of Neat and Liquid Assisted Ball-mill Grinding Experiments
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Mechanochemistry Meets Catalysis: Metal Complexes for Greener Organic Transformations.

Sourav Behera1, Francesco Basoccu1, Andrea Porcheddu1

  • 1Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, Monserrato, Italy.

Angewandte Chemie (International Ed. in English)
|May 23, 2026
PubMed
Summary

Mechanochemistry uses mechanical energy to transform transition-metal catalysts, offering greener and more efficient organic synthesis. This approach enables unique catalytic reactions previously inaccessible through conventional methods.

Keywords:
mechanocatalysismechanochemistrymechano‐redoxtransition metal complexes

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Area of Science:

  • Chemistry
  • Materials Science
  • Green Chemistry

Background:

  • Mechanochemistry is emerging as a powerful tool in catalysis.
  • Mechanical energy can influence catalyst properties and reactivity.
  • Traditional solution-phase catalysis faces limitations in efficiency and accessibility.

Purpose of the Study:

  • To review the mechanochemical synthesis of transition-metal catalysts.
  • To examine their application in catalytic organic transformations.
  • To assess the potential of mechanocatalysis for next-generation green chemistry.

Main Methods:

  • Intense mixing, liquid-assisted grinding (LAG), and rheological control.
  • Mechanochemical synthesis of transition-metal complexes.
  • Deployment in catalytic organic transformations using various metals.

Main Results:

  • Mechanocatalysis enables catalyst formulation, activation, and selectivity.
  • Achieved high enantioselectivities (up to 99% ee) and turnover frequencies (>100 h⁻¹).
  • Demonstrated rapid reactions (minutes) and access to novel reactivity regimes.

Conclusions:

  • Mechanocatalysis streamlines catalyst preparation and reduces reliance on inert atmospheres.
  • It offers greener alternatives and distinct reactivity compared to solution-phase methods.
  • Scalable technologies like TSE and RAM position mechanocatalysis for future green catalysis.