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In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
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The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It is a concept where two or more achiral molecules react to produce chiral products. A typical process is the reaction of an achiral ketone to generate a chiral alcohol. Here, the achiral reactant reacts with an achiral reducing agent, sodium borohydride, to generate an equimolar mixture of the chiral enantiomers of the product. For example, an...
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The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
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Isomerism in Complexes
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Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
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Constructing chiral polyoxometalate assemblies via supramolecular approaches.

Zexi Zhu1, Mingfeng Wei1, Bao Li1

  • 1State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China. libao@jlu.edu.cn.

Dalton Transactions (Cambridge, England : 2003)
|March 18, 2021
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Summary

This review explores generating and amplifying chirality in polyoxometalates (POMs) for solution-based functional materials. It covers chirality transfer and applications like photochromism and catalysis.

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Area of Science:

  • Inorganic Chemistry
  • Supramolecular Chemistry
  • Materials Science

Background:

  • Polyoxometalates (POMs) are versatile metal oxide clusters with growing applications.
  • Investigating POMs' solution properties, especially chirality, lags behind their synthesis and solid-state characterization.
  • Maintaining stable chiral states in POMs for functional applications remains a challenge.

Purpose of the Study:

  • To review the generation and transfer of chirality in discrete metal oxide clusters in solution.
  • To discuss chirality amplification in POM self-assemblies.
  • To highlight functional properties arising from induced chirality in solution systems.

Main Methods:

  • Focuses on induced chirality in solution systems, not crystalline solids.
  • Discusses supramolecular approaches for chirality transfer.
  • Examines self-assembly strategies for chirality amplification.

Main Results:

  • POMs can exhibit induced chirality in solution through various strategies.
  • Chirality transfer and amplification are achievable via supramolecular assembly.
  • Chiral POMs in solution show potential in photochromism, catalysis, and bioactivity.

Conclusions:

  • Addressing the challenge of stable chirality in POM solutions is crucial for advanced functional materials.
  • This review consolidates recent progress in solution-based chiral POMs.
  • Future research directions focus on exploiting chirality for novel material properties.