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Coordination Compounds and Nomenclature02:54

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In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
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For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
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Coordination nanosheets (CONASHs): strategies, structures and functions.

Ryota Sakamoto1, Kenji Takada, Tigmansu Pal

  • 1Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.

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Molecule-based nanosheets, particularly coordination nanosheets (CONASHs), offer diverse and tunable properties. This article details CONASH design, synthesis, and applications in materials science.

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Area of Science:

  • Materials Science
  • Chemistry
  • Physics

Background:

  • Nanosheets are 2D polymeric materials, typically inorganic, with significant research interest.
  • Molecule-based nanosheets offer greater structural diversity through selected constituents.
  • Coordination nanosheets (CONASHs) are a specific type of molecule-based nanosheet.

Purpose of the Study:

  • To define and describe coordination nanosheets (CONASHs).
  • To outline the design, synthesis, and characterization of CONASHs.
  • To explore the functionality and applications of CONASHs.

Main Methods:

  • Review of existing literature on CONASHs.
  • Description of synthetic procedures for CONASHs.
  • Analysis of characterization techniques for CONASHs.

Main Results:

  • CONASHs are defined as molecule-based nanosheets using organic ligands and metal ions/atoms.
  • Various examples of CONASHs are presented.
  • Functionalities and potential applications of CONASHs are explored.

Conclusions:

  • CONASHs represent a promising class of molecule-based nanosheets.
  • The field of CONASHs offers significant potential for future research and development.