Chemical Bonding

A special issue of Chemistry (ISSN 2624-8549).

Deadline for manuscript submissions: closed (15 April 2022) | Viewed by 5567

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Department of Chemistry, University of Basel, Building 1096, Mattenstrasse 24a, CH-4058 Basel, Switzerland
Interests: light harvesting using inorganic coordination complexes as dyes in dye-sensitized solar cells (DSCs); development of emissive complexes for application in light-emitting electrochemical cells (LECs); water splitting and water oxidation catalysts;functional coordination polymers and networks
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Special Issue Information

Dear Colleagues,

Reaction chemistry can be described as the making and breaking of chemical bonds, emphasizing how the concept of bonding lies at the heart of the chemical sciences. This Special Issue is dedicated to chemical bonding in its broadest sense. Contributions will include modern concepts of bonding and some of the non-conventional types of bond that have been introduced to describe novel chemical species. Discussions about the deficiencies of bonding schemes are welcomed as are reports of compounds which challenge our understanding and appreciation of the bonding concept.

The issue will contain a number of invited articles, but we also issue a general invitation for the contribution of manuscripts on the topic of chemical bonding. Manuscripts will be rigorously refereed on the basis of scientific quality as well as relevance to the topic. If you are not certain that your proposed contribution will mesh with the theme of the Special Issue, please do not hesitate to contact the Editor.

Prof. Dr. Edwin Constable
Guest Editor

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Keywords

  • bonding
  • chemical interactions
  • covalent
  • non-covalent
  • ionic
  • weak-bonding
  • hydrogen-bonding
  • halogen-bonding
  • supramolecular

Published Papers (2 papers)

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27 pages, 6905 KiB  
Essay
The dn Number in Transition Metal Chemistry: Its Utility and Limitations
Chemistry 2023, 5(4), 2630-2656; https://doi.org/10.3390/chemistry5040170 - 21 Nov 2023
Viewed by 1012
Abstract
The dn number or configuration is a very useful parameter in transition metal chemistry because it conveys information about the expected properties of a d-block metal complex, including its shape, magnetism, thermodynamic stability, kinetic lability, and spectroscopic properties. The dn number [...] Read more.
The dn number or configuration is a very useful parameter in transition metal chemistry because it conveys information about the expected properties of a d-block metal complex, including its shape, magnetism, thermodynamic stability, kinetic lability, and spectroscopic properties. The dn number can be determined from either the oxidation state (OS) or valence number (VN) of the metal centre, and since, in most cases, these are numerically equal, the derived dn value is the same. However, examples are discussed where the OS and VN are not equal, which results in unavoidable ambiguities in dn values. Following a discussion of these examples, a revised definition of dn is proposed based on the occupation of the frontier molecular orbitals of the complex. Full article
(This article belongs to the Special Issue Chemical Bonding)
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24 pages, 5705 KiB  
Essay
Hypervalence: A Useful Concept or One That Should Be Gracefully Retired?
Chemistry 2022, 4(4), 1226-1249; https://doi.org/10.3390/chemistry4040082 - 08 Oct 2022
Cited by 6 | Viewed by 3965
Abstract
In this essay the origins of the term hypervalence and its application in p-block element chemistry are considered and it is argued that the term should now be consigned to the graveyard of concepts that no longer afford any discernible value or insight, [...] Read more.
In this essay the origins of the term hypervalence and its application in p-block element chemistry are considered and it is argued that the term should now be consigned to the graveyard of concepts that no longer afford any discernible value or insight, certainly from an educational perspective. In contrast, the educational merits of the octet rule are also examined where it is concluded that this rule does have significant pedagogical value, albeit mostly within the ambit of introductory level explanations. For a few of the chosen exemplar compounds, a selection of orbital-based analyses, at different levels of sophistication, are also considered, and their values appraised together with a brief survey of some of the more general computational studies which have been employed in relation to this topic. Full article
(This article belongs to the Special Issue Chemical Bonding)
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