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Related Concept Videos

Covalent Bonding and Lewis Structures02:46

Covalent Bonding and Lewis Structures

Compared to ionic bonds, which results from the transfer of electrons between metallic and nonmetallic atoms, covalent bonds result from the mutual attraction of atoms for a “shared” pair of electrons.
Valence Bond Theory02:45

Valence Bond Theory

Overview of Valence Bond Theory
Coordination Compounds and Nomenclature02:54

Coordination Compounds and Nomenclature

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...
Valence Bond Theory02:42

Valence Bond Theory

Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
Chemical Bonds02:40

Chemical Bonds


Atoms participate in a chemical bond formation to acquire a completed valence-shell electron configuration similar to that of the noble gas nearest to it in atomic number. Ionic, covalent, and metallic bonds are some of the important types of chemical bonds. Bond energy and bond length determine the strength of a chemical bond.
Types of Chemical Bonds
An ionic bond is formed due to electrostatic attraction between cations and anions. Often, the ions are formed by the transfer of electrons from...
¹H NMR: Long-Range Coupling01:27

¹H NMR: Long-Range Coupling

The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene π orbitals.

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Related Experiment Video

Updated: Jun 7, 2026

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
06:35

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates

Published on: February 15, 2016

Unique homonuclear multiple bonding in main group compounds.

Yuzhong Wang1, Gregory H Robinson

  • 1Department of Chemistry, The University of Georgia, Athens, GA 30602-2556, USA.

Chemical Communications (Cambridge, England)
|August 27, 2009
PubMed
Summary
This summary is machine-generated.

Recent decades show major advances in main group element chemistry, focusing on compounds with multiple bonds between identical atoms. This review highlights unique structures and bonding in these fascinating molecules.

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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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Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex

Published on: July 27, 2022

Area of Science:

  • Inorganic Chemistry
  • Main Group Chemistry
  • Materials Science

Background:

  • The last 30 years have seen substantial advancements in the synthesis and characterization of main group compounds.
  • Homonuclear multiple bonding in main group elements (Groups 13, 14, 15) presents unique chemical challenges and opportunities.
  • Understanding these bonds is crucial for developing new materials and catalysts.

Purpose of the Study:

  • To provide a comprehensive overview of the progress in main group chemistry concerning homonuclear multiple bonds.
  • To highlight the diverse structural and bonding motifs observed in these compounds.
  • To showcase both well-established and newly discovered molecules in this field.

Main Methods:

  • Literature review and analysis of published research.
  • Focus on structural data and spectroscopic evidence.
  • Discussion of theoretical calculations supporting bonding models.

Main Results:

  • Identification of unique bonding patterns, including multiple bonds between heavier main group elements.
  • Characterization of novel molecular architectures and coordination complexes.
  • Examples of compounds exhibiting unusual reactivity and properties.

Conclusions:

  • Main group homonuclear multiple bonds are more prevalent and diverse than previously thought.
  • These compounds offer a rich platform for fundamental chemical research and potential applications.
  • Continued exploration promises further exciting discoveries in main group chemistry.