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Related Concept Videos

Metal-Ligand Bonds02:51

Metal-Ligand Bonds

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.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
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...
Structural Isomerism02:34

Structural Isomerism

Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...
Complexation Equilibria: The Chelate Effect01:19

Complexation Equilibria: The Chelate Effect

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...
Hydroboration-Oxidation of Alkenes03:08

Hydroboration-Oxidation of Alkenes

In addition to the oxymercuration–demercuration method, which converts the alkenes to alcohols with Markovnikov orientation, a complementary hydroboration-oxidation method yields the anti-Markovnikov product. The hydroboration reaction, discovered in 1959 by H.C. Brown, involves the addition of a B–H bond of borane to an alkene giving an organoborane intermediate. The oxidation of this intermediate with basic hydrogen peroxide forms an alcohol.
Complexation Equilibria: Factors Influencing Stability of Complexes01:09

Complexation Equilibria: Factors Influencing Stability of Complexes

In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...

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Synthesis of Triazole and Tetrazole-Functionalized Zr-Based Metal-Organic Frameworks Through Post-Synthetic Ligand Exchange
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Borido complexes via intermetallic metalloborylene transfer.

Holger Braunschweig1, Rian D Dewhurst, Katharina Kraft

  • 1Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Würzburg, Germany. h.braunschweig@mail.uni-wuerzburg.de

Chemical Communications (Cambridge, England)
|August 3, 2011
PubMed
Summary
This summary is machine-generated.

New borido complexes were synthesized using intermetallic borylene transfer. This method successfully transferred the borylene moiety from a known iron-chromium complex to other transition metals, yielding novel compounds.

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Area of Science:

  • Organometallic Chemistry
  • Inorganic Chemistry
  • Materials Science

Background:

  • Borylene complexes are versatile intermediates in inorganic synthesis.
  • Intermetallic borylene transfer offers a novel route to complex boron-containing compounds.

Purpose of the Study:

  • To explore the utility of intermetallic borylene transfer for synthesizing new borido complexes.
  • To characterize novel transition metal borylene and borido compounds.

Main Methods:

  • Utilized a known iron-chromium borylene complex as a precursor.
  • Performed borylene transfer reactions to various transition metal fragments.
  • Characterized the resulting compounds using solution-state techniques and X-ray crystallography.

Main Results:

  • Successfully transferred the borylene moiety from the iron-chromium precursor.
  • Synthesized and fully characterized two new borido complexes.
  • Confirmed the structures of the new compounds through X-ray diffraction.

Conclusions:

  • Intermetallic borylene transfer is an effective method for constructing novel borido complexes.
  • The characterized compounds expand the scope of known borylene and borido chemistry.
  • This approach provides access to new molecular architectures with potential applications in catalysis or materials science.