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Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

1.2K
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
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Reactions of Acid Anhydrides01:19

Reactions of Acid Anhydrides

4.5K
The reactions of acid anhydrides are analogous to the reactions of acid chlorides and proceed via a nucleophilic acyl substitution. They only differ in the identity of the leaving group. During an acid chloride reaction, the leaving group is a chloride ion, and the by-product is hydrochloric acid. However, in an acid anhydride reaction, the leaving group is a carboxylate ion, and the by-product is a carboxylic acid.
4.5K
Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride01:26

Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride

2.0K
Radical substitution reactions can be used to remove functional groups from molecules. The hydrogenolysis of alkyl halides is one such reaction, where the weak Sn–H bond in tributyltin hydride reacts with alkyl halides to form alkanes. Here, the reagent Bu3SnH yields tributyltin halide as a byproduct.
The bonds formed in this reaction are stronger than the bonds broken, making it energetically favorable. The reaction follows a radical chain mechanism similar to radical halogenation...
2.0K
Alkyl Halides02:45

Alkyl Halides

17.9K
Structural Properties
Alkyl halides are halogen-substituted alkanes wherein one or more hydrogen atoms of an alkane is replaced by a halogen atom such as fluorine, chlorine, bromine, or iodine. The carbon atom in an alkyl halide is bonded to the halogen atom, which is sp3-hybridized and exhibits a tetrahedral shape.
Unlike alkyl halides, compounds in which a halogen atom is bonded to an sp2 -hybridized carbon atom of a carbon-carbon double bond (C=C) are called vinyl halides. Whereas aryl...
17.9K
Molecular Orbital Theory II03:51

Molecular Orbital Theory II

21.9K
Molecular Orbital Energy Diagrams
21.9K
Acid Halides to Alcohols: LiAlH4 Reduction01:19

Acid Halides to Alcohols: LiAlH4 Reduction

3.3K
Acid halides are reduced to alcohols in the presence of a strong reducing agent like lithium aluminum hydride.
The mechanism proceeds in three steps. First, the nucleophilic hydride ion attacks the carbonyl carbon of the acid halide to form a tetrahedral intermediate. Next, the carbonyl group is re-formed, and the halide ion departs as a leaving group, generating an aldehyde. A second nucleophilic attack by the hydride yields an alkoxide ion, which, upon protonation, gives a primary alcohol as...
3.3K

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Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
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Molecular Main Group Metal Hydrides.

Matthew M D Roy1, Alvaro A Omaña2, Andrew S S Wilson3

  • 1Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, United Kingdom.

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|August 27, 2021
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This review details advances in main group metal hydrides, focusing on their synthesis, bonding, reactivity, and catalysis applications. It highlights recent research in this dynamic field since 2001.

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

  • Inorganic Chemistry
  • Organometallic Chemistry
  • Catalysis

Background:

  • Main group metal hydrides are crucial compounds with diverse applications.
  • Recent years have seen significant progress in their synthesis and understanding.
  • Their role in catalysis is a rapidly developing area.

Purpose of the Study:

  • To review recent advancements in the synthesis, bonding, and reactivity of molecular main group metal hydrides.
  • To highlight the growing importance of these hydrides in main group element-mediated catalysis.
  • To provide a comprehensive overview of research published since 2001.

Main Methods:

  • Literature review of scientific publications.
  • Analysis of synthetic methodologies for main group metal hydrides.
  • Examination of bonding characteristics and reactivity patterns.
  • Survey of catalytic applications mediated by main group elements.

Main Results:

  • Significant progress in the synthesis of novel main group metal hydrides.
  • Elucidation of versatile bonding modes and reactivity profiles.
  • Demonstration of effective main group element-mediated catalytic transformations.
  • Identification of key trends and emerging research directions.

Conclusions:

  • Main group metal hydrides are versatile building blocks with expanding applications.
  • Their utility in catalysis is a key area for future research and development.
  • Continued exploration promises further innovation in main group chemistry.