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Related Concept Videos

Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
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[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction

The Diels–Alder reaction is an example of a thermal pericyclic reaction between a conjugated diene and an alkene or alkyne, commonly referred to as a dienophile. The reaction involves a concerted movement of six π electrons, four from the diene and two from the dienophile, forming an unsaturated six-membered ring. As a result, these reactions are classified as [4+2] cycloadditions.
Diels–Alder Reaction: Characteristics of Dienes01:29

Diels–Alder Reaction: Characteristics of Dienes

The Diels–Alder reaction brings together a diene and a dienophile to form a six-membered ring. Both components have unique characteristics that influence the rate of the reaction.
Characteristics of the diene
Conformation
The simplest example of a diene is 1,3-butadiene, an acyclic conjugated π system. At room temperature, the molecule exists as a mixture of s-cis and s-trans conformers by virtue of rotation around the carbon–carbon single bond. Although the s-trans isomer is more stable, the...
Diels–Alder Reaction Forming Bridged Bicyclic Products: Stereochemistry01:29

Diels–Alder Reaction Forming Bridged Bicyclic Products: Stereochemistry

Diels–Alder reactions between cyclic dienes locked in an s-cis configuration and dienophiles yield bridged bicyclic products.
Halogens03:01

Halogens

Group 17 elements, known as halogens, are nonmetals. At room temperature, fluorine and chlorine are gases, bromine is a liquid, and iodine a solid. Astatine is a highly unstable radioactive element, so currently, most of its properties are unknown due to its short half-life. Tennessine is a synthetic element also predicted to be in this group.
Diels–Alder Reaction Forming Cyclic Products: Stereochemistry01:28

Diels–Alder Reaction Forming Cyclic Products: Stereochemistry

The Diels–Alder reaction is one of the robust methods for synthesizing unsaturated six-membered rings. The reaction involves a concerted cyclic movement of six π electrons: four π electrons from the diene and two π electrons from the dienophile.

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Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
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Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry

Published on: October 18, 2019

Diferrocen-yl(meth-yl)phenyl-silane.

Yu-Peng Liu1, Zong-Qi Li, Yong-Xia Tan

  • 1Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.

Acta Crystallographica. Section E, Structure Reports Online
|July 15, 2011
PubMed
Summary
This summary is machine-generated.

This study examines the structure of a novel iron complex, [Fe(2)(C(5)H(5))(2)(C(17)H(16)Si)]. The cyclopentadienyl rings are nearly eclipsed, indicating a specific molecular geometry for this organometallic compound.

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Area of Science:

  • Organometallic Chemistry
  • Crystallography

Background:

  • Understanding the structural nuances of iron complexes is crucial in catalysis and materials science.
  • The specific compound [Fe(2)(C(5)H(5))(2)(C(17)H(16)Si)] presents an interesting case for studying bonding and steric interactions.

Purpose of the Study:

  • To elucidate the precise three-dimensional structure of the title molecule, [Fe(2)(C(5)H(5))(2)(C(17)H(16)Si)].
  • To analyze the spatial arrangement and orientation of the cyclopentadienyl rings around the iron centers.

Main Methods:

  • Single-crystal X-ray diffraction was employed to determine the molecular structure.
  • Analysis of bond lengths, bond angles, and torsional angles provided insights into the geometry.

Main Results:

  • The cyclopentadienyl rings attached to the iron atoms were found to be in an approximately eclipsed conformation.
  • Small inter-planar angles of 1.8(2)° and 3.4(2)° were measured between the rings.
  • The iron atom exhibited a slight proximity towards the substituted cyclopentadienyl ring.

Conclusions:

  • The observed eclipsed conformation suggests specific electronic or steric factors governing the ligand arrangement.
  • The structural data provides a foundation for further investigations into the reactivity and properties of this iron complex.