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Updated: Jul 9, 2026

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

重いメイングループ水素の同位体形態: [Sn(Ar) H]2 (Ar = テルフェニル) システムの実験的および理論的研究

Eric Rivard1, Roland C Fischer, Robert Wolf

  • 1Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California, 95616, USA.

Journal of the American Chemical Society
|December 7, 2007
PubMed
まとめ

この研究では,対称ディマーと阻害された非対称ヒドリドを含む新しいチンII) ヒドリドが報告されています. ステリック・バルクは溶液中の構造に影響を及ぼし,リガンドの排斥が減少したため,非対称な形を好む.

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Electrophilic Addition to Alkynes: Halogenation

Introduction
Halogenation is another class of electrophilic addition reactions where a halogen molecule gets added across a π bond. In alkynes, the presence of two π bonds allows for the addition of two equivalents of halogens (bromine or chlorine). The addition of the first halogen molecule forms a trans-dihaloalkene as the major product and the cis isomer as the minor product. Subsequent addition of the second equivalent yields the tetrahalide.
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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 reactions,...
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Diazonium Group Substitution: –OH and –H

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